Company lists · Data refreshed September 2026

Top 25 Federal government consulting services based in Washington, United States

Name: Federal government consulting services based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 303 companies tracked

RevenueBase identified 303 federal government consulting services headquartered in Washington, United States as of September 2026 and tracks 5,420 professional contacts across them, including 1,565 with verified work emails. Washington is the largest hub.

This list covers federal government consulting services headquartered in Washington, 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

303Companies

5,420Contacts tracked

1,565Verified emails

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The 25 largest federal government consulting services based in Washington, United States

Ranked by team size

Top 25 of 303 federal government consulting services based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to federal government consulting services: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Computer World Services Corp. CWS	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	201-500	314 contacts →
	Indirect evidence “With over 30 years of hands-on experience, Computer World Services Corp.” Source: RevenueBase Database · checked Sep 21, 2026
2	TCG	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	263 contacts →
	Indirect evidence “Traditional we are not.” Source: RevenueBase Database · checked Sep 21, 2026
3	Mcallister & Quinn	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	170 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 21, 2026
4	The Columbia Group	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	501-1,000	147 contacts →
	Strong evidence “The Columbia Group is a premier federal services support company with a successful history of providing the United States government with program management, acquisition…” Source: RevenueBase Database · checked Sep 21, 2026
5	Herren Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	142 contacts →
	Indirect evidence “Here at Herren, our goals are to drive efficiency and maximize the value of every dollar our clients spend.” Source: RevenueBase Database · checked Sep 21, 2026
6	CGS Federal Contact Government Services	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	141 contacts →
	Partial evidence “Contact Government Services strives to simplify and enhance government bureaucracy through the optimization of human, technical, and financial resources.” Source: RevenueBase Database · checked Sep 21, 2026
7	Analytica	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	135 contacts →
	Partial evidence “Analytica is an award-winning consulting and technology services provider that supports public-sector health, civilian, and national security.” Source: RevenueBase Database · checked Sep 21, 2026
8	DHA Group, INC	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	201-500	135 contacts →
	Strong evidence “DHA is a full-service Information Technology and Consulting firm dedicated to providing mission-critical services to our Federal Government and commercial clients.” Source: RevenueBase Database · checked Sep 21, 2026
9	Venesco, LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	201-500	120 contacts →
	Strong evidence “Venesco, LLC is a premier government contractor delivering Healthcare, IT, Research & Development, and a range of mission‑critical services to federal agencies.” Source: RevenueBase Database · checked Sep 21, 2026
10	Integrated Finance & Accounting Solutions Ifas	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	201-500	111 contacts →
	Indirect evidence “IFAS is a professional services firm that leverages technology to provide integrated financial management solutions and capabilities that include Program Budgeting & Cost…” Source: RevenueBase Database · checked Sep 21, 2026
11	BCS LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	201-500	111 contacts →
	Partial evidence “BCS Allegient is a small business with a 30-year history of helping government, research, and private sector clients implement their programs and missions and achieve success.” Source: RevenueBase Database · checked Sep 21, 2026
12	Networking For Future NFF	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	108 contacts →
	Partial evidence “Since 1996, Networking For Future, Inc.(NFF) has been engineering the backbone of mission-critical systems for government and enterprise clients.” Source: RevenueBase Database · checked Sep 21, 2026
13	Corner Alliance	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	95 contacts →
	Strong evidence “Founded in 2007, Corner Alliance is a government consulting firm that serves federal clients primarily in the public safety, emergency management and business intelligence spaces.” Source: RevenueBase Database · checked Sep 21, 2026
14	RWD Consulting, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	201-500	93 contacts →
	Partial evidence “RWD Consulting, LLC provides a range of management and operations support and consulting services, administrative and logistical services, and technical and creative services to…” Source: RevenueBase Database · checked Sep 21, 2026
15	Blue Water Thinking	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	91 contacts →
	Indirect evidence “Strategy, Management and Technology Consultancy” Source: RevenueBase Database · checked Sep 21, 2026
16	Simple Technology Solutions	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	90 contacts →
	Strong evidence “Simple Technology Solutions (STS) has in-depth experience helping federal & state government agencies in their Agile/DevOps/Cloud adoption & transformation.” Source: RevenueBase Database · checked Sep 21, 2026
17	Veracity Engineering	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	80 contacts →
	Indirect evidence “Since 2001, Veracity Engineering has been successful in building, growing, and performing on a portfolio of technically challenging engineering and program management engagements…” Source: RevenueBase Database · checked Sep 21, 2026
18	Tsymmetry	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	79 contacts →
	Indirect evidence “You need more than a contractor.” Source: RevenueBase Database · checked Sep 21, 2026
19	JMA Solutions	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	77 contacts →
	Partial evidence “Headquartered in Washington, DC, JMA Solutions is an award-winning consulting firm with more than 20 years of experience delivering extraordinary customer service to our…” Source: RevenueBase Database · checked Sep 21, 2026
20	Longevity Consulting	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	71 contacts →
	Strong evidence “Longevity Consulting is a customer-focused strategic management and IT consulting firm that helps federal agencies achieve mission objectives, improve outcomes, and strengthen…” Source: RevenueBase Database · checked Sep 21, 2026
21	Patrona Corporation	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	69 contacts →
	Partial evidence “Patrona Corporation is a DoD federal contractor providing program management, engineering, strategic and operational planning, quality assurance, financial management, and…” Source: RevenueBase Database · checked Sep 21, 2026
22	SMI	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	11-50	59 contacts →
	Indirect evidence “For three decades, Strategic Marketing Innovations (SMI) has been the premier choice in Washington for companies, universities, nonprofits and public entities seeking to secure…” Source: RevenueBase Database · checked Sep 21, 2026
23	Strategix Management LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	201-500	59 contacts →
	Indirect evidence “Founded in 2016 by President and CEO, Jonathan Crawley, Strategix Management LLC employs cutting-edge technology to streamline and ignite program activities that increase the…” Source: RevenueBase Database · checked Sep 21, 2026
24	Parker Tide LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	58 contacts →
	Partial evidence “For over 20 years, Parker Tide has provided human resources support, personnel security, strategic solutions, and staff augmentation, nationwide to Federal customers.” Source: RevenueBase Database · checked Sep 21, 2026
25	Banner Staffing	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	n/a	49 contacts →
	Indirect evidence “Banner Staffing LLC is a high-quality provider of Professional, Management and Administrative support services.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: federal government consulting services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names federal government consulting services.
Partial evidence: Its own public description names part of federal government consulting services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name federal government consulting services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 303 federal government consulting services based in Washington, United States

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Federal government consulting services based in Washington, United States at a glance

As of Sep 21, 2026

28.9%Verified-email coverage

17.9Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Washington

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

160

11-50

51-200

201-500

501-1,000

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 303 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 federal government consulting services, 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 Washington, United States whose own description of what they do matches “federal government consulting services”. 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 federal government consulting services), 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 federal government consulting services, and records with no verified work email. Companies headquartered outside Washington 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, 1,565 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.

Federal government consulting services by metro in the United States

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 federal government consulting services, 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 federal government consulting services are there based in Washington, United States?

RevenueBase identified 303 federal government consulting services headquartered in Washington, 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?

Computer World Services Corp. CWS, headquartered in Washington, tops this list with the largest team on record.

Which city has the most federal government consulting services?

Washington leads with 303 headquartered companies, followed by Arlington (124) and Reston (93).

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 1,565 verified decision-maker contacts tracked across these 303 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.