Company lists · Data refreshed September 2026

Top 25 Administrative law firms based in the United States

RevenueBase identified 5,185 company matches for administrative law firms associated with the United States as of September 2026 and tracks 85,087 professional contacts across them, including 46,121 with verified work emails. New York is the largest hub.

This list covers company matches for administrative law firms associated with the 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 27, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 27, 2026 How this list was built
5,185Companies
85,087Contacts tracked
46,121Verified emails
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The 25 largest administrative law firms based in the United States

Ranked by team size
Top 25 of 5,185 company matches for administrative law firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchAtlanta, GA, United StatesHQ recorded Sep 27, 20261,001-5,0002,708 contacts →

Exact match

“Ogletree Deakins is one of the largest labor and employment law firms representing management in all types of employment-related legal matters.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
2Exact matchColumbia, SC, United StatesHQ recorded Sep 27, 20261,001-5,0002,012 contacts →

Exact match

“Established in 1897, Nelson Mullins is an Am Law 100 firm of more than attorneys, policy advisors and professionals with 33 offices in 17 states and Washington, D.C.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
3Exact matchCincinnati, OH, United StatesHQ recorded Sep 27, 20261,001-5,0001,980 contacts →

Exact match

“At Taft, we work as one team, driven and committed to helping you succeed.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
4Exact matchWashington, DC, United StatesHQ recorded Sep 27, 20261,001-5,0001,790 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 27, 2026 · View company records in RevenueBase
5Exact matchPhiladelphia, PA, United StatesHQ recorded Sep 27, 20261,001-5,0001,682 contacts →

Exact match

“Ballard Spahr LLP, an Am Law 100 law firm with more than 750 lawyers in 19 U.S.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
6Exact matchPhoenix, AZ, United StatesHQ recorded Sep 27, 2026501-1,0001,219 contacts →

Exact match

“Founded in 1938, Snell & Wilmer is a full-service business law firm with more than 500 lawyers practicing in 17 locations throughout the United States and in Mexico.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
7Exact matchMiami, FL, United StatesHQ recorded Sep 27, 20261,001-5,0001,068 contacts →

Exact match

“Over the past 25 years, QPWB is one of the fastest-growing law firms in the US.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
8Exact matchAtlanta, GA, United StatesHQ recorded Sep 27, 2026501-1,000815 contacts →

Exact match

“Established in 1989, Hall Booth Smith, P.C.(HBS) is a full-service law firm with 33 offices across the United States.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
9Exact matchAtlanta, GA, United StatesHQ recorded Sep 27, 2026201-500746 contacts →

Exact match

“FordHarrison LLP - your partner in employment law.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
10Exact matchNew York, NY, United StatesHQ recorded Sep 27, 2026501-1,000690 contacts →

Exact match

“Kelley Drye is an AmLaw 200 law firm of more than 350 lawyers and other professionals practicing in New York, NY; Washington, D.C; Chicago, IL; Houston, TX, Los Angeles, CA; San…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
11Exact matchOrlando, FL, United StatesHQ recorded Sep 27, 2026501-1,000672 contacts →

Exact match

“GrayRobinson is a multidimensional team of attorneys, advisors, and consultants recognized as one of the most influential firms in Florida.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
12Exact matchHartford, CT, United StatesHQ recorded Sep 27, 2026201-500622 contacts →

Exact match

“Robinson+Cole is a service mark of Robinson & Cole LLP, a law firm with offices throughout the Northeast, Mid-Atlantic, Florida, and California serving regional, national, and…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
13Exact matchCharlotte, NC, United StatesHQ recorded Sep 27, 2026501-1,000584 contacts →

Exact match

“Businesses and local governments turn to Parker Poe to structure transactions, navigate regulations, and resolve disputes.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
14Exact matchWashington, DC, United StatesHQ recorded Sep 27, 2026501-1,000576 contacts →

Exact match

“Founded in 1983, Wiley is a dominant presence in the nation’s capital.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
15Exact matchPittsburgh, PA, United StatesHQ recorded Sep 27, 2026501-1,000570 contacts →

Exact match

“Eckert Seamans Cherin & Mellott LLC has lawyers in offices throughout the United States, including Harrisburg, Philadelphia, and Pittsburgh, Pennsylvania; Boston, Massachusetts…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
16Exact matchRiverside, CA, United StatesHQ recorded Sep 27, 2026201-500522 contacts →

Exact match

“Best Best & Krieger serves as a trusted partner and strategist to public and private sector clients across the nation.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
17Exact matchCleveland, OH, United StatesHQ recorded Sep 27, 2026201-500481 contacts →

Exact match

“Tucker Ellis LLP is a full-service law firm of more than 240 lawyers serving clients from “11 Long Hallways” nationwide: Atlanta, Chicago, Cleveland, Columbus, Los Angeles…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
18Exact matchChicago, IL, United StatesHQ recorded Sep 27, 2026501-1,000424 contacts →

Exact match

“Litchfield Cavo LLP began as a small firm of attorneys experienced in insurance and business defense matters.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
19Exact matchPittsburgh, PA, United StatesHQ recorded Sep 27, 2026201-500400 contacts →

Exact match

“21 Offices | 11 States | 1 Firm Dickie, McCamey & Chilcote, P.C.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
20Exact matchSt. Louis, MO, United StatesHQ recorded Sep 27, 2026201-500387 contacts →

Exact match

“Over 45 years providing superior legal services to clients of every size throughout the Midwest and across the country, Sandberg Phoenix is consistently rated as one of St.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
21Exact matchMorristown, NJ, United StatesHQ recorded Sep 27, 2026201-500344 contacts →

Exact match

“McElroy, Deutsch, Mulvaney & Carpenter, LLP ("McElroy Deutsch") is a diverse practice with lawyers who place the client first.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
22Exact matchPhiladelphia, PA, United StatesHQ recorded Sep 27, 2026201-500336 contacts →

Exact match

“For over 50 years, Post & Schell’s attorneys have combined the operational knowledge and insight into the industries they represent with creative legal solutions – and helped…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
23Exact matchLos Angeles, CA, United StatesHQ recorded Sep 27, 2026201-500332 contacts →

Exact match

“Nossaman LLP is a national law firm with attorneys and policy advisors located in 12 offices throughout the United States.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
24Exact matchCharleston, WV, United StatesHQ recorded Sep 27, 2026201-500330 contacts →

Exact match

“Jackson Kelly PLLC is a national law firm representing leading global corporations, national companies, entrepreneurs and individuals in areas of law such as environmental…”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase
25Exact matchGrand Rapids, MI, United StatesHQ recorded Sep 27, 2026201-500321 contacts →

Exact match

“Miller Johnson was founded in 1959 and is committed to excellence in service to our business, institutional and individual clients.”

Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase

Showing 25 of 5,185 administrative law firms based in the United States

See the full list, filter by size, metro and specialty, and access 46,121 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Administrative law firms based in the United States at a glance

As of Sep 27, 2026
54.2%Verified-email coverage
16.4Average contacts per company
1-10Median size (employees)
4.5%Largest-city concentration · New York
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
3,130
11-50
1,592
51-200
381
201-500
46
501-1,000
11
1,001-5,000
8

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 5,185 companies.

How 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 the United States whose business descriptions match “administrative 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 46,121 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 27, 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.

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 “administrative law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many administrative law firms are there based in the United States?

RevenueBase identified 5,185 company matches for administrative law firms associated with the 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?

Ogletree Deakins tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most administrative law firms?

New York leads with 233 company records, followed by Washington (132) and Chicago (126).

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 46,121 professional contacts with verified work emails tracked across these 5,185 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 27, 2026.

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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.