Company lists · Data refreshed September 2026

Top 25 Community engagement organizations based in the United States

RevenueBase identified 1,319 community engagement organizations headquartered in the United States as of September 2026 and tracks 13,538 professional contacts across them, including 3,622 with verified work emails. Chicago is the largest hub.

This list covers community engagement organizations 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 19, 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 19, 2026 86% judged on-target in blind review
1,319Companies
13,538Contacts tracked
3,622Verified emails
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The 25 largest community engagement organizations based in the United States

Ranked by team size
Top 25 of 1,319 community engagement organizations based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to community engagement organizations: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidencePortsmouth, NH, United StatesHQ checked Sep 19, 2026n/a460 contacts →

Strong evidence

“365 Media is a total service provider business community building and audience engagement.”

Source: RevenueBase Database · checked Sep 19, 2026
2Indirect evidenceIthaca, NY, United StatesHQ checked Sep 19, 2026201-500398 contacts →

Indirect evidence

“The Outreach Team is a national consulting firm working to make the world a better place.”

Source: RevenueBase Database · checked Sep 19, 2026
3Partial evidenceSunnyside, NY, United StatesHQ checked Sep 19, 202651-200363 contacts →

Partial evidence

“Sunnyside Community Services (SCS) is a community-based nonprofit centered on the belief that every person deserves meaningful support to achieve their aspirations – especially…”

Source: RevenueBase Database · checked Sep 19, 2026
4Partial evidenceSanta Ana, CA, United StatesHQ checked Sep 19, 2026n/a280 contacts →

Partial evidence

“Delhi Center is a private, non-profit community-based organization established in 1969 whose mission is to advance self-sufficiency through sustainable programs in health…”

Source: RevenueBase Database · checked Sep 19, 2026
5Partial evidenceLowell, MA, United StatesHQ checked Sep 19, 2026201-500275 contacts →

Partial evidence

Community Teamwork is a catalyst for social change.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceBirmingham, AL, United StatesHQ checked Sep 19, 202651-200215 contacts →

Indirect evidence

“United Way of Central Alabama serves Chilton, Jefferson, Shelby, Walker, Blount and St.”

Source: RevenueBase Database · checked Sep 19, 2026
7Partial evidenceSeattle, WA, United StatesHQ checked Sep 19, 202651-200161 contacts →

Partial evidence

“We help institutions stay connected to students and alumni they serve by improving communication, simplifying support, and strengthening relationships to drive better outcomes at…”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceEvanston, IL, United StatesHQ checked Sep 19, 202651-200159 contacts →

Indirect evidence

“Everyone knows the Y as a place to camp, swim, or exercise, but we’re so much more.”

Source: RevenueBase Database · checked Sep 19, 2026
9Partial evidenceAtlanta, GA, United StatesHQ checked Sep 19, 202611-50135 contacts →

Partial evidence

“With a vision to make Atlanta the most civically engaged and equitable community in the world, Hands On Atlanta mobilizes the Atlanta community to tackle our city's most pressing…”

Source: RevenueBase Database · checked Sep 19, 2026
10Indirect evidenceCleveland, OH, United StatesHQ checked Sep 19, 202651-200131 contacts →

Indirect evidence

“Founded in 1969, the mission of Lutheran Metropolitan Ministry (LMM) is inspired by our Lutheran faith tradition, and our commitment to act justly, love mercy and walk humbly…”

Source: RevenueBase Database · checked Sep 19, 2026
11Partial evidenceBoston, MA, United StatesHQ checked Sep 19, 202611-50125 contacts →

Partial evidence

“Campus Compact empowers colleges and universities to advance their academic and civic missions by partnering with communities to address complex social issues and further equity…”

Source: RevenueBase Database · checked Sep 19, 2026
12Partial evidenceBronx, NY, United StatesHQ checked Sep 19, 202651-200108 contacts →

Partial evidence

“We envision a vibrant, diverse and equitable community in which all individuals and families have the power to make quality choices about education, employment, housing, wellness…”

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceMetuchen, NJ, United StatesHQ checked Sep 19, 2026501-1,00094 contacts →

Indirect evidence

“Strength in numbers The Y is a nonprofit like no other.”

Source: RevenueBase Database · checked Sep 19, 2026
14Partial evidenceAthens, United StatesHQ checked Sep 19, 202611-5094 contacts →

Partial evidence

“At Family Connection-Communities In Schools of Athens, we connect students, families, and residents with the relationships and resources they need to thrive by: Supporting…”

Source: RevenueBase Database · checked Sep 19, 2026
15Indirect evidenceDenver, CO, United StatesHQ checked Sep 19, 202651-20088 contacts →

Indirect evidence

“Before Colorado cities were full of cut and paste high-rises and living here was on a checklist, our corner of the Front Range was full of comfy mountain towns and cowboy…”

Source: RevenueBase Database · checked Sep 19, 2026
16Indirect evidenceBoston, MA, United StatesHQ checked Sep 19, 202651-20084 contacts →

Indirect evidence

“The Meet Boston mission is to elevate Boston’s vibrant neighborhoods and diverse people, amplifying their stories and sharing them locally and across the globe.”

Source: RevenueBase Database · checked Sep 19, 2026
17Indirect evidenceHarrisburg, PA, United StatesHQ checked Sep 19, 2026501-1,00083 contacts →

Indirect evidence

“You know the challenges that we face in the Harrisburg area.”

Source: RevenueBase Database · checked Sep 19, 2026
18Indirect evidenceChicago, IL, United StatesHQ checked Sep 19, 202611-5059 contacts →

Indirect evidence

“Chicago Cares mobilizes volunteers to build a stronger, more unified Chicago.”

Source: RevenueBase Database · checked Sep 19, 2026
19Partial evidenceBurbank, CA, United StatesHQ checked Sep 19, 202651-20058 contacts →

Partial evidence

“The Burbank Community Y has been at the heart of our community since 1924.”

Source: RevenueBase Database · checked Sep 19, 2026
20Partial evidenceMilwaukee, WI, United StatesHQ checked Sep 19, 202611-5053 contacts →

Partial evidence

“Safe & Sound Mission: We unite residents, youth, law enforcement and community resources to build safe and empowered neighborhoods.”

Source: RevenueBase Database · checked Sep 19, 2026
21Partial evidenceHartford, CT, United StatesHQ checked Sep 19, 202611-5051 contacts →

Partial evidence

“Hands On Hartford, in partnership with others, strengthens community in Hartford by responding faithfully to people in need through programs that change lives and renew human…”

Source: RevenueBase Database · checked Sep 19, 2026
22Indirect evidenceSanta Ana, CA, United StatesHQ checked Sep 19, 202611-5049 contacts →

Indirect evidence

“OneOC's mission is to accelerate nonprofit success.”

Source: RevenueBase Database · checked Sep 19, 2026
23Strong evidenceNew Orleans, LA, United StatesHQ checked Sep 19, 2026n/a49 contacts →

Strong evidence

“Tulane Hillel is a non-profit community center that fosters leadership and community engagement.”

Source: RevenueBase Database · checked Sep 19, 2026
24Partial evidenceMinneapolis, MN, United StatesHQ checked Sep 19, 202611-5042 contacts →

Partial evidence

“Strong communities are made up of meaningful relationships and guided by our deepest values.”

Source: RevenueBase Database · checked Sep 19, 2026
25Partial evidenceSan Diego, CA, United StatesHQ checked Sep 19, 202611-5039 contacts →

Partial evidence

“Alliance San Diego is the community empowerment organization that builds coalitions to promote justice and social change.”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 25 of 1,319 community engagement organizations based in the United States

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Community engagement organizations based in the United States at a glance

As of Sep 19, 2026
26.8%Verified-email coverage
10.3Average contacts per company
1-10Median size (employees)
3.0%Largest-city concentration · Chicago
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
937
11-50
289
51-200
65
201-500
13
501-1,000
4
1,001-5,000
6
10001+
1

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 1,319 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 community engagement organizations, 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 “community engagement organizations”. 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 community engagement organizations), 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 community engagement organizations, 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, 3,622 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 19, 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.

Community engagement organizations by metro

  • Community engagement organizations in Chicago40
  • Community engagement organizations in New York40

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 community engagement organizations, 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 community engagement organizations are there based in the United States?

RevenueBase identified 1,319 community engagement organizations 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?

365 Media, headquartered in Portsmouth, tops this list with the largest team on record.

Which city has the most community engagement organizations?

Chicago leads with 40 headquartered companies, followed by New York (40) and Los Angeles (24).

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 3,622 verified decision-maker contacts tracked across these 1,319 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 19, 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.