Company lists · Data refreshed September 2026

Top 25 Impact measurement consultants based in Washington, United States

Name: Impact measurement consultants 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 72 companies tracked

RevenueBase identified 72 impact measurement consultants headquartered in Washington, United States as of September 2026 and tracks 613 professional contacts across them, including 190 with verified work emails. New York is the largest hub.

This list covers impact measurement consultants 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

72Companies

613Contacts tracked

190Verified emails

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The 25 largest impact measurement consultants based in Washington, United States

Ranked by team size

Top 25 of 72 impact measurement consultants 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 impact measurement consultants: 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	Nonprofit Hr, Powered By Onedigital	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 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 20, 2026
2	Freedman Consulting, LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	61 contacts →
	Indirect 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
3	Institute For Development Impact - I4di	Strong evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	37 contacts →
	Strong evidence “The Institute for Development Impact (I4DI) is rethinking impact measurement and learning to shape how organizations invest, operate, and improve.” Source: RevenueBase Database · checked Sep 20, 2026
4	Rising Solutions	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	14 contacts →
	Partial evidence “Rising Solutions supports nonprofits, governments and corporations to launch their new ideas for social impact through innovation strategy, professional facilitation…” Source: RevenueBase Database · checked Sep 20, 2026
5	Bernuth & Williamson	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	13 contacts →
	Indirect 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
6	Bell Creek Consulting	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	12 contacts →
	Partial evidence “Bell Creek Consulting is a growing mission-‐driven firm launched by alumni of top‐tier strategy consultancies.” Source: RevenueBase Database · checked Sep 20, 2026
7	LG Consulting LGC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	9 contacts →
	Indirect evidence “KEY TIME CLIENTS CALL ON US • The CEO and Board Chair get off a call.” Source: RevenueBase Database · checked Sep 20, 2026
8	Captivate Perspectives	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	8 contacts →
	Indirect evidence “Captivate Perspectives provides high quality talents and services to support organizations in achieving maximum and positive results.” Source: RevenueBase Database · checked Sep 20, 2026
9	Eliasson Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	6 contacts →
	Indirect evidence “We bring decades of fundraising, organizational development and marketing and communications background to non-profit and for-profit executive leadership, CEOs, philanthropists…” Source: RevenueBase Database · checked Sep 20, 2026
10	The Jamii Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	5 contacts →
	Indirect evidence “The Jamii Group Approach: Think Big with a Group of Big Thinkers Partnered with today's top disruptive innovators and business pioneers, we have the expert connections and…” Source: RevenueBase Database · checked Sep 20, 2026
11	Grow For Good Strategies	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	3 contacts →
	Partial evidence “Grow for Good Strategies is a boutique consulting firm with the mission of helping social impact companies and organizations successfully scale.” Source: RevenueBase Database · checked Sep 20, 2026
12	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
13	Dicam Strategic Solutions	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	3 contacts →
	Partial 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
14	Snowbird Consulting Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “Snowbird is a professional services firm that helps organizations improve performance management with sustainable results.” Source: RevenueBase Database · checked Sep 20, 2026
15	Leone Solutions Group	Indirect evidence	Washington, United StatesHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “Leone Solutions Group (LSG) helps public institutions and mission-driven organizations turn complexity into clarity and strategy into action.” Source: RevenueBase Database · checked Sep 20, 2026
16	Common Ground Consulting	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	3 contacts →
	Partial evidence “Common Ground Consulting helps mission-driven organizations worldwide accelerate their impact while strengthening the human connections that make change last.” Source: RevenueBase Database · checked Sep 20, 2026
17	The Marigold Effect	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	2 contacts →
	Partial evidence “We use the tools of business consulting, storytelling, and impact investing to help social justice-focused organizations grow.” Source: RevenueBase Database · checked Sep 20, 2026
18	Gilded Knight Consulting	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	2 contacts →
	Partial evidence “Gilded Knight Consulting is a social impact and management consulting agency that is focused on helping organizations and leaders throughout the private, non-profit and social…” Source: RevenueBase Database · checked Sep 20, 2026
19	Kallan Strategic Partners, LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	2 contacts →
	Indirect evidence “Strategic, operations and organization development consulting for businesses and nonprofit organizations.” Source: RevenueBase Database · checked Sep 20, 2026
20	True Panacea, LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	2 contacts →
	Indirect evidence “True Panacea, LLC provides high quality, timely, and courteous services to international development organizations in monitoring and evaluation (M&E), program management, program…” Source: RevenueBase Database · checked Sep 20, 2026
21	Miller-Muro Consulting LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	1 contacts →
	Partial evidence “We enable leaders and organizations to maximize their success while making a positive impact in the world through the following services: Leadership Advising: We support public…” Source: RevenueBase Database · checked Sep 20, 2026
22	Common Threads Consulting	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	1 contacts →
	Partial evidence “I provide consulting and research for foundations, donors, and impact investors interested in exploring new fields, understanding the landscape, conducting strategic planning, or…” Source: RevenueBase Database · checked Sep 20, 2026
23	ALL Rights Advisors	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	1 contacts →
	Partial evidence “All Rights Advisors is an independent consultancy led by deep subject matter experts.” Source: RevenueBase Database · checked Sep 20, 2026
24	Akhandataa Solutions For Impact	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	1 contacts →
	Partial evidence “AKHANDATAA is in the business of creating, evaluating, and fostering SOLUTIONS FOR IMPACT with INTEGRITY.” Source: RevenueBase Database · checked Sep 20, 2026
25	The Policy Strategy Collaborative	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	1-10	1 contacts →
	Indirect evidence “We are a boutique consulting firm that supports nonprofits and mission-driven organizations and leaders.” 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: impact measurement consultants. 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 impact measurement consultants.
Partial evidence: Its own public description names part of impact measurement consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name impact measurement consultants. 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 72 impact measurement consultants based in Washington, United States

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Impact measurement consultants based in Washington, United States at a glance

As of Sep 20, 2026

31.0%Verified-email coverage

8.5Average contacts per company

1-10Median size (employees)

125.0%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 72 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 impact measurement consultants, 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 “impact measurement consultants”. 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 impact measurement consultants), 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 impact measurement consultants, 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, 190 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.

Impact measurement consultants by metro in the United States

Impact measurement consultants in New York90
Impact measurement consultants in Chicago73
Impact measurement consultants in Washington72
Impact measurement consultants in Los Angeles49
Impact measurement consultants in Atlanta37
Impact measurement consultants in Seattle35
Impact measurement consultants in Denver32
Impact measurement consultants in San Francisco27

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 impact measurement consultants, 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 impact measurement consultants are there based in Washington, United States?

RevenueBase identified 72 impact measurement consultants 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?

Nonprofit Hr, Powered By Onedigital, headquartered in Washington, tops this list with the largest team on record.

Which city has the most impact measurement consultants?

New York leads with 90 headquartered companies, followed by Chicago (73) and Washington (72).

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 190 verified decision-maker contacts tracked across these 72 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.