Company lists · Data refreshed September 2026

Top 25 Nonprofit organization management companies based in Washington, United States

Name: Nonprofit organization management companies based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 106 companies tracked

RevenueBase identified 106 nonprofit organization management companies headquartered in Washington, United States as of September 2026 and tracks 1,248 professional contacts across them, including 723 with verified work emails. New York is the largest hub.

This list covers nonprofit organization management companies headquartered in Washington, 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 20, 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 20, 2026 86% judged on-target in blind review

106Companies

1,248Contacts tracked

723Verified emails

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The 25 largest nonprofit organization management companies based in Washington, United States

Ranked by team size

Top 25 of 106 nonprofit organization management companies based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to nonprofit organization management companies: 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	Arabella Advisors	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 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 20, 2026
2	M R	Indirect evidence	Washington, United StatesHQ checked Sep 20, 2026	51-200	208 contacts →
	Indirect evidence “We are M+R.” Source: RevenueBase Database · checked Sep 20, 2026
3	ORR Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	99 contacts →
	Partial evidence “Orr Group was born out of a need for event management and fundraising support in the philanthropic sector.” Source: RevenueBase Database · checked Sep 20, 2026
4	Raffa, PC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1,001-5,000	87 contacts →
	Indirect evidence “Top accounting firm Raffa, P.C.” Source: RevenueBase Database · checked Sep 20, 2026
5	Avalon Consulting Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	74 contacts →
	Partial evidence “Avalon is a full-service fundraising consulting agency helping nonprofits realize the full potential of their direct marketing programs through multi-channel fundraising…” Source: RevenueBase Database · checked Sep 20, 2026
6	Lautman Maska Neill & Company	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	64 contacts →
	Partial evidence “Lautman Maska Neill & Company is an award-winning direct response consulting firm specializing in fully-integrated fundraising exclusively for nonprofits.” Source: RevenueBase Database · checked Sep 20, 2026
7	Freedman Consulting, LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	61 contacts →
	Strong evidence “Freedman Consulting, LLC, a mission-driven firm, offers strategic consulting services to foundations, nonprofit organizations, and public interest coalitions, advising many of the…” Source: RevenueBase Database · checked Sep 20, 2026
8	Elevate Smart Grants For Powerful Social Change	Strong evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	51-200	55 contacts →
	Strong evidence “Elevate is a woman-owned and woman-led business established to help nonprofit organizations of all sizes build, sustain, and grow effective grant programs.” Source: RevenueBase Database · checked Sep 20, 2026
9	Wcdc INC	Strong evidence	Washington, IA, United StatesHQ checked Sep 20, 2026	51-200	26 contacts →
	Strong evidence “WCDC Inc is a Non-profit Organization Management company located in 1425 W 5th St, Washington, IA, United States.” Source: RevenueBase Database · checked Sep 20, 2026
10	High Impact Partners HIP	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	21 contacts →
	Partial evidence “Management Consulting Firm * info@hipimpact.com.” Source: RevenueBase Database · checked Sep 20, 2026
11	Quatt Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	19 contacts →
	Indirect evidence “Quatt Associates, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
12	JON Thomas Consulting	Strong evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	19 contacts →
	Strong evidence “Jon Thomas Consulting supports the development activities, business needs, government affairs, and fundraising efforts of nonprofits, associations, and other organizations.” Source: RevenueBase Database · checked Sep 20, 2026
13	Spark Point Fundraising	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	14 contacts →
	Partial evidence “Spark Point is the resource that nonprofits are hungry for – a thought partner to guide them to an easily implemented, sustainable fundraising strategy and an experienced grant…” Source: RevenueBase Database · checked Sep 20, 2026
14	Bernuth & Williamson	Strong evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	13 contacts →
	Strong evidence “Bernuth & Williamson provides consulting services in the areas of strategy, change management, and organizational development to leading nonprofits, foundations, associations, and…” Source: RevenueBase Database · checked Sep 20, 2026
15	Capital Association Management CAM	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	12 contacts →
	Partial evidence “CAM is an AMCI-accredited full-service association management company, dedicated to helping associations and their members reach their full potential, achieve their goals and lead…” Source: RevenueBase Database · checked Sep 20, 2026
16	Abundance Strategies	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	11 contacts →
	Partial evidence “For more than ten years, Abundance Strategies (formerly KG Consulting) has been empowering nonprofits to embrace a culture of abundance and helping them to raise millions of…” Source: RevenueBase Database · checked Sep 20, 2026
17	Thread Strategies	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	11 contacts →
	Partial evidence “Thread Strategies is a woman-led fundraising consulting firm that specializes in supporting small nonprofits.” Source: RevenueBase Database · checked Sep 20, 2026
18	First Priority Management	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	11 contacts →
	Partial evidence “First Priority Management provides property management services.” Source: RevenueBase Database · checked Sep 20, 2026
19	Fundraise INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	8 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
20	Blochreed Association Advisors	Strong evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	8 contacts →
	Strong evidence “At BlochReed, a Vetted Solutions Company, we believe that effective associations and nonprofit organizations can change the world.” Source: RevenueBase Database · checked Sep 20, 2026
21	The Consonance Group	Strong evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	4 contacts →
	Strong evidence “The Consonance Group (TCG) provides bookkeeping, human resources, and financial management services to a wide range of nonprofit and small for-profit businesses.” Source: RevenueBase Database · checked Sep 20, 2026
22	Mevvn, LLC	Strong evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	4 contacts →
	Strong evidence “mevvn, LLC provides management consulting services to support organizational leaders in nonprofits, startups and small businesses.” Source: RevenueBase Database · checked Sep 20, 2026
23	GBG Give Better Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	3 contacts →
	Partial evidence “In 2018, GBG was formed to support organizations in the non-profit, philanthropic, and government sectors looking to propel their work forward and make the biggest impact possible.” Source: RevenueBase Database · checked Sep 20, 2026
24	Penchina Partners	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “We are Penchina Partners.” Source: RevenueBase Database · checked Sep 20, 2026
25	Dicam Strategic Solutions	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “DiCam is focused on bringing NPO and for-profit partnerships together for sustained social change that impact the health and wealth of underserved communities and Black and Brown…” Source: RevenueBase Database · checked Sep 20, 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 organization management companies. 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 organization management companies.
Partial evidence: Its own public description names part of nonprofit organization management companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name nonprofit organization management companies. 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 106 nonprofit organization management companies based in Washington, United States

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Nonprofit organization management companies based in Washington, United States at a glance

As of Sep 20, 2026

57.9%Verified-email coverage

11.8Average contacts per company

1-10Median size (employees)

142.5%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 106 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 organization management companies, 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 Washington, United States whose own description of what they do matches “nonprofit organization management companies”. 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 organization management companies), 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 organization management companies, and records with no verified work email. Companies headquartered outside Washington 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, 723 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 20, 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 organization management companies by metro in the United States

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 organization management companies, 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 organization management companies are there based in Washington, United States?

RevenueBase identified 106 nonprofit organization management companies headquartered in Washington, 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?

Arabella Advisors, headquartered in Washington, tops this list with the largest team on record.

Which city has the most nonprofit organization management companies?

New York leads with 151 headquartered companies, followed by Chicago (134) and Washington (106).

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 723 verified decision-maker contacts tracked across these 106 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 20, 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.