Company lists · Data refreshed September 2026

Top 25 Constitutional law firms based in Denver, United States

RevenueBase identified 48 constitutional law firms headquartered in Denver, United States as of September 2026 and tracks 644 professional contacts across them, including 396 with verified work emails and 332 with mobile numbers. New York is the largest hub.

This list covers constitutional law firms headquartered in Denver, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 8, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 8, 2026 86% judged on-target in blind review
48Companies
644Contacts tracked
396Verified emails
332Mobile numbers
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The 25 largest constitutional law firms based in Denver, United States

Ranked by team size
Top 25 of 48 constitutional law firms based in Denver, United States, ranked by team size, largest first. Data refreshed Sep 8, 2026. RevenueBase Smart Search rates how each company's information relates to constitutional law firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 2026201-500231 contacts →

Indirect evidence

“Wheeler Trigg O’Donnell lawyers have taken more than 1,300 trials, arbitrations, and appeals to verdict, award, or opinion in 45 states and Washington, D.C, with exceptional…”

Source: RevenueBase Database · checked Sep 8, 2026
2Partial evidenceDenver, CO, United StatesHQ checked Sep 8, 202611-5049 contacts →

Partial evidence

“Ciancio Ciancio Brown, P.C,(CCB) is a boutique litigation law firm with offices in Denver, Broomfield, DTC, and Breckenridge.”

Source: RevenueBase Database · checked Sep 8, 2026
3Partial evidenceDenver, CO, United StatesHQ checked Sep 8, 202611-5031 contacts →

Partial evidence

“In the practice of law, your name and reputation are your most valuable assets.”

Source: RevenueBase Database · checked Sep 8, 2026
4Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 202611-5031 contacts →

Indirect evidence

“Higgins, Hopkins, McLain & Roswell exists to embody and exemplify the principles of service and stewardship.”

Source: RevenueBase Database · checked Sep 8, 2026
5Partial evidenceDenver, CO, United StatesHQ checked Sep 8, 20261-1029 contacts →

Partial evidence

“RATHOD |MOHAMEDBHAI LLC is a law firm of experienced trial attorneys representing individuals.”

Source: RevenueBase Database · checked Sep 8, 2026
6Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 202611-5028 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 8, 2026
7Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 202611-5025 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 8, 2026
8Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 202611-5025 contacts →

Indirect evidence

“Founded in 1972, Dill Dill Carr Stonbraker & Hutchings P.C.”

Source: RevenueBase Database · checked Sep 8, 2026
9Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 202611-5020 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 8, 2026
10Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 202611-5016 contacts →

Indirect evidence

“Haddon, Morgan and Foreman was founded in 1976 by former Denver public defenders, Hal Haddon and Bryan Morgan, to specialize in criminal defense and civil trial work.”

Source: RevenueBase Database · checked Sep 8, 2026
11Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 20261-1014 contacts →

Indirect evidence

“Willoughby & Associates has been offering exceptional representation to families in transition for nearly 30 years.”

Source: RevenueBase Database · checked Sep 8, 2026
12Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 202611-509 contacts →

Indirect evidence

“Ridley, McGreevy & Winocur, P.C.”

Source: RevenueBase Database · checked Sep 8, 2026
13Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 20261-106 contacts →

Indirect evidence

“KONTNIK | COHEN was formed with the intention of obtaining the best understanding of our clients to solve their legal challenges.”

Source: RevenueBase Database · checked Sep 8, 2026
14Partial evidenceDenver, CO, United StatesHQ checked Sep 8, 20261-106 contacts →

Partial evidence

“Primera Law Group, LLC is a Denver-based law firm that specializes in Employment Law, Civil Rights Law, and Consumer Protection Law on behalf of individuals and small businesses.”

Source: RevenueBase Database · checked Sep 8, 2026
15Partial evidenceDenver, CO, United StatesHQ checked Sep 8, 20261-106 contacts →

Partial evidence

“Stimson LaBranche Hubbard is a women-owned and women-led law firm.”

Source: RevenueBase Database · checked Sep 8, 2026
16Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 20261-106 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 8, 2026
17Partial evidenceDenver, CO, United StatesHQ checked Sep 8, 20261-105 contacts →

Partial evidence

“MDH LAW GROUP LLC is a legal services company based out of Denver, Colorado.”

Source: RevenueBase Database · checked Sep 8, 2026
18Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 20261-104 contacts →

Indirect evidence

“Fox & Robertson is a two-lawyer civil rights firm based in Denver, Colorado that litigates class action, organizational, and individual disability rights cases.”

Source: RevenueBase Database · checked Sep 8, 2026
19Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 20261-104 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 8, 2026
20Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 202611-503 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 8, 2026
21Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 202611-503 contacts →

Indirect evidence

“Glade Voogt Lord & Smith is a small firm by choice with big firm expertise.”

Source: RevenueBase Database · checked Sep 8, 2026
22Partial evidenceDenver, CO, United StatesHQ checked Sep 8, 20261-103 contacts →

Partial evidence

“Civil rights and employment law firm rooted in client-centered advocacy, movement lawyering, pro bono work, and representation of marginalized communities.”

Source: RevenueBase Database · checked Sep 8, 2026
23Partial evidenceDenver, CO, United StatesHQ checked Sep 8, 20261-102 contacts →

Partial evidence

“Colorado Criminal Defense Attorney and Personal Injury Lawyer At the Denver law offices of James L.”

Source: RevenueBase Database · checked Sep 8, 2026
24Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 20261-102 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 8, 2026
25Indirect evidenceDenver, CO, United StatesHQ checked Sep 8, 20261-102 contacts →

Indirect evidence

“Over 50 years of experience representing people against the powerful.”

Source: RevenueBase Database · checked Sep 8, 2026

Showing 25 of 48 constitutional law firms based in Denver, United States

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Constitutional law firms based in Denver, United States at a glance

As of Sep 8, 2026
61.5%Verified-email coverage
51.6%Mobile-number coverage
13.4Average contacts per company
1-10Median size (employees)
316.7%Largest-city concentration · New York
Sep 8, 2026Page data refreshed

Companies by employee count

1-10
31
11-50
14
51-200
2
201-500
1

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 10.0d

Company record updated

Median 66.0d

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among constitutional law firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Denver, United States whose own description of what they do matches “constitutional law firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names constitutional law firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among constitutional law firms, and records with no verified work email. Companies headquartered outside Denver are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 396 across the full list. 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.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names constitutional law firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many constitutional law firms are there based in Denver, United States?

RevenueBase identified 48 constitutional law firms headquartered in Denver, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Wheeler Trigg O'donnell LLP, headquartered in Denver, tops this list with the largest team on record.

Which city has the most constitutional law firms?

New York leads with 152 headquartered companies, 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 the top results, verified emails and direct dials included. Upgrading unlocks all 396 verified decision-maker contacts tracked across these 48 companies.

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.

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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 Smart Search, 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.