Company lists · Data verified August 2026

Top 25 Compliance consulting firms based in the United States

Name: Compliance consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 2,547 companies tracked

There are 2,547 compliance consulting firms headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 25,245 professional contacts across them, including 10,078 with verified work emails and 9,241 with mobile numbers. New York is the largest hub.

This list covers compliance consulting firms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

2,547Companies

25,245Contacts tracked

10,078Verified emails

9,241Mobile numbers

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The 25 largest compliance consulting firms based in the United States

Ranked by team size

Top 25 of 2,547 compliance consulting firms based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	ACA Group	New York, NY	1,001-5,000	1,475	1,032
2	CT Corporation	New York, NY	1,001-5,000	788	300
3	Solomonedwards	Wayne, PA	1,001-5,000	566	179
4	GSA National	Fairfax, VA	201-500	558	28
5	Enhesa	Arlington, VA	201-500	463	370
6	Controlcase	Fairfax, VA	201-500	407	300
7	IBM Promontory	Washington, DC	501-1,000	406	67
8	Registrar Corp	Hampton, VA	51-200	311	164
9	Comply	New York City, NY	201-500	299	238
10	Guidepost Solutions	Phoenix, AZ	201-500	263	201
11	Complyright, INC	Oxnard, CA	201-500	191	82
12	Lachman Consultant Services	Bethesda, MD	51-200	178	112
13	U.S. Compliance Environmental, Health & Safety Consulting	Excelsior, MN	51-200	162	128
14	Dla, LLC	New York, NY	201-500	161	93
15	Harbor Compliance	Lancaster, PA	201-500	149	107
16	Soho Square Solutions	New York, NY	201-500	140	9
17	HCPRO	Chicago, IL	201-500	136	60
18	360 Advanced	St Petersburg, FL	51-200	130	84
19	Risk & Regulatory Consulting LLC	Farmington, CT	51-200	124	70
20	Simplify Compliance	Brentwood, TN	501-1,000	94	49
21	Capital Edge Consulting	Tampa, FL	51-200	67	57
22	Doctorsmanagement, LLC	Knoxville, TN	51-200	65	12
23	IES Safety, LLC	Lexington, KY	201-500	65	9
24	RCP INC	Houston, TX	51-200	62	41
25	Control Solutions International	Woburn, MA	201-500	60	5

Showing 25 of 2,547 compliance consulting firms based in the United States

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Compliance consulting firms based in the United States at a glance

As of Aug 28, 2026

1-10Median size (employees)

New YorkLargest hub · 130 HQs

9,241Contacts with mobile numbers

47Emails re-verified in last 30 days

Companies by employee count

1-10

1,816

11-50

575

51-200

111

201-500

501-1,000

1,001-5,000

5,001-10,000

Compliance consulting firms by metro

Metro	Companies
Compliance consulting firms in New York	130
Compliance consulting firms in Washington	62
Compliance consulting firms in Houston	47
Compliance consulting firms in Miami	45
Compliance consulting firms in Atlanta	44
Compliance consulting firms in Chicago	37
Compliance consulting firms in Los Angeles	34

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “compliance consulting firms”, with match quality audited by blind human judging, and headquartered in the United States.
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: Contact records re-verify on a rolling cadence; 47 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many compliance consulting firms are there based in the United States?

There are 2,547 compliance consulting firms headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

ACA Group, headquartered in New York, tops this list with the largest team on record.

Which city has the most compliance consulting firms?

New York leads with 130 headquartered companies, followed by Washington (62) and Houston (47).

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 10,078 verified decision-maker contacts tracked across these 2,547 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.