Company lists · Data refreshed September 2026

Top 25 Government contracting consulting firms based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 3,809 companies tracked

RevenueBase identified 3,809 company matches for government contracting consulting firms associated with the United States as of September 2026 and tracks 48,322 professional contacts across them, including 14,794 with verified work emails. Washington is the largest hub.

This list covers company matches for government contracting consulting 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 28, 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 28, 2026 How this list was built

3,809Companies

48,322Contacts tracked

14,794Verified emails

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The 25 largest government contracting consulting firms based in the United States

Ranked by team size

Top 25 of 3,809 company matches for government contracting consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Gov-Con Solutions	Exact match	Broomfield, CO, United StatesHQ recorded Sep 28, 2026	n/a	1,000 contacts →
	Exact match “Gov-Con provides financial and accounting solutions for government contractors such as SBIR Award Winners, DoD contractors, Prime Contractors and Subcontractors.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	The Vertex Companies LLC	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	501-1,000	765 contacts →
	Exact match “The Vertex Companies, LLC is a global consulting firm that provides strategic advisory, project management, and dispute resolution services for organizations that face complex…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Ads, INC	Exact match	Virginia Beach, VA, United StatesHQ recorded Sep 28, 2026	201-500	641 contacts →
	Exact match “ADS provides innovative and cost-effective solutions for our customers’ equipment, procurement, and logistics challenges.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	Planned Systems International	Exact match	Columbia, MD, United StatesHQ recorded Sep 28, 2026	1,001-5,000	611 contacts →
	Exact match “Since 1988, PSI teams have provided our government customers with innovative, cost effective solutions that solve today’s complex challenges, improve operational efficiencies, and…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	GSA National	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	201-500	558 contacts →
	Exact match “GSA National has been helping government contractors ensure compliance and streamline costs since 1991.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Solomonedwards	Exact match	Wayne, PA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	557 contacts →
	Exact match “For more than 25 years, SolomonEdwards has empowered organizations to tackle common and complex business challenges through strategic advisory, technical advocacy, and hands-on…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	DLC	Exact match	Chicago, IL, United StatesHQ recorded Sep 28, 2026	201-500	546 contacts →
	Exact match “DLC is an award-winning industry leader in Finance, Accounting, Program Management & Process Improvement Consulting.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Vencore INC	Exact match	Chantilly, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	485 contacts →
	Exact match “As of June 1, 2018, we are Perspecta.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	ALL Native Group, The Federal Services Division Of Ho-Chunk INC	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	501-1,000	437 contacts →
	Exact match “For more than 20 years, All Native Group has delivered specialized expertise to federal agencies across civilian, defense, intelligence, and international missions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Edgewater Federal Solutions, INC	Exact match	Frederick, MD, United StatesHQ recorded Sep 28, 2026	501-1,000	410 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Weaver Consultants Group	Exact match	Chicago, IL, United StatesHQ recorded Sep 28, 2026	201-500	382 contacts →
	Exact match “From its inception in 1991, Weaver Consultants Group has been founded upon the tenets of attentive and responsive customer service, strong project management, and solid internal…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	JPI	Exact match	Blacksburg, VA, United StatesHQ recorded Sep 28, 2026	51-200	373 contacts →
	Exact match “JPI is an Information Technology and Program Management Consulting Firm.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Deep Water Point & Associates	Exact match	Annapolis, MD, United StatesHQ recorded Sep 28, 2026	201-500	350 contacts →
	Exact match “Deep Water Point & Associates is composed of industry veterans and government experts who dedicate their expertise to maximize our clients’ competitive edge.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Peerless Technologies Corporation	Exact match	Fairborn, OH, United StatesHQ recorded Sep 28, 2026	201-500	326 contacts →
	Exact match “Peerless Technologies Corporation is a nationally recognized, award-winning, and reputable business serving federal government clients at more than 25 locations nationwide.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Business Integra INC	Exact match	Bethesda, MD, United StatesHQ recorded Sep 28, 2026	501-1,000	324 contacts →
	Exact match “JOBSEEKERS: Our Recruiters only ever reach out from BusinessIntegra.com or PeopleIntegra.com email addresses.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Planate Management Group	Exact match	Alexandria, VA, United StatesHQ recorded Sep 28, 2026	201-500	318 contacts →
	Exact match “Planate Management Group (PMG) is a global leader in delivering engineering, construction and program management solutions that support mission success in complex and high-risk…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	ATS	Exact match	Cambridge, United StatesHQ recorded Sep 28, 2026	n/a	313 contacts →
	Exact match “ATS – 40 Years: Advancing Projects, Boosting Profits, and Cutting Costs For over 40 years, ATS has partnered with organizations worldwide to deliver outstanding results.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Iquasar LLC	Exact match	Sterling, VA, United StatesHQ recorded Sep 28, 2026	201-500	312 contacts →
	Exact match “Based in Sterling, Virginia, iQuasar LLC, with over 20 years of experience, we help small and medium businesses grow in the federal marketplace through Proposal Development…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Quantech Services INC	Exact match	Lexington, MA, United StatesHQ recorded Sep 28, 2026	201-500	299 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	CSG Government Solutions	Exact match	Chicago, IL, United StatesHQ recorded Sep 28, 2026	201-500	287 contacts →
	Exact match “CSG is a national leader in planning, managing and supporting complex projects that modernize the IT and business processes of large government programs.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	PE Systems, INC	Exact match	Fairfax, VA, United StatesHQ recorded Sep 28, 2026	201-500	273 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Cbeyondata SMX	Exact match	Arlington, VA, United StatesHQ recorded Sep 28, 2026	201-500	266 contacts →
	Exact match “cBEYONData improves the business of government by understanding the overlapping relationship between data and dollars.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	TCG	Exact match	Washington, DC, United StatesHQ recorded Sep 28, 2026	51-200	263 contacts →
	Exact match “Traditional we are not.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Netimpact Strategies INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 28, 2026	201-500	254 contacts →
	Exact match “NetImpact has been a Trusted Advisor driving impact through digital transformation for the Federal Government for over a decade.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	Kalman & Company, INC	Exact match	Virginia Beach, VA, United StatesHQ recorded Sep 28, 2026	201-500	213 contacts →
	Exact match “Kalman & Company, Inc.(Kalman), headquartered in Virginia Beach, VA, was founded by Barbara and Walter Kalman in 1986.” Recorded in the RevenueBase company graph · Sep 28, 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 “government contracting consulting 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 3,809 government contracting consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 14,794 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Government contracting consulting firms based in the United States at a glance

As of Sep 28, 2026

30.6%Verified-email coverage

12.7Average contacts per company

1-10Median size (employees)

7.5%Largest-city concentration · Washington

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

2,555

11-50

836

51-200

318

201-500

501-1,000

1,001-5,000

5,001-10,000

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 3,809 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 “government contracting consulting 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 14,794 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 28, 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.

Government contracting consulting firms by metro

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

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

RevenueBase identified 3,809 company matches for government contracting consulting 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?

Gov-Con Solutions tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most government contracting consulting firms?

Washington leads with 284 company records, followed by Arlington (104) and Alexandria (82).

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 14,794 professional contacts with verified work emails tracked across these 3,809 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 28, 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.