Company lists · Data refreshed September 2026

Top 25 Nonprofit consulting agencies based in the United States

Name: Nonprofit consulting agencies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 4,995 companies tracked

RevenueBase identified 4,995 nonprofit consulting agencies headquartered in the United States as of September 2026 and tracks 38,730 professional contacts across them, including 10,420 with verified work emails. New York is the largest hub.

This list covers nonprofit consulting agencies 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

4,995Companies

38,730Contacts tracked

10,420Verified emails

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The 25 largest nonprofit consulting agencies based in the United States

Ranked by team size

Top 25 of 4,995 nonprofit consulting agencies 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 nonprofit consulting agencies: 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	Bank Of The West	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	n/a	4,751 contacts →
	Partial evidence “We help businesses and nonprofits grow, communicate, and succeed, professionally and affordably.” Source: RevenueBase Database · checked Sep 29, 2026
2	Your Part-Time Controller, LLC	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 29, 2026	501-1,000	775 contacts →
	Partial evidence “THE NONPROFIT ACCOUNTING SPECIALISTS.” Source: RevenueBase Database · checked Sep 29, 2026
3	Lucas Group	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	10001+	756 contacts →
	Strong evidence “Ultimate Minds is a professional consulting and marketing firm dedicated to empowering businesses, nonprofits, and startups with smart, affordable, and results-driven solutions.” Source: RevenueBase Database · checked Sep 29, 2026
4	CCS Fundraising	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	501-1,000	728 contacts →
	Indirect evidence “For over 75 years, CCS Fundraising has empowered many of the world’s greatest organizations to advance some of the most important causes in history.” Source: RevenueBase Database · checked Sep 29, 2026
5	Nonprofit Hr, Powered By Onedigital	Partial evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	10001+	300 contacts →
	Partial evidence “Nonprofit HR was founded with one goal in mind: to strengthen the social impact sector by strengthening its people.” Source: RevenueBase Database · checked Sep 29, 2026
6	JCA	Strong evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	n/a	265 contacts →
	Strong evidence “JCA is the first and foremost independent consulting firm dedicated to addressing the technology and operational needs of nonprofits.” Source: RevenueBase Database · checked Sep 29, 2026
7	Capincrouse	Partial evidence	Indianapolis, IN, United StatesHQ checked Sep 29, 2026	51-200	262 contacts →
	Partial evidence “As a national full-service accounting and advisory firm exclusively serving nonprofit organizations, CapinCrouse provides professional solutions to organizations whose outcomes…” Source: RevenueBase Database · checked Sep 29, 2026
8	TCC Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	n/a	232 contacts →
	Indirect evidence “TCC Group collaborates with leaders to solve complex social problems.” Source: RevenueBase Database · checked Sep 29, 2026
9	Arabella Advisors	Partial evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	201-500	227 contacts →
	Partial evidence “Arabella Advisors is a professional services firm that provides administrative, operational, and strategic support to nonprofits, foundations, and individual donors.” Source: RevenueBase Database · checked Sep 29, 2026
10	Nonprofit Finance Fund	Strong evidence	New York, NY, United StatesHQ checked Sep 29, 2026	51-200	212 contacts →
	Strong evidence “Financing for nonprofits https://nff.org/our-work/financing/#Consulting for nonprofits https://nff.org/our-work/consulting/#Partnerships with funders and networks…” Source: RevenueBase Database · checked Sep 29, 2026
11	M R	Indirect evidence	Washington, United StatesHQ checked Sep 29, 2026	51-200	208 contacts →
	Indirect evidence “We are M+R.” Source: RevenueBase Database · checked Sep 29, 2026
12	Harvard Undergraduate Consulting Group	Strong evidence	Cambridge, MA, United StatesHQ checked Sep 29, 2026	51-200	144 contacts →
	Strong evidence “Harvard Undergraduate Consulting Group is a nonprofit student organization at Harvard dedicated to helping businesses grow and achieve their strategic goals.” Source: RevenueBase Database · checked Sep 29, 2026
13	Amphil	Partial evidence	Oak Park, IL, United StatesHQ checked Sep 29, 2026	51-200	136 contacts →
	Partial evidence “AmPhil exists to promote the art of civil association by helping philanthropists, charitable foundations, and nonprofit organizations grow and flourish through practical guidance…” Source: RevenueBase Database · checked Sep 29, 2026
14	The Acceleration Project	Partial evidence	Scarsdale, NY, United StatesHQ checked Sep 29, 2026	11-50	131 contacts →
	Partial evidence “The Acceleration Project (TAP) is a nonprofit organization with a mission to unlock pathways to wealth creation and economic mobility by accelerating under-resourced small…” Source: RevenueBase Database · checked Sep 29, 2026
15	BWF	Strong evidence	Usa, United StatesHQ checked Sep 29, 2026	51-200	125 contacts →
	Strong evidence “BWF Zuri is the nonprofit sector’s most comprehensive fundraising consulting company, helping organizations thrive in a rapidly changing landscape.” Source: RevenueBase Database · checked Sep 29, 2026
16	Emergent Method	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 29, 2026	51-200	125 contacts →
	Partial evidence “Emergent Method is a nationally recognized management consulting firm focused on developing and implementing plans, programs, and initiatives that result in transformative impact.” Source: RevenueBase Database · checked Sep 29, 2026
17	Mcking Consulting	Strong evidence	Fairfax, VA, United StatesHQ checked Sep 29, 2026	51-200	118 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
18	JMT Consulting	Partial evidence	Mount Juliet, TN, United StatesHQ checked Sep 29, 2026	51-200	112 contacts →
	Partial evidence “Our number one priority at JMT is to empower nonprofits to achieve their mission through optimized systems and processes.” Source: RevenueBase Database · checked Sep 29, 2026
19	Zuri Group	Partial evidence	Bend, OR, United StatesHQ checked Sep 29, 2026	51-200	106 contacts →
	Partial evidence “Zuri Group partners with nonprofit organizations to turn big ideas into reality.” Source: RevenueBase Database · checked Sep 29, 2026
20	Campbell & Company	Strong evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	102 contacts →
	Strong evidence “Campbell & Company is a national nonprofit consulting firm that helps organizations create greater impact through fundraising, communications and strategic information services.” Source: RevenueBase Database · checked Sep 29, 2026
21	Hilltop Consultants	Partial evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	11-50	101 contacts →
	Partial evidence “Hilltop Consultants is a consulting organization entirely run by Georgetown University undergraduates that executes and leads 6-7 strategy consulting projects each semester for…” Source: RevenueBase Database · checked Sep 29, 2026
22	ORR Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	51-200	99 contacts →
	Indirect evidence “Orr Group was born out of a need for event management and fundraising support in the philanthropic sector.” Source: RevenueBase Database · checked Sep 29, 2026
23	Raffa, PC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 29, 2026	1,001-5,000	87 contacts →
	Indirect evidence “Top accounting firm Raffa, P.C.” Source: RevenueBase Database · checked Sep 29, 2026
24	Rios Partners	Partial evidence	Arlington, VA, United StatesHQ checked Sep 29, 2026	51-200	86 contacts →
	Partial evidence “Rios Partners provides management consulting services to commercial, non-profit, and government clients in the Washington, D.C.” Source: RevenueBase Database · checked Sep 29, 2026
25	Schultz & Williams	Strong evidence	Philadelphia, PA, United StatesHQ checked Sep 29, 2026	51-200	83 contacts →
	Strong evidence “Schultz & Williams is a national consulting firm dedicated to helping nonprofits of all types and sizes achieve financial stability, meet organizational goals, and support greater…” Source: RevenueBase Database · checked Sep 29, 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: nonprofit consulting agencies. 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 nonprofit consulting agencies.
Partial evidence: Its own public description names part of nonprofit consulting agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name nonprofit consulting agencies. 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 4,995 nonprofit consulting agencies based in the United States

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Nonprofit consulting agencies based in the United States at a glance

As of Sep 29, 2026

26.9%Verified-email coverage

7.8Average contacts per company

1-10Median size (employees)

4.3%Largest-city concentration · New York

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

4,388

11-50

499

51-200

201-500

501-1,000

1,001-5,000

10001+

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 4,995 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 nonprofit consulting agencies, 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 “nonprofit consulting agencies”. 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 nonprofit consulting agencies), 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 nonprofit consulting agencies, 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, 10,420 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.

Nonprofit consulting agencies 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 nonprofit consulting agencies, 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 nonprofit consulting agencies are there based in the United States?

RevenueBase identified 4,995 nonprofit consulting agencies 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?

Bank Of The West, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most nonprofit consulting agencies?

New York leads with 215 headquartered companies, followed by Washington (196) and Chicago (176).

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 10,420 verified decision-maker contacts tracked across these 4,995 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.