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Company lists · Data refreshed September 2026

Top 25 Government consulting firms based in the United States

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 5,840 companies tracked

RevenueBase identified 5,840 government consulting firms headquartered in the United States as of September 2026 and tracks 105,862 professional contacts across them, including 34,084 with verified work emails and 46,929 with mobile numbers. Washington is the largest hub.

This list covers government 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. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review
5,840Companies
105,862Contacts tracked
34,084Verified emails
46,929Mobile numbers
Explore all 5,840 companies → Free signup · no credit card · 500 free credits

The 25 largest government consulting firms based in the United States

Ranked by team size
Top 25 of 5,840 government consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names government consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
Public Consulting GroupPartial evidence
Boston, MA, United StatesHQ checked Sep 3, 20261,001-5,0002,673

“Public Consulting Group (PCG) is a leading public sector solutions implementation and operations improvement firm that partners with health, education, and human services agencies…”

Source: company website · checked Sep 3, 2026
2
J.S. Held LLCIndirect evidence
Jericho, NY, United StatesHQ checked Sep 3, 20261,001-5,0001,924

“J.S.”

Source: company website · checked Sep 3, 2026
3
DCS CorpPartial evidence
Alexandria, VA, United StatesHQ checked Sep 3, 20261,001-5,0001,884

“DCS delivers advanced technology and management solutions to Government agencies in the national security sector.”

Source: company website · checked Sep 3, 2026
4
Davey Resource Group, INCIndirect evidence
Kent, OH, United StatesHQ checked Sep 3, 20261,001-5,0001,407

“We are officially known as Davey Resource Group Inc, but we are more likely to come up in conversation around a successful project we've completed for a client or a capability we…”

Source: company website · checked Sep 3, 2026
5
ArdurraIndirect evidence
Miami, AZ, United StatesHQ checked Sep 3, 20261,001-5,0001,248

“Expertly balancing experience and innovation to deliver unique solutions to public and private clients.”

Source: company website · checked Sep 3, 2026
6
Odyssey SystemsPartial evidence
Wakefield, MA, United StatesHQ checked Sep 3, 20261,001-5,000898

“Odyssey is a leading provider of outstanding management, analytical, and technical support services to both the government and private sectors.”

Source: company website · checked Sep 3, 2026
7
Iron BOW TechnologiesPartial evidence
Herndon, HI, United StatesHQ checked Sep 3, 2026501-1,000882

“We deliver mission success through next-generation solutions across government, healthcare, and commercial markets.”

Source: company website · checked Sep 3, 2026
8
ERGPartial evidence
Concord, GA, United StatesHQ checked Sep 3, 2026501-1,000674

“ERG is a multidisciplinary consulting firm offering a broad range of professional services.”

Source: company website · checked Sep 3, 2026
9
Salient CrgtIndirect evidence
Fairfax, VA, United StatesHQ checked Sep 3, 20261,001-5,000646

“For over 20 years, Salient CRGT has upheld its mission to "empower our diverse, hard-working team to deliver high-value solutions that make positive impacts on missions and…”

Source: company website · checked Sep 3, 2026
10
Abacus Technology CorporationIndirect evidence
Chevy Chase, MD, United StatesHQ checked Sep 3, 2026501-1,000626

“Abacus Technology Corporation delivers leading edge, high quality assistance in response to complex technology challenges.”

Source: company website · checked Sep 3, 2026
11
Planned Systems InternationalPartial evidence
Columbia, FL, United StatesHQ checked Sep 3, 20261,001-5,000608

“Since 1988, PSI teams have provided our government customers with innovative, cost effective solutions that solve today’s complex challenges, improve operational efficiencies, and…”

Source: company website · checked Sep 3, 2026
12
SolomonedwardsIndirect evidence
Wayne, PA, United StatesHQ checked Sep 3, 20261,001-5,000566

“For more than 25 years, SolomonEdwards has empowered organizations to tackle common and complex business challenges through strategic advisory, technical advocacy, and hands-on…”

Source: company website · checked Sep 3, 2026
13
Vencore INCIndirect evidence
Chantilly, VA, United StatesHQ checked Sep 3, 20261,001-5,000486

“As of June 1, 2018, we are Perspecta.”

Source: company website · checked Sep 3, 2026
14
The Mannik & Smith Group, INCIndirect evidence
Maumee, PA, United StatesHQ checked Sep 3, 2026501-1,000467

“Technical skill, relationships and leadership are the foundation of The Mannik & Smith Group, Inc.(MSG) and have been not just a tradition, but a way of doing business for 70…”

Source: company website · checked Sep 3, 2026
15
ALL Native Group, The Federal Services Division Of Ho-Chunk INCPartial evidence
Fairfax, NE, United StatesHQ checked Sep 3, 2026501-1,000434

“All Native Group services the federal government both domestically and internationally.”

Source: company website · checked Sep 3, 2026
16
Amyx, INCIndirect evidence
Reston, VA, United StatesHQ checked Sep 3, 2026501-1,000429

“At Amyx, Inc, a wholly owned subsidiary of Tetra Tech, our mission is to exceed our customer's expectations on every contract, to provide an environment that encourages…”

Source: company website · checked Sep 3, 2026
17
Edgewater Federal Solutions, INCStrong evidence
Frederick, ID, United StatesHQ checked Sep 3, 2026501-1,000407

“Edgewater Federal Solutions was founded in 2002 with the mission of being the best IT consulting company possible for our government clients, our contracting partners and our…”

Source: company website · checked Sep 3, 2026
18
Solix, INCPartial evidence
Parsippany, NJ, United StatesHQ checked Sep 3, 2026501-1,000347

“Solix, Inc.(Solix) is a leading national provider of consulting and business process solutions focused on complex program management, eligibility determination, customer care, and…”

Source: company website · checked Sep 3, 2026
19
GAP Solutions, INCIndirect evidence
Herndon, VA, United StatesHQ checked Sep 3, 2026501-1,000347
Source: company website · checked Sep 3, 2026
20
Business Integra INCIndirect evidence
Bethesda, MD, United StatesHQ checked Sep 3, 2026501-1,000338

“JOBSEEKERS: Our Recruiters only ever reach out from BusinessIntegra.com or PeopleIntegra.com email addresses.”

Source: company website · checked Sep 3, 2026
21
Lorven Technologies INCIndirect evidence
Plainsboro, NJ, United StatesHQ checked Sep 3, 20261,001-5,000323

“Lorven Technologies, Inc.”

Source: company website · checked Sep 3, 2026
22
Mayvin, INCIndirect evidence
Alexandria, VA, United StatesHQ checked Sep 3, 2026501-1,000310

“Mayvin is dedicated to protecting the interests of the United States.”

Source: company website · checked Sep 3, 2026
23
Whitney, Bradley & Brown WBBPartial evidence
Reston, VA, United StatesHQ checked Sep 3, 2026501-1,000272

“WBB (now a part of Serco) is a leading government and public sector solutions provider, dedicated to the enduring success of our clients.”

Source: company website · checked Sep 3, 2026
24
GRSIIndirect evidence
Bethesda, MD, United StatesHQ checked Sep 3, 2026501-1,000233

“GRSi is a professional services and technology innovations company, providing state-of-the art solutions across a broad range of requirements, in highly agile yet controlled…”

Source: company website · checked Sep 3, 2026
25
AcentiaPartial evidence
Falls Church, VA, United StatesHQ checked Sep 3, 20261,001-5,000214

“On April 1, 2015, Acentia was acquired by MAXIMUS Acentia provides technology and management solutions to Federal Government customers in the Health, Civilian, and Defense markets.”

Source: company website · checked Sep 3, 2026

Showing 25 of 5,840 government consulting firms based in the United States

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Government consulting firms based in the United States at a glance

As of Sep 3, 2026
1-10Median size (employees)
WashingtonLargest hub · 407 HQs
46,929Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
3,602
11-50
1,401
51-200
621
201-500
146
501-1,000
35
1,001-5,000
22
10001+
3

Verified emails by last verification

0–30
0
31–60
2,811
61–90
19,382
90–180
11,366
180+
525

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 government consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “government consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among government consulting firms, and records with no verified work email. Companies headquartered outside United States 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 an evidence 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, 34,084 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 3, 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.

Government consulting firms by metro

  • Government consulting firms in Washington407
  • Government consulting firms in Arlington140
  • Government consulting firms in Atlanta130
  • Government consulting firms in New York121
  • Government consulting firms in Alexandria95
  • Government consulting firms in Reston88
  • Government consulting firms in Austin73

Frequently asked

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

RevenueBase identified 5,840 government consulting firms headquartered in the 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?

Public Consulting Group, headquartered in Boston, tops this list with the largest team on record.

Which city has the most government consulting firms?

Washington leads with 407 headquartered companies, followed by Arlington (140) and Atlanta (130).

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 34,084 verified decision-maker contacts tracked across these 5,840 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 3, 2026.

Ready to reach these companies? Verified emails and direct dials for all 5,840 government consulting firms based in the United States. Start with a free account, no credit card.

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Related lists

Browse: Companies home · All United States lists · All Government consulting firms lists · New lists

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.

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