Company lists · Data refreshed September 2026
Top 25 Federal consulting firms based in Mclean, United States
RevenueBase identified 65 federal consulting firms headquartered in Mclean, United States as of September 2026 and tracks 2,167 professional contacts across them, including 617 with verified work emails. Washington is the largest hub.
This list covers federal consulting firms headquartered in Mclean, 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 14, 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.
The 25 largest federal consulting firms based in Mclean, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 399 contacts → | ||||
Partial evidence “Based in McLean, Va, Attain Partners is a leading management and technology consulting firm delivering services and solutions to advance client missions across the education…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 236 contacts → | ||||
Indirect evidence “Zachary Piper Solutions (ZPS) provides technical and professional services in support of the United States government across six key sectors: Intelligence, Defense, Energy…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 224 contacts → | ||||
Strong evidence “ValidaTek is a premier government IT consulting firm based in the Washington DC area that drives technology transformation and secures mission-critical systems for our federal…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 176 contacts → | ||||
Indirect evidence “BE is a trusted partner on missions of vital importance to our customers, the nation and the world.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 153 contacts → | ||||
Partial evidence “Integral partners with federal defense, intelligence, and civilian leaders to tackle their most important challenges and deliver transformative solutions.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 110 contacts → | ||||
Indirect evidence “We bridge the gap between people & technology.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 69 contacts → | ||||
Indirect evidence “Trowbridge & Trowbridge, An Agile Defense Company, delivers transformational technology solutions that anticipate emerging requirements, increase operational efficiencies and…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 57 contacts → | ||||
Strong evidence “Sigma Health Consulting, LLC (Sigma) is a woman-owned, veteran-owned small business (WOSB, VOSB) with leadership that has over 30 years of experience in the federal sector…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 57 contacts → | ||||
Partial evidence “OCT Consulting LLC is a Small Business providing professional services and information technology solutions to U.S.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 47 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 45 contacts → | ||||
Indirect evidence “Blackwatch is a small business headquartered in Mclean, VA with offices in O'Fallon, IL and Carmichael, CA.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 28 contacts → | ||||
Partial evidence “Leading Path is an award-winning, minority, woman-owned (NMSDC / MBE) technology consulting company that brings our clients top talent and creative solutions.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 23 contacts → | ||||
Partial evidence “Stratitia is a customer-driven professional services and management consulting firm offering strategic consulting, operational support, logistics and technology enablement to…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 19 contacts → | ||||
Strong evidence “Award-winning, woman-owned management consulting firm supporting the Federal, state, and local governments across the U.S.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 18 contacts → | ||||
Partial evidence “Sunrays International is a globally-integrated consulting, program management and shared services provider.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 17 contacts → | ||||
Partial evidence “VIATEQ is a proactive provider of collaborative solutions for federal government agencies.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 17 contacts → | ||||
Indirect evidence “SkySoft, INC is a Small, Women-owned and Minority-owned Business (SWaM) certified company based in VA and we are in Information Technology & Management Consultancy founded by Team…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 16 contacts → | ||||
Partial evidence “TechnaLink is a leading woman- and minority-owned IT services and management consulting provider located in the Washington, DC, area.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 15 contacts → | ||||
Indirect evidence “Brave is committed to improving the government technology ecosystem and improving the citizen experience through digital transformation and modernization.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 13 contacts → | ||||
Strong evidence “AXIS Management Group (AXIS) is a fast-growing consulting services company offering integrated IT, scientific, and strategic solutions for the Federal Government, large…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 13 contacts → | ||||
Partial evidence “Understanding the federal market requires knowledge of ever-changing policies, contracting trends, risks, and a unique set of barriers to entry.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 11 contacts → | ||||
Partial evidence “NuvoLogic Consulting focuses on financial management and information technology solutions for private and public sector clients.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 11 contacts → | ||||
Partial evidence “Occam Solutions is a leading provider of consulting system integration, and mission support services.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 10 contacts → | ||||
Strong evidence “Fuel Consulting, LLC is an elite management-consulting firm specializing in powering organizational change in demanding times in the federal, nonprofit, and commercial sectors.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 10 contacts → | ||||
Partial evidence “Krystle Klear Communications helps to bridge the gap between technology solutions providers and the US federal government.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
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 consulting firms. 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 consulting firms.
- Partial evidence
- Its own public description names part of federal consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name federal consulting firms. 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 65 federal consulting firms based in Mclean, United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 617 reachable decision-makers.
Free signup · no credit card
Federal consulting firms based in Mclean, United States at a glance
As of Sep 14, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Mclean, so it is reported there. Company counts and contact totals on this page are exact for Mclean, over 65 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 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 Mclean, United States whose own description of what they do matches “federal 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 federal 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 federal consulting firms, and records with no verified work email. Companies headquartered outside Mclean 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, 617 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 14, 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 consulting firms by metro in the United States
- Federal consulting firms in Washington361
- Federal consulting firms in Arlington136
- Federal consulting firms in Atlanta109
- Federal consulting firms in Alexandria95
- Federal consulting firms in New York93
- Federal consulting firms in Reston91
- Federal consulting firms in Mclean65
- Federal consulting firms in Austin64
- Federal consulting firms in Fairfax64
- Federal consulting firms in Houston63
- Federal consulting firms in Chicago61
- Federal consulting firms in Vienna56
- Federal consulting firms in Bethesda50
- Federal consulting firms in Leesburg47
- Federal consulting firms in Rockville45
- Federal consulting firms in Columbia44
- Federal consulting firms in Los Angeles44
- Federal consulting firms in San Diego43
- Federal consulting firms in Sacramento42
- Federal consulting firms in Ashburn40
- Federal consulting firms in Herndon40
- Federal consulting firms in Miami40
- Federal consulting firms in Seattle35
- Federal consulting firms in Chantilly34
- Federal consulting firms in Dallas34
- Federal consulting firms in San Antonio34
- Federal consulting firms in Silver Spring33
- Federal consulting firms in Falls Church32
- Federal consulting firms in Tampa32
- Federal consulting firms in San Francisco29
- Federal consulting firms in Tallahassee29
- Federal consulting firms in Baltimore27
- Federal consulting firms in Boston26
- Federal consulting firms in Philadelphia26
- Federal consulting firms in Indianapolis25
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 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 federal consulting firms are there based in Mclean, United States?
RevenueBase identified 65 federal consulting firms headquartered in Mclean, 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?
Attain Partners, headquartered in Mclean, tops this list with the largest team on record.
Which city has the most federal consulting firms?
Washington leads with 361 headquartered companies, followed by Arlington (136) and Atlanta (109).
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 617 verified decision-maker contacts tracked across these 65 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 14, 2026.
Ready to reach these companies? Verified emails and direct dials for all 65 federal consulting firms based in Mclean, United States. Start with a free account, no credit card.
Download this list →Related lists
Federal consulting firms by geography
- Federal consulting firms based in the United States
- Federal consulting firms based in the United Kingdom
- Federal consulting firms based in France
- Federal consulting firms based in Brazil
- Federal consulting firms based in Canada
- Federal consulting firms based in Australia
- Federal consulting firms based in Germany
- Federal consulting firms based in Italy
- Federal consulting firms based in Spain
- Federal consulting firms based in Mexico
- Federal consulting firms based in the Netherlands
- Federal consulting firms based in Belgium
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Federal consulting firms based in the United States
- Federal consulting firms based in the United Kingdom
- Federal consulting firms based in France
- Federal consulting firms based in Brazil
- Federal consulting firms based in Canada
- Federal consulting firms based in Australia