Company lists · Data refreshed September 2026

Top 25 Alumni networking organizations based in the United States

Name: Alumni networking organizations based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,176 companies tracked

RevenueBase identified 1,176 alumni networking organizations headquartered in the United States as of September 2026 and tracks 24,626 professional contacts across them, including 5,482 with verified work emails. New York is the largest hub.

This list covers alumni networking 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

1,176Companies

24,626Contacts tracked

5,482Verified emails

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The 25 largest alumni networking organizations based in the United States

Ranked by team size

Top 25 of 1,176 alumni networking 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 alumni networking 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Wisconsin Foundation And Alumni Association	Partial evidence	Madison, WI, United StatesHQ checked Sep 19, 2026	201-500	515 contacts →
	Partial evidence “The Wisconsin Foundation and Alumni Association is your connection to UW-Madison.” Source: RevenueBase Database · checked Sep 19, 2026
2	Gravyty	Partial evidence	Seattle, WA, United StatesHQ checked Sep 19, 2026	51-200	161 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
3	Georgia Tech Alumni Association	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 19, 2026	11-50	120 contacts →
	Partial evidence “Serve and promote the Institute and its alumni through programming and engagement that fosters lifelong relationships, philanthropic support and goodwill.” Source: RevenueBase Database · checked Sep 19, 2026
4	Toigo Foundation	Indirect evidence	Oakland, CA, United StatesHQ checked Sep 19, 2026	n/a	103 contacts →
	Indirect evidence “For over 35 years, The Toigo Foundation has advanced leadership, excellence and innovation within finance and its intersections.” Source: RevenueBase Database · checked Sep 19, 2026
5	Classmates	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 19, 2026	51-200	100 contacts →
	Partial evidence “For over 30 years, Classmates® has been the leading online social media platform for high school alumni connections.” Source: RevenueBase Database · checked Sep 19, 2026
6	The Post	Indirect evidence	New York, NY, United StatesHQ checked Sep 19, 2026	n/a	85 contacts →
	Indirect evidence “The Post is a private membership network for accomplished athletes turned business leaders.” Source: RevenueBase Database · checked Sep 19, 2026
7	LE Lycée Français DE LOS Angeles	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	201-500	81 contacts →
	Partial evidence “Alumni Page The mission of Le Lycée Français de Los Angeles is to promote interaction between current and former students.” Source: RevenueBase Database · checked Sep 19, 2026
8	Harvard Alumni Entrepreneurs	Partial evidence	Cambridge, MA, United StatesHQ checked Sep 19, 2026	51-200	77 contacts →
	Partial evidence “Harvard Alumni Entrepreneurs is the only official alumni organization recognized by the Harvard Alumni Association for promotion of entrepreneurship in Harvard alumni across the…” Source: RevenueBase Database · checked Sep 19, 2026
9	Schechter	Partial evidence	Northbrook, IL, United StatesHQ checked Sep 19, 2026	51-200	76 contacts →
	Partial evidence “Schechter boasts more than alumni living throughout the United States, Israel, and around the world.” Source: RevenueBase Database · checked Sep 19, 2026
10	Peoplepath	Partial evidence	Seattle, WA, United StatesHQ checked Sep 19, 2026	51-200	67 contacts →
	Partial evidence “PeoplePath is the leading global provider for corporate alumni management software.” Source: RevenueBase Database · checked Sep 19, 2026
11	Americorps Alums	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	n/a	67 contacts →
	Partial evidence “AmeriCorps Alums is the only national network that connects the over 1 million alumni of AmeriCorps to the people, ideas, and resources they need to support a lifetime of service.” Source: RevenueBase Database · checked Sep 19, 2026
12	Upnotch	Partial evidence	Seattle, WA, United StatesHQ checked Sep 19, 2026	11-50	64 contacts →
	Partial evidence “Google Play/App Store 🧡 Become a member & find a mentor today Join Speed Networking Events FREE Membership.” Source: RevenueBase Database · checked Sep 19, 2026
13	Openwater Group	Indirect evidence	Palo Alto, United StatesHQ checked Sep 19, 2026	n/a	60 contacts →
	Indirect evidence “OpenWater is a curated network of 1,500+ vetted executives, founders, and operators - each with 20+ years of experience.” Source: RevenueBase Database · checked Sep 19, 2026
14	Notre Dame Academy, Worcester	Partial evidence	Worcester, MA, United StatesHQ checked Sep 19, 2026	11-50	50 contacts →
	Partial evidence “Whether you graduated from Notre Dame Academy one year ago, twenty years ago or are a member of the first graduating class, alumnae are truly the heart of the Academy.” Source: RevenueBase Database · checked Sep 19, 2026
15	LSU Alumni Association	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 19, 2026	51-200	42 contacts →
	Indirect evidence “Welcome to the LSU Tiger Nation!” Source: RevenueBase Database · checked Sep 19, 2026
16	Nebraska Alumni Association	Partial evidence	Lincoln, NE, United StatesHQ checked Sep 19, 2026	11-50	32 contacts →
	Partial evidence “The Nebraska Alumni Association is a nonprofit organization that connects (or re-connects) alumni with their alma mater, and with each other, for the betterment of the university.” Source: RevenueBase Database · checked Sep 19, 2026
17	Harvard Business School Club Of NEW York	Partial evidence	New York, NY, United StatesHQ checked Sep 19, 2026	n/a	32 contacts →
	Partial evidence “With over alumni in the region, the Harvard Business School Club of New York provides a connection to HBS and a space for alumni of all ages to network, grow as leaders, and…” Source: RevenueBase Database · checked Sep 19, 2026
18	Ypcommunities	Partial evidence	Seattle, WA, United StatesHQ checked Sep 19, 2026	11-50	32 contacts →
	Partial evidence “YPCommunities is a networking organization established in 2011 to provide a place where young professionals can connect with other young professionals.” Source: RevenueBase Database · checked Sep 19, 2026
19	The Jewish Grad Organization JGO	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 19, 2026	11-50	31 contacts →
	Partial evidence “JGO: The Jewish Graduate Organization (formerly JGSI) is the national movement for Jewish graduate students and alumni.” Source: RevenueBase Database · checked Sep 19, 2026
20	Kodi Connect	Indirect evidence	Calabasas, CA, United StatesHQ checked Sep 19, 2026	11-50	29 contacts →
	Indirect evidence “Kodi Connect stands as a beacon of innovation and exclusivity in the event industry, transforming the concept of business gatherings.” Source: RevenueBase Database · checked Sep 19, 2026
21	Brown Angel Group	Partial evidence	New York, United StatesHQ checked Sep 19, 2026	1-10	27 contacts →
	Partial evidence “Brown Angel Group (BAG) is a global network of angel investors who have come together to support early-stage startups founded by Brown alumni through capital, connections and…” Source: RevenueBase Database · checked Sep 19, 2026
22	Teach For America Massachusetts	Partial evidence	Boston, MA, United StatesHQ checked Sep 19, 2026	11-50	25 contacts →
	Partial evidence “Stay connected to alumni in the region, great opportunities, and the work of Teach For America!” Source: RevenueBase Database · checked Sep 19, 2026
23	startupwind.inc	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 19, 2026	11-50	22 contacts →
	Partial evidence “StartUpWind is an Entrepreneur’s Social Network of students and alumni of premier schools and it powers them to bring their raw ideas to life.” Source: RevenueBase Database · checked Sep 19, 2026
24	Aiesec Life	Indirect evidence	United StatesHQ checked Sep 19, 2026	1-10	21 contacts →
	Indirect evidence “AIESEC Life is the U.S.” Source: RevenueBase Database · checked Sep 19, 2026
25	Cornell Hotel Society	Partial evidence	Ithaca, NY, United StatesHQ checked Sep 19, 2026	11-50	18 contacts →
	Partial evidence “The Cornell Hotel Society is THE OFFICIAL ALUMNI ORGANIZATION of the Cornell Nolan School of Hotel Administration and the premier hospitality network created by alumni for alumni.” Source: RevenueBase Database · checked Sep 19, 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: alumni networking organizations. 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 alumni networking organizations.
Partial evidence: Its own public description names part of alumni networking organizations, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name alumni networking organizations. 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 1,176 alumni networking organizations based in the United States

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Alumni networking organizations based in the United States at a glance

As of Sep 19, 2026

22.3%Verified-email coverage

20.9Average contacts per company

11-50Median size (employees)

7.1%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

477

11-50

324

51-200

160

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 1,176 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 alumni networking 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 “alumni networking 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 alumni networking 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 alumni networking 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, 5,482 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.

Alumni networking organizations by metro

Alumni networking organizations in New York83
Alumni networking organizations in Los Angeles54
Alumni networking organizations in Washington33
Alumni networking organizations in Chicago29

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 alumni networking 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 alumni networking organizations are there based in the United States?

RevenueBase identified 1,176 alumni networking 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?

Wisconsin Foundation And Alumni Association, headquartered in Madison, tops this list with the largest team on record.

Which city has the most alumni networking organizations?

New York leads with 83 headquartered companies, followed by Los Angeles (54) and Washington (33).

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 5,482 verified decision-maker contacts tracked across these 1,176 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.