Company lists · Data refreshed September 2026

Top 25 State government consulting firms based in the United States

RevenueBase identified 436 state government consulting firms headquartered in the United States as of September 2026 and tracks 3,910 professional contacts across them, including 1,555 with verified work emails. Washington is the largest hub.

This list covers state 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 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 29, 2026 86% judged on-target in blind review
436Companies
3,910Contacts tracked
1,555Verified emails
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The 25 largest state government consulting firms based in the United States

Ranked by team size
Top 25 of 436 state government consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to state government consulting 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
1Strong evidenceArlington, VA, United StatesHQ checked Sep 29, 202651-200289 contacts →

Strong evidence

“Capitol Bridge is a leading services provider for State and Federal government customers”

Source: RevenueBase Database · checked Sep 29, 2026
2Indirect evidenceWashington, DC, United StatesHQ checked Sep 29, 202651-200263 contacts →

Indirect evidence

“Traditional we are not.”

Source: RevenueBase Database · checked Sep 29, 2026
3Partial evidenceIrvine, CA, United StatesHQ checked Sep 29, 2026201-500221 contacts →

Partial evidence

“Interwest specializes in providing professional and consulting services to public agencies across California, Nevada, Colorado, and beyond.”

Source: RevenueBase Database · checked Sep 29, 2026
4Strong evidenceWashington, DC, United StatesHQ checked Sep 29, 202651-200170 contacts →

Strong evidence

“McAllister & Quinn is a Washington, DC consulting firm that provides a comprehensive range of services to a diverse group of clients with issues before the federal government.”

Source: RevenueBase Database · checked Sep 29, 2026
5Strong evidenceFairfax, VA, United StatesHQ checked Sep 29, 202651-200118 contacts →

Strong evidence

“McKing Consulting Corporation provides a variety of general and specialized management consulting services to the federal government, state agencies, nonprofits, and public and…”

Source: RevenueBase Database · checked Sep 29, 2026
6Indirect evidenceNationwide, United StatesHQ checked Sep 29, 20261,001-5,000116 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
7Strong evidenceArlington, VA, United StatesHQ checked Sep 29, 202651-200102 contacts →

Strong evidence

“Stateside Associates is the largest state and local government affairs firm.”

Source: RevenueBase Database · checked Sep 29, 2026
8Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 29, 202611-5061 contacts →

Partial evidence

“With unparalleled procurement and strategy consulting expertise, we approach each project with a fresh perspective and genuine curiosity to support our public sector clients.”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceLoveland, CO, United StatesHQ checked Sep 29, 202651-20059 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
10Partial evidenceMorristown, NJ, United StatesHQ checked Sep 29, 202611-5053 contacts →

Partial evidence

“Millennium Strategies is the largest full-service grants consulting firm in the region.”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceIndianapolis, IN, United StatesHQ checked Sep 29, 202611-5051 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
12Partial evidenceNashville, TN, United StatesHQ checked Sep 29, 202651-20051 contacts →

Partial evidence

“Collier Engineering Company, Inc, a privately-owned consulting firm based in Nashville, Tennessee, has provided exceptional engineering and design services since its founding in…”

Source: RevenueBase Database · checked Sep 29, 2026
13Strong evidenceWashington, DC, United StatesHQ checked Sep 29, 202651-20051 contacts →

Strong evidence

“Carmen Group is Washington’s leading government affairs consulting firm.”

Source: RevenueBase Database · checked Sep 29, 2026
14Strong evidenceTemecula, CA, United StatesHQ checked Sep 29, 202651-20050 contacts →

Strong evidence

“NBS is a California based consulting firm, focusing on supporting local governments and communities in California and across the United States with funding efforts to support…”

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceBridgewater, VA, United StatesHQ checked Sep 29, 202651-20049 contacts →

Indirect evidence

“We partner with public agencies to strengthen operations, improve outcomes, and support the communities they serve.”

Source: RevenueBase Database · checked Sep 29, 2026
16Strong evidenceSan Mateo, CA, United StatesHQ checked Sep 29, 202611-5044 contacts →

Strong evidence

“At Matrix Consulting Group, we are dedicated to providing high-quality, detailed analysis for local governments.”

Source: RevenueBase Database · checked Sep 29, 2026
17Partial evidenceSacramento, CA, United StatesHQ checked Sep 29, 202651-20042 contacts →

Partial evidence

“Delegata is a management and technology consulting firm headquartered in Sacramento, California, celebrating its 20-year anniversary in providing services and solutions to local…”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceChevy Chase, MD, United StatesHQ checked Sep 29, 202611-5042 contacts →

Indirect evidence

“PKH Enterprises offers the services of experienced professionals who combine legal, policy and technical expertise with common sense, good communication and perseverance in order…”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceCambridge, MA, United StatesHQ checked Sep 29, 202651-20040 contacts →

Indirect evidence

“Born from the urgency of emergency preparedness in 2004, BME Strategies brings a relentless bias toward action to public health transformation.”

Source: RevenueBase Database · checked Sep 29, 2026
20Strong evidenceMiami, FL, United StatesHQ checked Sep 29, 202611-5040 contacts →

Strong evidence

“LSN Partners is a full-service bi-partisan consulting firm offering strategic advice and advocacy in government affairs, government procurement, emergency management, business…”

Source: RevenueBase Database · checked Sep 29, 2026
21Indirect evidenceElk Grove, CA, United StatesHQ checked Sep 29, 202651-20033 contacts →

Indirect evidence

“MRG MISSION: OUR PASSION is to preserve our client’s values, integrity, and standards and promote their success through our professional services.”

Source: RevenueBase Database · checked Sep 29, 2026
22Strong evidenceRichmond, VA, United StatesHQ checked Sep 29, 202611-5032 contacts →

Strong evidence

“Winvale is a leading provider of consulting services to government contractors across all industries and disciplines.”

Source: RevenueBase Database · checked Sep 29, 2026
23Partial evidenceHialeah, FL, United StatesHQ checked Sep 29, 202611-5030 contacts →

Partial evidence

“Q-Q Research Consultants is a full service consulting firm with extensive experience in research and program evaluation.”

Source: RevenueBase Database · checked Sep 29, 2026
24Partial evidenceFort Lauderdale, FL, United StatesHQ checked Sep 29, 202611-5030 contacts →

Partial evidence

“Our team of professionals provides expert advisory and project solutions to government agencies nationwide, large and small, to improve organizational effectiveness and expedite…”

Source: RevenueBase Database · checked Sep 29, 2026
25Strong evidenceFolsom, CA, United StatesHQ checked Sep 29, 202611-5027 contacts →

Strong evidence

“Citygate is a public sector consultancy dedicated to “The Business of Better Government.” Through our “Virtual City Hall” model, we provide management consulting to the full array…”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 436 state government consulting firms based in the United States

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State government consulting firms based in the United States at a glance

As of Sep 29, 2026
39.8%Verified-email coverage
9.0Average contacts per company
1-10Median size (employees)
6.4%Largest-city concentration · Washington
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
327
11-50
84
51-200
21
201-500
2
501-1,000
1
1,001-5,000
1

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 436 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 state government consulting 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 the United States whose own description of what they do matches “state government consulting 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 state government consulting 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 state 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 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, 1,555 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 29, 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.

State government consulting firms by metro

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 state government consulting 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 state government consulting firms are there based in the United States?

RevenueBase identified 436 state 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?

Capitol Bridge, headquartered in Arlington, tops this list with the largest team on record.

Which city has the most state government consulting firms?

Washington leads with 28 headquartered companies, followed by Sacramento (21) and Tallahassee (13).

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 1,555 verified decision-maker contacts tracked across these 436 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 29, 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.