Company lists · Data refreshed September 2026
Top 25 Nonprofit consulting firms based in the United States
RevenueBase identified 6,245 nonprofit consulting firms headquartered in the United States as of September 2026 and tracks 39,361 professional contacts across them, including 13,048 with verified work emails and 17,338 with mobile numbers. New York is the largest hub.
This list covers nonprofit consulting firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 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.
The 25 largest nonprofit consulting firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,751 | ||||
“We help businesses and nonprofits grow, communicate, and succeed, professionally and affordably.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 775 | ||||
“THE NONPROFIT ACCOUNTING SPECIALISTS.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 756 | ||||
“Ultimate Minds is a professional consulting and marketing firm dedicated to empowering businesses, nonprofits, and startups with smart, affordable, and results-driven solutions.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 728 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | Nonprofit Hr, Powered By OnedigitalPartial evidence | 300 | |||
“Nonprofit HR was founded with one goal in mind: to strengthen the social impact sector by strengthening its people.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | JCAStrong evidence | 265 | |||
“JCA is the first and foremost independent consulting firm dedicated to addressing the technology and operational needs of nonprofits.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 262 | ||||
“As a national full-service accounting and advisory firm exclusively serving nonprofit organizations, CapinCrouse provides professional solutions to organizations whose outcomes…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 258 | ||||
“We are partners and advisors of leading organizations and governments, bound to and inspired by a mission of helping our clients improve their performance.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | TCC GroupIndirect evidence | 232 | |||
“TCC Group collaborates with leaders to solve complex social problems.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 227 | ||||
“Arabella Advisors is a professional services firm that provides administrative, operational, and strategic support to nonprofits, foundations, and individual donors.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | Nonprofit Finance FundStrong evidence | 212 | |||
“Financing for nonprofits https://nff.org/our-work/financing/#Consulting for nonprofits https://nff.org/our-work/consulting/#Partnerships with funders and networks…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | M RIndirect evidence | 208 | |||
“We are M+R.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | Ncheng LLPIndirect evidence | 197 | |||
“As certified public accountants and expert financial advisors, we empower non-profits to achieve their mission.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 170 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 150 | ||||
“All In One Accounting is your strategic accounting team dedicated to serving growth-minded entrepreneurs and mission-driven nonprofits by supporting profitable growth, protection…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 144 | ||||
“Harvard Undergraduate Consulting Group is a nonprofit student organization at Harvard dedicated to helping businesses grow and achieve their strategic goals.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 142 | ||||
“Here at Herren, our goals are to drive efficiency and maximize the value of every dollar our clients spend.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 136 | ||||
“AmPhil exists to promote the art of civil association by helping philanthropists, charitable foundations, and nonprofit organizations grow and flourish through practical guidance…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | The Acceleration ProjectPartial evidence | 131 | |||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 125 | ||||
“BWF Zuri is the nonprofit sector’s most comprehensive fundraising consulting company, helping organizations thrive in a rapidly changing landscape.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 125 | ||||
“Emergent Method is a nationally recognized management consulting firm focused on developing and implementing plans, programs, and initiatives that result in transformative impact.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | Mcking ConsultingStrong evidence | 118 | |||
“McKing Consulting Corporation provides a variety of general and specialized management consulting services to the federal government, state agencies, nonprofits, and public and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | MAL Warwick DonordigitalPartial evidence | 112 | |||
“Our team of expert consultants develops innovative direct marketing-driven donor development programs for exceptional nonprofit causes like yours.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 112 | ||||
“Our number one priority at JMT is to empower nonprofits to achieve their mission through optimized systems and processes.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 109 | ||||
“We Make Your Business Operations Comfortable.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 6,245 nonprofit consulting firms based in the United States
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Nonprofit consulting firms based in the United States at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among nonprofit consulting firms, 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 an evidence 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, 13,048 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 5, 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 firms by metro
- Nonprofit consulting firms in New York262
- Nonprofit consulting firms in Washington250
- Nonprofit consulting firms in Chicago193
- Nonprofit consulting firms in Atlanta154
- Nonprofit consulting firms in Los Angeles146
- Nonprofit consulting firms in Seattle101
- Nonprofit consulting firms in Denver90
- Nonprofit consulting firms in Boston85
- Nonprofit consulting firms in Dallas82
- Nonprofit consulting firms in Houston80
- Nonprofit consulting firms in Austin78
- Nonprofit consulting firms in Philadelphia76
- Nonprofit consulting firms in Portland74
- Nonprofit consulting firms in San Francisco69
- Nonprofit consulting firms in Phoenix67
- Nonprofit consulting firms in San Diego65
- Nonprofit consulting firms in Minneapolis53
- Nonprofit consulting firms in Indianapolis51
- Nonprofit consulting firms in Miami49
- Nonprofit consulting firms in Arlington40
- Nonprofit consulting firms in Charlotte38
- Nonprofit consulting firms in Cleveland38
- Nonprofit consulting firms in Nashville38
- Nonprofit consulting firms in Kansas City35
- Nonprofit consulting firms in Alexandria34
- Nonprofit consulting firms in Raleigh34
- Nonprofit consulting firms in Tampa33
- Nonprofit consulting firms in Columbus32
- Nonprofit consulting firms in Detroit32
- Nonprofit consulting firms in Richmond31
- Nonprofit consulting firms in San Antonio31
- Nonprofit consulting firms in Brooklyn29
- Nonprofit consulting firms in Las Vegas29
- Nonprofit consulting firms in Pittsburgh29
- Nonprofit consulting firms in Sacramento29
- Nonprofit consulting firms in New Orleans28
- Nonprofit consulting firms in Baltimore26
- Nonprofit consulting firms in Cincinnati26
- Nonprofit consulting firms in Oakland26
- Nonprofit consulting firms in New York City25
Frequently asked
How many nonprofit consulting firms are there based in the United States?
RevenueBase identified 6,245 nonprofit consulting firms 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 firms?
New York leads with 262 headquartered companies, followed by Washington (250) and Chicago (193).
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 13,048 verified decision-maker contacts tracked across these 6,245 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 5, 2026.
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Nonprofit consulting firms by geography
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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.
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