Company lists · Data refreshed September 2026

Top 25 Government consultants based in the United States

RevenueBase identified 4,632 government consultants headquartered in the United States as of September 2026 and tracks 66,663 professional contacts across them, including 27,132 with verified work emails. Washington is the largest hub.

This list covers government consultants 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 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 21, 2026 86% judged on-target in blind review
4,632Companies
66,663Contacts tracked
27,132Verified emails
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The 25 largest government consultants based in the United States

Ranked by team size
Top 25 of 4,632 government consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to government consultants: 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 evidenceChicago, IL, United StatesHQ checked Sep 21, 20265,001-10,0006,978 contacts →

Indirect evidence

“As one of the original firms, we’ve never lost sight of the fact that consulting is a people business.”

Source: RevenueBase Database · checked Sep 21, 2026
2Indirect evidenceBoston, MA, United StatesHQ checked Sep 21, 20261,001-5,0001,781 contacts →

Indirect evidence

“Analysis Group is one of the largest international economics consulting firms, with more than 1,500 professionals across 15 offices in North America, Europe, and Asia.”

Source: RevenueBase Database · checked Sep 21, 2026
3Indirect evidenceBoston, MA, United StatesHQ checked Sep 21, 20261,001-5,0001,479 contacts →

Indirect evidence

“Charles River Associates (CRA) is a global consulting firm specializing in litigation, regulatory, financial, and management consulting.”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceChicago, AL, United StatesHQ checked Sep 21, 202610001+1,458 contacts →

Indirect evidence

“HORNE is now a part of BDO USA.”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceMiami, FL, United StatesHQ checked Sep 21, 20261,001-5,0001,260 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
6Partial evidenceWakefield, MA, United StatesHQ checked Sep 21, 20261,001-5,000906 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
7Indirect evidenceSeattle, WA, United StatesHQ checked Sep 21, 2026501-1,000859 contacts →

Indirect evidence

“The right team is more than an advantage.”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 2026501-1,000782 contacts →

Indirect evidence

“In 2026, NERA is celebrating 65 years of trusted economics, experts, and experience.”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 21, 2026501-1,000765 contacts →

Indirect evidence

“The Vertex Companies, LLC is a global consulting firm that provides strategic advisory, project management, and dispute resolution services for organizations that face complex…”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceConcord, MA, United StatesHQ checked Sep 21, 2026501-1,000663 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceBurlingame, CA, United StatesHQ checked Sep 21, 2026501-1,000570 contacts →

Indirect evidence

“Acumen, LLC works to improve the information provided to policymakers who design and revise welfare, health, education, labor, and business programs at the national, state, and…”

Source: RevenueBase Database · checked Sep 21, 2026
12Partial evidenceFairfax, VA, United StatesHQ checked Sep 21, 2026201-500558 contacts →

Partial evidence

“GSA National has been helping government contractors ensure compliance and streamline costs since 1991.”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceWayne, PA, United StatesHQ checked Sep 21, 20261,001-5,000557 contacts →

Indirect evidence

“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: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceBoston, MA, United StatesHQ checked Sep 21, 2026201-500553 contacts →

Partial evidence

“The Brattle Group answers complex economic, finance, and regulatory questions for corporations, law firms, and governments around the world.”

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceChicago, IL, United StatesHQ checked Sep 21, 2026201-500546 contacts →

Indirect evidence

“DLC is an award-winning industry leader in Finance, Accounting, Program Management & Process Improvement Consulting.”

Source: RevenueBase Database · checked Sep 21, 2026
16Indirect evidenceMaumee, OH, United StatesHQ checked Sep 21, 2026501-1,000467 contacts →

Indirect evidence

“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: RevenueBase Database · checked Sep 21, 2026
17Indirect evidenceHouston, TX, United StatesHQ checked Sep 21, 2026201-500461 contacts →

Indirect evidence

“Lockwood, Andrews & Newnam, Inc.(LAN) is a full-service consulting firm offering planning, engineering and program management services.”

Source: RevenueBase Database · checked Sep 21, 2026
18Partial evidenceIndianapolis, IN, United StatesHQ checked Sep 21, 2026201-500431 contacts →

Partial evidence

“We are a passionate team of engineers, mathematicians, data analysts, project managers, and business consultants.”

Source: RevenueBase Database · checked Sep 21, 2026
19Indirect evidenceWashington, DC, United StatesHQ checked Sep 21, 2026501-1,000403 contacts →

Indirect evidence

“IBM Promontory is a global leader in strategy, risk management, and compliance consulting.#IBMConsulting”

Source: RevenueBase Database · checked Sep 21, 2026
20Partial evidenceChicago, IL, United StatesHQ checked Sep 21, 2026201-500382 contacts →

Partial evidence

“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…”

Source: RevenueBase Database · checked Sep 21, 2026
21Partial evidenceAnnapolis, MD, United StatesHQ checked Sep 21, 2026201-500350 contacts →

Partial evidence

“Deep Water Point & Associates is composed of industry veterans and government experts who dedicate their expertise to maximize our clients’ competitive edge.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceArlington, VA, United StatesHQ checked Sep 21, 2026201-500335 contacts →

Indirect evidence

“Technomics is a growing, employee-owned consulting firm that specializes in the exciting and challenging field of weapon system cost analysis.”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceIrvine, CA, United StatesHQ checked Sep 21, 2026201-500332 contacts →

Indirect evidence

“LSA is a diversified environmental, transportation, and community planning firm that evolved from a small consulting firm.”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceSterling, VA, United StatesHQ checked Sep 21, 2026201-500312 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceLexington, MA, United StatesHQ checked Sep 21, 2026201-500299 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 4,632 government consultants based in the United States

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Government consultants based in the United States at a glance

As of Sep 21, 2026
40.7%Verified-email coverage
14.4Average contacts per company
1-10Median size (employees)
9.4%Largest-city concentration · Washington
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
3,241
11-50
995
51-200
291
201-500
63
501-1,000
19
1,001-5,000
14
5,001-10,000
1
10001+
2

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 4,632 companies.

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 consultants, 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 the United States whose own description of what they do matches “government consultants”. 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 government consultants), 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 government consultants, 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 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, 27,132 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 21, 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 government consultants, 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 government consultants are there based in the United States?

RevenueBase identified 4,632 government consultants 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?

Kearney, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most government consultants?

Washington leads with 437 headquartered companies, followed by New York (136) and Arlington (102).

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 27,132 verified decision-maker contacts tracked across these 4,632 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 21, 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.