Company lists · Data refreshed September 2026

Top 25 Impact measurement consulting firms based in the United States

Name: Impact measurement consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 2,470 companies tracked

RevenueBase identified 2,470 impact measurement consulting firms headquartered in the United States as of September 2026 and tracks 19,822 professional contacts across them, including 5,661 with verified work emails and 7,423 with mobile numbers. New York is the largest hub.

This list covers impact measurement 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 3, 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 HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

2,470Companies

19,822Contacts tracked

5,661Verified emails

7,423Mobile numbers

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The 25 largest impact measurement consulting firms based in the United States

Ranked by team size

Top 25 of 2,470 impact measurement consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names impact measurement consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Bank Of The WestIndirect evidence	Chicago, IL, United StatesHQ checked Sep 3, 2026	n/a	4,790
	“We help businesses and nonprofits grow, communicate, and succeed, professionally and affordably.” Source: company website · checked Sep 3, 2026
2	FROGIndirect evidence	San Francisco, CA, United StatesHQ checked Sep 3, 2026	1,001-5,000	1,746
	“frog is the reinvention and experience partner for the eco-digital era.” Source: company website · checked Sep 3, 2026
3	Lucas GroupPartial evidence	Los Angeles, CA, United StatesHQ checked Sep 3, 2026	10001+	765
	“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 3, 2026
4	SSA ConsultantsIndirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 3, 2026	n/a	259
	“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 3, 2026
5	TCC GroupIndirect evidence	New York, NY, United StatesHQ checked Sep 3, 2026	n/a	230
	“TCC Group collaborates with leaders to solve complex social problems.” Source: company website · checked Sep 3, 2026
6	MedialinkPartial evidence	Beverly Hills, NY, United StatesHQ checked Sep 3, 2026	51-200	205
	“MediaLink is the leading consulting firm serving the media and marketing industry’s C-suite.” Source: company website · checked Sep 3, 2026
7	Good CompanyPartial evidence	Washington, DC, United StatesHQ checked Sep 3, 2026	n/a	186
	“Founded in 2006, Good Company is a social impact consultancy specializing in innovative, collaborative marketing, partnerships and communications strategies with purpose.” Source: company website · checked Sep 3, 2026
8	Ks&rIndirect evidence	Syracuse, NY, United StatesHQ checked Sep 3, 2026	51-200	176
	“KS & R is a nationally recognized strategic consultancy and marketing research firm that provides clients with timely, fact-based insights and actionable solutions through…” Source: company website · checked Sep 3, 2026
9	Cicero , Part Of MGTPartial evidence	Salt Lake City, UT, United StatesHQ checked Sep 3, 2026	51-200	149
	“Cicero® is a premier management consulting firm focused on implementing data-driven strategies for a broad mix of private, public, and social sector organizations across the globe.” Source: company website · checked Sep 3, 2026
10	Devtech Systems, INCPartial evidence	Arlington, VA, United StatesHQ checked Sep 3, 2026	11-50	139
	“DevTech Systems, Inc.(DevTech) is an international consulting firm that delivers data-driven intelligence that de-risks investment, strengthens public finance, and supports…” Source: company website · checked Sep 3, 2026
11	Emergent MethodStrong evidence	Baton Rouge, LA, United StatesHQ checked Sep 3, 2026	51-200	126
	“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 3, 2026
12	SummitPartial evidence	Washington, DC, United StatesHQ checked Sep 3, 2026	51-200	120
	“Summit is a quantitative consulting and data analytics firm that works with public and commercial clients to turn data into actionable intelligence.” Source: company website · checked Sep 3, 2026
13	ORB InternationalIndirect evidence	Charlottesville, VA, United StatesHQ checked Sep 3, 2026	51-200	116
	“Opinion Research Business International (ORB) is a full-service monitoring, evaluation, research, and analysis firm with experience in 120+ countries around the world.” Source: company website · checked Sep 3, 2026
14	Zuri GroupIndirect evidence	Bend, OR, United StatesHQ checked Sep 3, 2026	51-200	106
	“Zuri Group partners with nonprofit organizations to turn big ideas into reality.” Source: company website · checked Sep 3, 2026
15	Campbell & CompanyStrong evidence	Chicago, WA, United StatesHQ checked Sep 3, 2026	51-200	102
	“Campbell & Company is a national nonprofit consulting firm that helps organizations create greater impact through fundraising, communications and strategic information services.” Source: company website · checked Sep 3, 2026
16	KeadjianIndirect evidence	Walnut Creek, CA, United StatesHQ checked Sep 3, 2026	51-200	96
	“It begins with a story.” Source: company website · checked Sep 3, 2026
17	ResonanceIndirect evidence	Burlington, VT, United StatesHQ checked Sep 3, 2026	51-200	96
	“At Resonance, we help our clients unlock opportunity in frontier markets by designing action-based strategies, forging strategic partnerships, and executing across sector…” Source: company website · checked Sep 3, 2026
18	M A R C ResearchPartial evidence	Plano, TX, United StatesHQ checked Sep 3, 2026	51-200	94
	“M/A/R/C® Research is a consulting firm providing insights and strategies to empower clients worldwide with the clarity to move forward with confidence.” Source: company website · checked Sep 3, 2026
19	Rios PartnersPartial evidence	Arlington, VA, United StatesHQ checked Sep 3, 2026	51-200	87
	“Rios Partners provides management consulting services to commercial, non-profit, and government clients in the Washington, D.C.” Source: company website · checked Sep 3, 2026
20	Third PlateauPartial evidence	San Francisco, CA, United StatesHQ checked Sep 3, 2026	51-200	86
	“One of Fast Company's 2025 Best Workplaces for Innovators!* Third Plateau is an impact consultancy on a mission to build lasting social good.” Source: company website · checked Sep 3, 2026
21	Schultz & WilliamsPartial evidence	Philadelphia, PA, United StatesHQ checked Sep 3, 2026	51-200	82
	“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: company website · checked Sep 3, 2026
22	PyrovioIndirect evidence	Ann Arbor, MI, United StatesHQ checked Sep 3, 2026	51-200	80
	“We translate strategy into long-term, sustainable, and measurable results by using our three-tier approach: Strategy, Capability and Execution.” Source: company website · checked Sep 3, 2026
23	The Cloudburst GroupIndirect evidence	Landover, MD, United StatesHQ checked Sep 3, 2026	51-200	80
	“At The Cloudburst Group, our mission is to improve programs that benefit socially and economically disadvantaged persons in the U.S.” Source: company website · checked Sep 3, 2026
24	NationswellPartial evidence	NY, United StatesHQ checked Sep 3, 2026	11-50	80
	“NationSwell is the only membership community for senior impact leaders that combines full-service advisory support, award-winning storytelling, and a curated network of…” Source: company website · checked Sep 3, 2026
25	S.I.RIndirect evidence	Richmond, VA, United StatesHQ checked Sep 3, 2026	11-50	66
	Source: company website · checked Sep 3, 2026

Showing 25 of 2,470 impact measurement consulting firms based in the United States

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Impact measurement consulting firms based in the United States at a glance

As of Sep 3, 2026

1-10Median size (employees)

New YorkLargest hub · 177 HQs

7,423Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

2,106

11-50

313

51-200

201-500

501-1,000

1,001-5,000

10001+

Verified emails by last verification

0–30

31–60

432

61–90

3,105

90–180

2,062

180+

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 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 “impact measurement 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 impact measurement 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, 5,661 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 3, 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 consulting firms by metro

Frequently asked

How many impact measurement consulting firms are there based in the United States?

RevenueBase identified 2,470 impact measurement 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 impact measurement consulting firms?

New York leads with 177 headquartered companies, followed by Washington (128) and Chicago (98).

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 5,661 verified decision-maker contacts tracked across these 2,470 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 3, 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.