Company lists · Data refreshed September 2026

Top 25 Impact consulting firms based in Washington, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 937 companies tracked

RevenueBase identified 937 company matches for impact consulting firms associated with Washington, United States as of September 2026 and tracks 20,394 professional contacts across them, including 11,743 with verified work emails. Across the United States, New York is the largest hub for this category (1,952 companies); Washington has 937.

This list covers company matches for impact consulting firms associated with Washington, 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 30, 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 30, 2026 How this list was built

937Companies

20,394Contacts tracked

11,743Verified emails

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The 25 largest impact consulting firms based in Washington, United States

Ranked by team size

Top 25 of 937 company matches for impact consulting firms based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 30, 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	FTI Consulting	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	5,001-10,000	8,964 contacts →
	Exact match “FTI Consulting is the leading global expert firm for organizations facing crisis and transformation, with more than 8,100 employees in 32 countries and territories.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
2	BRG	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	1,001-5,000	2,051 contacts →
	Exact match “BRG combines world-leading academic credentials with world-tested business expertise, purpose-built for agility and connectivity, which sets us apart-and gets our clients ahead.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
3	Gallup	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	1,001-5,000	2,026 contacts →
	Exact match “Gallup delivers analytics and advice to help leaders and organizations solve their most pressing problems.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
4	Kaiser Associates	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	397 contacts →
	Exact match “Kaiser Associates was founded in 1981 with a simple yet powerful mission: to help executives make more informed strategic and operational decisions by incorporating external…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
5	Nonprofit Hr, Powered By Onedigital	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	10001+	300 contacts →
	Exact match “Nonprofit HR was founded with one goal in mind: to strengthen the social impact sector by strengthening its people.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
6	TCG	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	263 contacts →
	Exact match “Traditional we are not.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
7	PSB Insights	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	208 contacts →
	Exact match “PSB Insights is a global research consultancy.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
8	Good Company	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	n/a	186 contacts →
	Exact match “Founded in 2006, Good Company is a social impact consultancy specializing in innovative, collaborative marketing, partnerships and communications strategies with purpose.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
9	Throughline, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	145 contacts →
	Exact match “Throughline specializes in harnessing the power of visual strategy and communications to transform established organizations into adaptive enterprises using design strategy…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
10	Herren Associates	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	142 contacts →
	Exact match “Here at Herren, our goals are to drive efficiency and maximize the value of every dollar our clients spend.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
11	The Konterra Group	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	11-50	140 contacts →
	Exact match “At KonTerra, we support organizations that manage international development, humanitarian and emergency management operations.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
12	Telesolv Consulting	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	201-500	132 contacts →
	Exact match “To become a demand business, an organization must constantly improve the value created by its core business processes.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
13	Summit	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	124 contacts →
	Exact match “Summit is a quantitative consulting and data analytics firm that works with public and commercial clients to turn data into actionable intelligence.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
14	KCIC	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	115 contacts →
	Exact match “KCIC is a consulting firm that helps companies manage their product liabilities.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
15	The Cohen Group	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	110 contacts →
	Exact match “Who We Are A talented team of experts with years of experience in both government and industry, with a passion for finding solutions and a deep understanding of the institutions…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
16	Wikistrat	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	201-500	108 contacts →
	Exact match “Wikistrat operates a global network of subject-matter experts who collaborate on an interactive platform to provide our clients with novel insights.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
17	Corner Alliance	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	95 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
18	Blue Water Thinking	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	91 contacts →
	Exact match “Strategy, Management and Technology Consultancy” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
19	KX Advisors	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	88 contacts →
	Exact match “For more than 40 years, Kx Advisors, part of BGBx Consulting, has provided strategy consulting services to help healthcare executives achieve critical business growth goals.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
20	Censeo Consulting Group	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	84 contacts →
	Exact match “Running an organization and executing plans is hard work.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
21	Willpower Consultation	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	11-50	75 contacts →
	Exact match “Willpower Consultation offers direct solutions for your corporate strategy.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
22	Longevity Consulting	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	71 contacts →
	Exact match “Longevity Consulting is a customer-focused strategic management and IT consulting firm that helps federal agencies achieve mission objectives, improve outcomes, and strengthen…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
23	Gravity Research	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	69 contacts →
	Exact match “Gravity Research empowers organizations to anticipate risk, spot opportunities, and rationalize reputational concerns against a backdrop of evolving public pressures.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
24	Patomak Global Partners	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	65 contacts →
	Exact match “Patomak is a financial services consultancy that provides industry and regulatory expertise, delivers value in an efficient manner, and provides a competitive edge to companies…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase
25	Lautman Maska Neill & Company	Exact match	Washington, DC, United StatesHQ recorded Sep 30, 2026	51-200	64 contacts →
	Exact match “Lautman Maska Neill & Company is an award-winning direct response consulting firm specializing in fully-integrated fundraising exclusively for nonprofits.” Recorded in the RevenueBase company graph · Sep 30, 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 “impact 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 937 impact consulting firms based in Washington, United States

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Impact consulting firms based in Washington, United States at a glance

As of Sep 30, 2026

57.6%Verified-email coverage

21.8Average contacts per company

1-10Median size (employees)

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

694

11-50

187

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 937 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 Washington, United States whose business descriptions match “impact 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 11,743 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 30, 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.

Impact consulting firms by metro in the United States

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

How many impact consulting firms are there based in Washington, United States?

RevenueBase identified 937 company matches for impact consulting firms associated with Washington, 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?

FTI Consulting tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most impact consulting firms?

New York leads the United States with 1,952 company records, followed by Chicago (974) and Washington (937).

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 11,743 professional contacts with verified work emails tracked across these 937 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 30, 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.