Company lists · Data refreshed September 2026
Top 25 Constitutional law firms based in Washington, United States
RevenueBase identified 84 company matches for constitutional law firms associated with Washington, United States as of September 2026 and tracks 3,572 professional contacts across them, including 2,267 with verified work emails and 1,992 with mobile numbers. Across the United States, New York is the largest hub for this category (152 companies); Washington follows with 94.
This list covers company matches for constitutional law firms associated with Washington, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 8, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest constitutional law firms based in Washington, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,790 contacts → | ||||
Exact match “Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 2 | 576 contacts → | ||||
Exact match “Founded in 1983, Wiley is a dominant presence in the nation’s capital.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 3 | 230 contacts → | ||||
Exact match “Keller and Heckman, founded in 1962, has a broad practice in the areas of regulatory law, public policy, and litigation, serving both domestic and international clients.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 4 | 211 contacts → | ||||
Exact match “Kellogg Hansen works in complex trial and appellate litigation.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 5 | 56 contacts → | ||||
Exact match “Relman Colfax PLLC is a national civil rights law firm, with a litigation practice focused on combating discrimination and obtaining equity, including in the areas of housing…” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 6 | 44 contacts → | ||||
Exact match “Berliner Corcoran & Rowe LLP is a boutique law firm focused on international law, export controls/sanctions/customs/OFAC/CFIUS, litigation, corporate and intellectual property law.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 7 | 42 contacts → | ||||
Exact match “The lawyers of Katz Banks Kumin are nationally recognized leaders in the areas of whistleblower law, discrimination and sexual harassment law, wage and hour law, employment law…” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 8 | 38 contacts → | ||||
Exact match “Cooper & Kirk is a litigation boutique specializing in commercial, regulatory, and constitutional disputes in both federal and state courts.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 9 | 33 contacts → | ||||
Exact match “Federal Practice Group is a nationally recognized law firm specializing in federal employment, military law, government contracts, security clearance, litigation, and more.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 10 | 28 contacts → | ||||
Exact match “Since its founding in 1971, DWG & P, has provided a broad range of counseling, regulatory, litigation and legislative services to clients in every region of the country.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 11 | 26 contacts → | ||||
Exact match “We practice advocacy-and only advocacy.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 12 | 26 contacts → | ||||
Exact match “Trister, Ross, Schadler & Gold, PLLC combines personalized client service with decades of broad experience and specialized legal expertise.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 13 | 26 contacts → | ||||
Exact match “Stein Mitchell Beato & Missner LLP is a law firm located in Washington, D.C.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 14 | 22 contacts → | ||||
Exact match “The Constitutional Accountability Center (CAC) is dedicated to fulfilling the inherently progressive promise of the Constitution’s text, history, and values.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 15 | 20 contacts → | ||||
Exact match “Schaerr | Jaffe LLP is a Washington D.C.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 16 | 18 contacts → | ||||
Exact match “Shaw Bransford & Roth, PC (SBR) provides superior legal services to and protects the rights of federal employees nationwide.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 17 | 18 contacts → | ||||
Exact match “Silver, Freedman, Taff & Tiernan LLP, is a preeminent legal services provider based in Washington, DC.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 18 | 15 contacts → | ||||
Exact match “Murphy Anderson is a Washington-based law firm representing workers and unions.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 19 | 15 contacts → | ||||
Exact match “The National Security Law Firm is a full-service, nationwide law firm highly specialized in representing current and former servicemembers and federal employees in matters…” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 20 | 15 contacts → | ||||
Exact match “Terris, Pravlik & Millian, LLP was founded by Bruce J.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 21 | 13 contacts → | ||||
Exact match “Boyden Gray PLLC is a boutique litigation and public policy firm, continuing C.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 22 | 12 contacts → | ||||
Exact match “WATKINSON MILLER PLLC is a law practice company based out of 1100 New Jersey Ave SE Suite 910, WASHINGTON, District of Columbia, United States.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 23 | 10 contacts → | ||||
Exact match “The Center for Individual Rights is a public interest law firm specializing in free speech issues and dedicated to the defense of individual rights.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 24 | 10 contacts → | ||||
Exact match “Workers Have Rights, We Know How to Protect Them.” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
| 25 | 9 contacts → | ||||
Exact match “For more than forty years, we at Harmon, Curran, Spielberg + Eisenberg, LLP, have served the legal needs of individuals and organizations to help them advance social, economic and…” Recorded in the RevenueBase company graph · Sep 8, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “constitutional law firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 84 constitutional law firms based in Washington, United States
See the full list, filter by size, metro and specialty, and access 2,267 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Constitutional law firms based in Washington, United States at a glance
As of Sep 8, 2026Companies by employee count
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 10.0dCompany record updated
Median 50.0dHow this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with Washington, United States whose business descriptions match “constitutional law firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 2,267 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 8, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Constitutional law firms by metro in the United States
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “constitutional law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many constitutional law firms are there based in Washington, United States?
RevenueBase identified 84 company matches for constitutional law firms associated with Washington, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Venable LLP tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United States has the most constitutional law firms?
New York leads the United States with 152 company records, followed by Washington (94) and Los Angeles (72).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,267 professional contacts with verified work emails tracked across these 84 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 8, 2026.
Ready to reach these companies? Verified emails and direct dials for all 84 constitutional law firms based in Washington, United States. Start with a free account, no credit card.
Download this list →Related lists
Constitutional law firms by geography
- Constitutional law firms based in the United States
- Constitutional law firms based in Brazil
- Constitutional law firms based in Spain
- Constitutional law firms based in Italy
- Constitutional law firms based in France
- Constitutional law firms based in Germany
- Constitutional law firms based in Mexico
- Constitutional law firms based in Canada
- Constitutional law firms based in the Netherlands
- Constitutional law firms based in Poland
- Constitutional law firms based in Argentina
- Constitutional law firms based in the United Kingdom
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
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- Lists A-Z
- New lists
- Constitutional law firms based in the United States
- Constitutional law firms based in Brazil
- Constitutional law firms based in Spain
- Constitutional law firms based in Italy
- Constitutional law firms based in France
- Constitutional law firms based in Germany
Company intelligence · public preview
Top 25 constitutional law firms based in Washington, United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 84 matching company records for constitutional law firms based in Washington, United States, with 3,572 tracked contacts and 2,267 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 8, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 constitutional law firms based in Washington, United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Venable LLPvenable.comHQ: Washington, DC, United StatesReported employees: 1,001-5,000 | Washington, DC, United States | 1,001-5,000 | Exact match | 1,790 contacts → |
“Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Wiley Rein LLPwiley.lawHQ: Washington, DC, United StatesReported employees: 501-1,000 | Washington, DC, United States | 501-1,000 | Exact match | 576 contacts → |
“Founded in 1983, Wiley is a dominant presence in the nation’s capital.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Keller And Heckman LLPkhlaw.comHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 230 contacts → |
“Keller and Heckman, founded in 1962, has a broad practice in the areas of regulatory law, public policy, and litigation, serving both domestic and international clients.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Kellogg, Hansen, Todd, Figel & Frederick Pllckellogghansen.comHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 211 contacts → |
“Kellogg Hansen works in complex trial and appellate litigation.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Relman Colfax Pllcrelmanlaw.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 56 contacts → |
“Relman Colfax PLLC is a national civil rights law firm, with a litigation practice focused on combating discrimination and obtaining equity, including in the areas of housing…” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 44 contacts → |
“Berliner Corcoran & Rowe LLP is a boutique law firm focused on international law, export controls/sanctions/customs/OFAC/CFIUS, litigation, corporate and intellectual property law.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Katz Banks Kumin LLPkatzbanks.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 42 contacts → |
“The lawyers of Katz Banks Kumin are nationally recognized leaders in the areas of whistleblower law, discrimination and sexual harassment law, wage and hour law, employment law…” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Cooper & Kirk Pllccooperkirk.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 38 contacts → |
“Cooper & Kirk is a litigation boutique specializing in commercial, regulatory, and constitutional disputes in both federal and state courts.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Federal Practice Group, LLPfedpractice.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 33 contacts → |
“Federal Practice Group is a nationally recognized law firm specializing in federal employment, military law, government contracts, security clearance, litigation, and more.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 28 contacts → |
“Since its founding in 1971, DWG & P, has provided a broad range of counseling, regulatory, litigation and legislative services to clients in every region of the country.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Cuneo, Gilbert & Laduca, LLPcuneolaw.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 26 contacts → |
“We practice advocacy-and only advocacy.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Trister, Ross, Schadler & Gold, Pllctristerross.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 26 contacts → |
“Trister, Ross, Schadler & Gold, PLLC combines personalized client service with decades of broad experience and specialized legal expertise.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Stein Mitchell Beato & Missner LLPsteinmitchell.comHQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 26 contacts → |
“Stein Mitchell Beato & Missner LLP is a law firm located in Washington, D.C.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Constitutional Accountability Center CACtheusconstitution.orgHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 22 contacts → |
“The Constitutional Accountability Center (CAC) is dedicated to fulfilling the inherently progressive promise of the Constitution’s text, history, and values.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Schaerr Jaffe LLPschaerr-jaffe.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 20 contacts → |
“Schaerr | Jaffe LLP is a Washington D.C.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Shaw Bransford & Roth, P.Cshawbransford.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 18 contacts → |
“Shaw Bransford & Roth, PC (SBR) provides superior legal services to and protects the rights of federal employees nationwide.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Silver, Freedman, Taff & Tiernan LLPsfttlaw.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 18 contacts → |
“Silver, Freedman, Taff & Tiernan LLP, is a preeminent legal services provider based in Washington, DC.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Murphy Anderson Pllcmurphypllc.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 15 contacts → |
“Murphy Anderson is a Washington-based law firm representing workers and unions.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  National Security LAW Firmnationalsecuritylawfirm.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 15 contacts → |
“The National Security Law Firm is a full-service, nationwide law firm highly specialized in representing current and former servicemembers and federal employees in matters…” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Terris, Pravlik & Millian, LLPtpmlaw.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 15 contacts → |
“Terris, Pravlik & Millian, LLP was founded by Bruce J.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Boyden Gray Pllcboydengray.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 13 contacts → |
“Boyden Gray PLLC is a boutique litigation and public policy firm, continuing C.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Watkinson Miller Pllcwatkinsonmiller.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 12 contacts → |
“WATKINSON MILLER PLLC is a law practice company based out of 1100 New Jersey Ave SE Suite 910, WASHINGTON, District of Columbia, United States.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Center For Individual Rightscir-usa.orgHQ: Washington, DC, United StatesReported employees: 1-10 | Washington, DC, United States | 1-10 | Exact match | 10 contacts → |
“The Center for Individual Rights is a public interest law firm specializing in free speech issues and dedicated to the defense of individual rights.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Bernabei & Kabat, Pllcbernabeipllc.comHQ: Washington, DC, United StatesReported employees: 1-10 | Washington, DC, United States | 1-10 | Exact match | 10 contacts → |
“Workers Have Rights, We Know How to Protect Them.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Harmon, Curran, Spielberg & Eisenberg, LLPharmoncurran.comHQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 9 contacts → |
“For more than forty years, we at Harmon, Curran, Spielberg + Eisenberg, LLP, have served the legal needs of individuals and organizations to help them advance social, economic and…” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 84 company matches
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Constitutional law firms: dataset insights
September 8, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
84 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 10.0dCompany record updated
Median 50.0dHow this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 8, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Constitutional law firms by metro in the United States
Questions about this company list
What does Exact match mean for constitutional law firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many constitutional law firms did RevenueBase find based in Washington, United States?
The saved snapshot records 84 matching company records, 3,572 tracked contacts and 2,267 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 8, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Constitutional law firms by geography
- Constitutional law firms based in the United States
- Constitutional law firms based in Brazil
- Constitutional law firms based in Spain
- Constitutional law firms based in Italy
- Constitutional law firms based in France
- Constitutional law firms based in Germany
- Constitutional law firms based in Mexico
- Constitutional law firms based in Canada
- Constitutional law firms based in the Netherlands
- Constitutional law firms based in Poland
- Constitutional law firms based in Argentina
- Constitutional law firms based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 constitutional law firms based in Washington, United States. Snapshot: September 8, 2026. https://revenuebase.ai/companies/constitutional-law-firms/united-states/washington.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Constitutional law firms based in the United States
- Constitutional law firms based in Brazil
- Constitutional law firms based in Spain
- Constitutional law firms based in Italy
- Constitutional law firms based in France
- Constitutional law firms based in Germany
Company intelligence · public preview
Top 25 constitutional law firms based in Washington, United States
RevenueBase records 84 matching company records for constitutional law firms based in Washington, United States, with 3,572 tracked contacts and 2,267 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 8, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 constitutional law firms based in Washington, United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Venable LLPvenable.com HQ: Washington, DC, United StatesReported employees: 1,001-5,000 | Washington, DC, United States | 1,001-5,000 | Exact match | 1,790 contacts → |
“Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Wiley Rein LLPwiley.law HQ: Washington, DC, United StatesReported employees: 501-1,000 | Washington, DC, United States | 501-1,000 | Exact match | 576 contacts → |
“Founded in 1983, Wiley is a dominant presence in the nation’s capital.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Keller And Heckman LLPkhlaw.com HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 230 contacts → |
“Keller and Heckman, founded in 1962, has a broad practice in the areas of regulatory law, public policy, and litigation, serving both domestic and international clients.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Kellogg, Hansen, Todd, Figel & Frederick Pllckellogghansen.com HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 211 contacts → |
“Kellogg Hansen works in complex trial and appellate litigation.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Relman Colfax Pllcrelmanlaw.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 56 contacts → |
“Relman Colfax PLLC is a national civil rights law firm, with a litigation practice focused on combating discrimination and obtaining equity, including in the areas of housing…” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 44 contacts → |
“Berliner Corcoran & Rowe LLP is a boutique law firm focused on international law, export controls/sanctions/customs/OFAC/CFIUS, litigation, corporate and intellectual property law.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Katz Banks Kumin LLPkatzbanks.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 42 contacts → |
“The lawyers of Katz Banks Kumin are nationally recognized leaders in the areas of whistleblower law, discrimination and sexual harassment law, wage and hour law, employment law…” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Cooper & Kirk Pllccooperkirk.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 38 contacts → |
“Cooper & Kirk is a litigation boutique specializing in commercial, regulatory, and constitutional disputes in both federal and state courts.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Federal Practice Group, LLPfedpractice.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 33 contacts → |
“Federal Practice Group is a nationally recognized law firm specializing in federal employment, military law, government contracts, security clearance, litigation, and more.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 28 contacts → |
“Since its founding in 1971, DWG & P, has provided a broad range of counseling, regulatory, litigation and legislative services to clients in every region of the country.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Cuneo, Gilbert & Laduca, LLPcuneolaw.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 26 contacts → |
“We practice advocacy-and only advocacy.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Trister, Ross, Schadler & Gold, Pllctristerross.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 26 contacts → |
“Trister, Ross, Schadler & Gold, PLLC combines personalized client service with decades of broad experience and specialized legal expertise.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Stein Mitchell Beato & Missner LLPsteinmitchell.com HQ: Washington, DC, United StatesReported employees: 51-200 | Washington, DC, United States | 51-200 | Exact match | 26 contacts → |
“Stein Mitchell Beato & Missner LLP is a law firm located in Washington, D.C.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Constitutional Accountability Center CACtheusconstitution.org HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 22 contacts → |
“The Constitutional Accountability Center (CAC) is dedicated to fulfilling the inherently progressive promise of the Constitution’s text, history, and values.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Schaerr Jaffe LLPschaerr-jaffe.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 20 contacts → |
“Schaerr | Jaffe LLP is a Washington D.C.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Shaw Bransford & Roth, P.Cshawbransford.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 18 contacts → |
“Shaw Bransford & Roth, PC (SBR) provides superior legal services to and protects the rights of federal employees nationwide.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Silver, Freedman, Taff & Tiernan LLPsfttlaw.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 18 contacts → |
“Silver, Freedman, Taff & Tiernan LLP, is a preeminent legal services provider based in Washington, DC.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Murphy Anderson Pllcmurphypllc.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 15 contacts → |
“Murphy Anderson is a Washington-based law firm representing workers and unions.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | National Security LAW Firmnationalsecuritylawfirm.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 15 contacts → |
“The National Security Law Firm is a full-service, nationwide law firm highly specialized in representing current and former servicemembers and federal employees in matters…” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Terris, Pravlik & Millian, LLPtpmlaw.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 15 contacts → |
“Terris, Pravlik & Millian, LLP was founded by Bruce J.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Boyden Gray Pllcboydengray.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 13 contacts → |
“Boyden Gray PLLC is a boutique litigation and public policy firm, continuing C.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Watkinson Miller Pllcwatkinsonmiller.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 12 contacts → |
“WATKINSON MILLER PLLC is a law practice company based out of 1100 New Jersey Ave SE Suite 910, WASHINGTON, District of Columbia, United States.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Center For Individual Rightscir-usa.org HQ: Washington, DC, United StatesReported employees: 1-10 | Washington, DC, United States | 1-10 | Exact match | 10 contacts → |
“The Center for Individual Rights is a public interest law firm specializing in free speech issues and dedicated to the defense of individual rights.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Bernabei & Kabat, Pllcbernabeipllc.com HQ: Washington, DC, United StatesReported employees: 1-10 | Washington, DC, United States | 1-10 | Exact match | 10 contacts → |
“Workers Have Rights, We Know How to Protect Them.” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Harmon, Curran, Spielberg & Eisenberg, LLPharmoncurran.com HQ: Washington, DC, United StatesReported employees: 11-50 | Washington, DC, United States | 11-50 | Exact match | 9 contacts → |
“For more than forty years, we at Harmon, Curran, Spielberg + Eisenberg, LLP, have served the legal needs of individuals and organizations to help them advance social, economic and…” Recorded description excerpt · September 8, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 84 company matches
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Constitutional law firms: dataset insights
September 8, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
84 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Freshness & accuracy
How recently the business emails were verified and the company information checked
Email last verified
Median 10.0dCompany record updated
Median 50.0dHow this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 8, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Constitutional law firms by metro in the United States
Questions about this company list
What does Exact match mean for constitutional law firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many constitutional law firms did RevenueBase find based in Washington, United States?
The saved snapshot records 84 matching company records, 3,572 tracked contacts and 2,267 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 8, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 constitutional law firms based in Washington, United States. Snapshot: September 8, 2026. https://revenuebase.ai/companies/constitutional-law-firms/united-states/washington.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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