Company lists · Data refreshed September 2026

Top 25 Membership organization consultants based in the United States

Name: Membership organization consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 7,693 companies tracked

RevenueBase identified 7,693 membership organization consultants headquartered in the United States as of September 2026 and tracks 52,166 professional contacts across them, including 14,344 with verified work emails. New York is the largest hub.

This list covers membership organization consultants 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 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

7,693Companies

52,166Contacts tracked

14,344Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest membership organization consultants based in the United States

Ranked by team size

Top 25 of 7,693 membership organization consultants based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to membership organization 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	Lucas Group	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	10001+	756 contacts →
	Indirect 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 20, 2026
2	Smithbucklin	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	501-1,000	720 contacts →
	Indirect evidence “Associations help industries, fields and professions stay current and connected for the members and communities who depend on them.” Source: RevenueBase Database · checked Sep 20, 2026
3	Clark Schaefer Hackett	Indirect evidence	Dayton, OH, United StatesHQ checked Sep 20, 2026	501-1,000	683 contacts →
	Indirect evidence “Clark Schaefer Hackett is more than an accounting and advisory firm; we’re striving to be your most valued advisor.” Source: RevenueBase Database · checked Sep 20, 2026
4	ERG	Indirect evidence	Concord, MA, United StatesHQ checked Sep 20, 2026	501-1,000	663 contacts →
	Indirect evidence “ERG is a multidisciplinary consulting firm offering a broad range of professional services.” Source: RevenueBase Database · checked Sep 20, 2026
5	GSA National	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 20, 2026	201-500	558 contacts →
	Indirect evidence “GSA National has been helping government contractors ensure compliance and streamline costs since 1991.” Source: RevenueBase Database · checked Sep 20, 2026
6	Executive Director, INC	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 20, 2026	201-500	543 contacts →
	Indirect evidence “EDI is a top company in association management, providing professional services for national and international medical, certification, and scientific associations.” Source: RevenueBase Database · checked Sep 20, 2026
7	LIMRA	Partial evidence	Windsor, CT, United StatesHQ checked Sep 20, 2026	201-500	410 contacts →
	Partial evidence “LIMRA is a worldwide research, consulting, and professional development organization that helps more than 600 insurance and financial services companies in 73 countries increase…” Source: RevenueBase Database · checked Sep 20, 2026
8	Drummond Advisors	Indirect evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	201-500	322 contacts →
	Indirect evidence “Drummond Advisors provides global consulting services to companies focusing on accounting, tax, legal and business development.” Source: RevenueBase Database · checked Sep 20, 2026
9	NCM Associates	Indirect evidence	Kansas City, MO, United StatesHQ checked Sep 20, 2026	201-500	321 contacts →
	Indirect evidence “The employee-owners of NCM® Associates help thousands of dealerships throughout North America enhance profitability through a unique combination of state-of-the-art business…” Source: RevenueBase Database · checked Sep 20, 2026
10	Nonprofit Hr, Powered By Onedigital	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	10001+	300 contacts →
	Indirect 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
11	JCA	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 20, 2026	n/a	265 contacts →
	Indirect 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 20, 2026
12	SSA Consultants	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 20, 2026	n/a	258 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 20, 2026
13	Scottmadden, INC	Indirect evidence	Raleigh, NC, United StatesHQ checked Sep 20, 2026	201-500	244 contacts →
	Indirect evidence “ScottMadden is a management consulting firm that does what it takes to get the job done right.” Source: RevenueBase Database · checked Sep 20, 2026
14	Cogent Analytics	Indirect evidence	Greensboro, NC, United StatesHQ checked Sep 20, 2026	201-500	233 contacts →
	Indirect evidence “Cogent Analytics is a business management consulting firm committed to serving the small to mid-sized business community.” Source: RevenueBase Database · checked Sep 20, 2026
15	VTM Group	Indirect evidence	Beaverton, OR, United StatesHQ checked Sep 20, 2026	51-200	221 contacts →
	Indirect evidence “VTM Group is the industry-leading, single source for launching, managing and promoting standard setting alliances, initiatives, and collaborative programs in the technology…” Source: RevenueBase Database · checked Sep 20, 2026
16	Kellen	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	201-500	217 contacts →
	Partial evidence “Kellen stands as a global leader in providing management and services to professional and trade organizations.” Source: RevenueBase Database · checked Sep 20, 2026
17	Virtual, INC	Strong evidence	Wakefield, MA, United StatesHQ checked Sep 20, 2026	201-500	181 contacts →
	Strong evidence “Virtual is a top provider of professional services for associations, consortia and other membership-based organizations, delivering tailored management solutions that drive…” Source: RevenueBase Database · checked Sep 20, 2026
18	Association Management Center	Indirect evidence	Schaumburg, IL, United StatesHQ checked Sep 20, 2026	201-500	169 contacts →
	Indirect evidence “Associations are all about passion and dedication.” Source: RevenueBase Database · checked Sep 20, 2026
19	YCC	Partial evidence	Wilmington, NC, United StatesHQ checked Sep 20, 2026	n/a	166 contacts →
	Partial evidence “Your Conference Connection (YCC) offers a kaleidoscope of services to fulfill your organization's conference, association management, and or service-based needs.” Source: RevenueBase Database · checked Sep 20, 2026
20	CREW	Indirect evidence	Philadelphia, MN, United StatesHQ checked Sep 20, 2026	1,001-5,000	165 contacts →
	Indirect evidence “Founded in tandem with Turnberry Solutions, Crew serves as an innovative talent development program for both Turnberry and our clients by focusing exclusively on high-performing…” Source: RevenueBase Database · checked Sep 20, 2026
21	ITAC	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	n/a	150 contacts →
	Partial evidence “ITAC is a leading consulting organization located in New York City.” Source: RevenueBase Database · checked Sep 20, 2026
22	FW Cook	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	51-200	145 contacts →
	Indirect evidence “From the beginning, Frederic W.” Source: RevenueBase Database · checked Sep 20, 2026
23	Harvard Undergraduate Consulting Group	Partial evidence	Cambridge, MA, United StatesHQ checked Sep 20, 2026	51-200	144 contacts →
	Partial 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 20, 2026
24	Rvk, INC	Indirect evidence	Portland, OR, United StatesHQ checked Sep 20, 2026	51-200	139 contacts →
	Indirect evidence “RVK is a national firm with headquarters in Portland, OR and regional offices in Boise, ID; Chicago, IL; and New York, NY.” Source: RevenueBase Database · checked Sep 20, 2026
25	Datics INC	Indirect evidence	Plainfield, IL, United StatesHQ checked Sep 20, 2026	51-200	128 contacts →
	Indirect evidence “Datics Inc is passionate about seeking ever better synergy with our clients.” 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: membership organization 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 membership organization consultants.
Partial evidence: Its own public description names part of membership organization consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name membership organization 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 7,693 membership organization consultants based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 14,344 reachable decision-makers.

Free signup · no credit card

View the full list →

Membership organization consultants based in the United States at a glance

As of Sep 20, 2026

27.5%Verified-email coverage

6.8Average contacts per company

1-10Median size (employees)

3.5%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

5,907

11-50

1,385

51-200

283

201-500

501-1,000

1,001-5,000

5,001-10,000

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 7,693 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 membership organization 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 the United States whose own description of what they do matches “membership organization 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 membership organization 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 membership organization consultants, 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, 14,344 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.

Membership organization consultants 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 membership organization 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 membership organization consultants are there based in the United States?

RevenueBase identified 7,693 membership organization consultants 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?

Lucas Group, headquartered in Los Angeles, tops this list with the largest team on record.

Which city has the most membership organization consultants?

New York leads with 269 headquartered companies, followed by Chicago (200) and Washington (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 14,344 verified decision-maker contacts tracked across these 7,693 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.

Ready to reach these companies? Verified emails and direct dials for all 7,693 membership organization consultants based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Membership organization consultants by geography

Browse the directory

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.