Company lists · Data refreshed September 2026

Top 25 Nonprofit management consulting firms based in Washington, United States

Name: Nonprofit management 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 21, 2026 306 companies tracked

RevenueBase identified 306 company matches for nonprofit management consulting firms associated with Washington, United States as of September 2026 and tracks 3,196 professional contacts across them, including 1,399 with verified work emails. Across the United States, New York is the largest hub for this category (373 companies); Washington follows with 306.

This list covers company matches for nonprofit management 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 21, 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 21, 2026 How this list was built

306Companies

3,196Contacts tracked

1,399Verified emails

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The 25 largest nonprofit management consulting firms based in Washington, United States

Ranked by team size

Top 25 of 306 company matches for nonprofit management consulting firms based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	Nonprofit Hr, Powered By Onedigital	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
2	Arabella Advisors	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	201-500	227 contacts →
	Exact match “Arabella Advisors is a professional services firm that provides administrative, operational, and strategic support to nonprofits, foundations, and individual donors.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	M R	Exact match	Washington, United StatesHQ recorded Sep 21, 2026	51-200	208 contacts →
	Exact match “We are M+R.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Mcallister & Quinn	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	51-200	170 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Herren Associates	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
6	Hilltop Consultants	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	101 contacts →
	Exact match “Hilltop Consultants is a consulting organization entirely run by Georgetown University undergraduates that executes and leads 6-7 strategy consulting projects each semester for…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	ORR Group	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	51-200	99 contacts →
	Exact match “Orr Group was born out of a need for event management and fundraising support in the philanthropic sector.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Raffa, PC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	1,001-5,000	87 contacts →
	Exact match “Top accounting firm Raffa, P.C.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Humentum	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	51-200	81 contacts →
	Exact match “Humentum is a global nonprofit that unlocks the strategic power of operating models for social good organizations.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Avalon Consulting Group	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	51-200	74 contacts →
	Exact match “Avalon is a full-service fundraising consulting agency helping nonprofits realize the full potential of their direct marketing programs through multi-channel fundraising…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Georgetown Global Consulting	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	51-200	70 contacts →
	Exact match “Most consulting firms specialize in consulting for either for-profit companies or large multinational non-profits or NGOs.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Lautman Maska Neill & Company	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
13	Freedman Consulting, LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	61 contacts →
	Exact match “Freedman Consulting, LLC, a mission-driven firm, offers strategic consulting services to foundations, nonprofit organizations, and public interest coalitions, advising many of the…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Strategix Management LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	201-500	59 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Elevate Smart Grants For Powerful Social Change	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	51-200	55 contacts →
	Exact match “Elevate is a woman-owned and woman-led business established to help nonprofit organizations of all sizes build, sustain, and grow effective grant programs.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Boardsource	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	53 contacts →
	Exact match “BoardSource envisions a future where the nonprofit community has the leadership to fulfill its purpose and create a just world where all can thrive.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Ward Circle Strategies	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	51-200	52 contacts →
	Exact match “Ward Circle Strategies, Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Frontline Solutions	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	46 contacts →
	Exact match “We are a diverse, Black-owned consulting firm that serves the philanthropic and nonprofit sectors.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Capital Group	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	43 contacts →
	Exact match “Capital Group is a management consulting firm with more than a decade of experience in providing effective and innovative consulting services to public and private sector clients.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Mckinley Advisors	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	32 contacts →
	Exact match “McKinley Advisors, a Smithbucklin company, is an award-winning consulting firm dedicated to accelerating associations' positive impact on the world.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Integral, LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	27 contacts →
	Exact match “Integral is a leading independent analytical consulting firm specializing in servicing the non-profit community.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	High Impact Partners HIP	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	21 contacts →
	Exact match “Management Consulting Firm * info@hipimpact.com.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Quatt Associates	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	11-50	19 contacts →
	Exact match “Quatt Associates, Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Vetted Solutions	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	1-10	16 contacts →
	Exact match “Vetted Solutions is a Washington, DC-based executive search firm specializing in association and nonprofit recruiting and consulting.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Touchdown Strategies	Exact match	Washington, DC, United StatesHQ recorded Sep 21, 2026	1-10	15 contacts →
	Exact match “OUR APPROACH Partner Strong relationships are at the heart of everything we do.” Recorded in the RevenueBase company graph · Sep 21, 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 “nonprofit management 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 306 nonprofit management consulting firms based in Washington, United States

See the full list, filter by size, metro and specialty, and access 1,399 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Nonprofit management consulting firms based in Washington, United States at a glance

As of Sep 21, 2026

43.8%Verified-email coverage

10.4Average contacts per company

1-10Median size (employees)

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

238

11-50

51-200

201-500

1,001-5,000

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 306 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 “nonprofit management 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 1,399 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 21, 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.

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

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

RevenueBase identified 306 company matches for nonprofit management 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?

Nonprofit Hr, Powered By Onedigital 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 nonprofit management consulting firms?

New York leads the United States with 373 company records, followed by Washington (306) and Chicago (237).

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 1,399 professional contacts with verified work emails tracked across these 306 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 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 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.