Company lists · Data refreshed September 2026
Top 25 Fraternities and sororities organizations based in the United States
RevenueBase identified 264 fraternities and sororities organizations headquartered in the United States as of September 2026 and tracks 25,237 professional contacts across them, including 668 with verified work emails. Tuscaloosa is the largest hub.
This list covers fraternities and sororities 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.
The 25 largest fraternities and sororities organizations based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,799 contacts → | ||||
Indirect evidence “Alpha Phi is a loyal sisterhood of women courageously pursuing limitless excellence.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,466 contacts → | ||||
Indirect evidence “We’ve been doing good for women and communities since 1873.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 3,264 contacts → | ||||
Indirect evidence “Pi Beta Phi has worked to support and empower our sisters since 1867.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,976 contacts → | ||||
Indirect evidence “Alpha Chi Omega is an organization for women who have strength and courage in their convictions.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,429 contacts → | ||||
Indirect evidence “Phi Mu is a national, not-for-profit Fraternity that continues to help young women become better students, stronger professionals and greater leaders by offering social…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,161 contacts → | ||||
Indirect evidence “Pi Kappa Phi is a collegiate men's organization focused on providing a solid experience in key areas of male development including social interaction, scholarship, leadership and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 921 contacts → | ||||
Indirect evidence “Founded in 1858 at Bethany College in what is now northern West Virginia Delta Tau Delta is a values-based organization with Truth, Courage, Faith and Power as her core values.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 889 contacts → | ||||
Indirect evidence “Alpha Phi Omega is the single most represented co-educational intercollegiate service organization in the United States.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 874 contacts → | ||||
Partial evidence “Lambda Chi Alpha Fraternity is one of the largest men’s general fraternities in North America with more than initiated members and has held chapters at more than 300 universities.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 781 contacts → | ||||
Indirect evidence “Alpha Sigma Phi Fraternity is equally owned and operated by its initiated brothers.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 608 contacts → | ||||
Indirect evidence “Delta Chi (ΔΧ) is an international Greek letter college social fraternity formed on October 13, 1890, at Cornell University, initially as a professional fraternity for law…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 505 contacts → | ||||
Indirect evidence “Delta Sigma Phi is a men's fraternity with active chapters in 33 states of the USA.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 223 contacts → | ||||
Indirect evidence “Chi Psi Fraternity is a strong presence at 34 of America's finest and most respected institutions of higher learning.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 189 contacts → | ||||
Indirect evidence “Founded in 1912, Theta Phi Alpha is a women’s organization to provide close comradeship; to advance educational, social, and philanthropic interests and leadership training; to…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 142 contacts → | ||||
Indirect evidence “Since 1847, Theta Delta Chi has believed that it is the duty of every member to improve himself intellectually, morally, and socially through friendship.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 140 contacts → | ||||
Indirect evidence “Since our founding in 1870, Kappa Alpha Theta has provided support for college women and alumnae throughout their lives.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 75 contacts → | ||||
Indirect evidence “Kappa Delta Rho is an American college social fraternity with chapters throughout the United States.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 73 contacts → | ||||
Indirect evidence “Alpha Phi Delta Fraternity was founded in 1914 at Syracuse University in Syracuse, New York, by a group of men with Italian roots.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 47 contacts → | ||||
Indirect evidence “The Florida Alpha chapter of Sigma Phi Epsilon was founded at the University of Florida in 1925 as the 63rd chapter of Sigma Phi Epsilon nationally, and the 11th Fraternity at the…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 23 contacts → | ||||
Partial evidence “The Interfraternity Council (IFC) serves as the governing body of the 21 IFC fraternities at Clemson University.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 18 contacts → | ||||
Indirect evidence “The mission of Latino America Unida, Lambda Alpha Upsilon Fraternity, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 15 contacts → | ||||
Strong evidence “Alpha Fraternity Management has been helping fraternities and sororities improve operations, provide greater financial stability, and offer a safer housing experience for over 25…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 10 contacts → | ||||
Indirect evidence “FRATERNITY MANAGERS ASSOCIATION is a company based out of 1812 North High Street, COLUMBUS, Ohio, United States.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 2 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 2 contacts → | ||||
Indirect evidence “Greek Resource Services, Inc.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
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: fraternities and sororities 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 fraternities and sororities organizations.
- Partial evidence
- Its own public description names part of fraternities and sororities organizations, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name fraternities and sororities 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 264 fraternities and sororities organizations based in the United States
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Fraternities and sororities organizations based in the United States at a glance
As of Sep 19, 2026Companies by employee count
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 264 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 fraternities and sororities 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 “fraternities and sororities 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 fraternities and sororities 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 fraternities and sororities 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, 668 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.
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 fraternities and sororities 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 fraternities and sororities organizations are there based in the United States?
RevenueBase identified 264 fraternities and sororities 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?
Alpha PHI International Fraternity, headquartered in Denver, tops this list with the largest team on record.
Which city has the most fraternities and sororities organizations?
Tuscaloosa leads with 7 headquartered companies, followed by Indianapolis (6) and West Lafayette (6).
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 668 verified decision-maker contacts tracked across these 264 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.
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