Popularity ranking · United States

The 21 most popular Fraternities in United States

This curated ranking covers the 21 largest fraternities in United States, ordered by estimated audience size from Rascasse's anonymized search-behavior signals. Chi Omega, Alpha Phi Alpha and Kappa Alpha Theta lead the list with a combined estimated audience of 2.2M people. Across all 21 entries the average audience size is 359k, and the largest, Chi Omega, reaches around 877k people in United States. Audience size is the estimated number of unique people in United States who actively engage with each fraternity, derived from search demand signals. Rankings reflect search-behavior signals collected across United States and are updated quarterly.

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How to read this list

Rank

Position in the Top 21, sorted by audience size from largest to smallest. Updated quarterly.

Audience size

Estimated number of unique people in United States who actively engage with this audience, derived from anonymized search-behavior signals.

Country share

Share of the global audience that is active in United States. A higher value means the audience is more locally concentrated here.

Avg age

Average age in years across the people who engage with this audience in United States, derived from anonymized search-behavior signals. A dash means demographic data is not yet available.

Female share

Share of women among the people who engage with this audience in United States. 50% is gender-balanced; values above mean female-skewed, below mean male-skewed.

Ranking

Rank Audience Audience size Avg age Female share Subtype
1 Chi Omega 877k 41.3 67.9% Fraternity
2 Alpha Phi Alpha 814k 38.2 59.1% Fraternity
3 Kappa Alpha Theta 559k 31.7 58.1% Fraternity
4 Sigma Chi 543k 30.1 41.2% Fraternity
5 Zeta Tau Alpha 487k 31.2 53.9% Fraternity
6 Alpha Chi Omega 473k 31.5 55.9% Fraternity
7 Alpha Omicron Pi 451k 30.9 54.8% Fraternity
8 Kappa Alpha Psi 409k 40.1 60.0% Fraternity
9 Kappa Sigma 408k 31.2 37.3% Fraternity
10 Pi Beta Phi 407k 30.3 55.4% Fraternity
11 Alpha Xi Delta 358k 30.2 50.2% Fraternity
12 Tau Beta Sigma 311k 35.3 55.0% Fraternity
13 Alpha Gamma Delta 289k 30.6 48.6% Fraternity
14 Iota Phi Theta 263k 38.4 63.0% Fraternity
15 Tau Kappa Epsilon 252k 29.4 34.5% Fraternity
16 Sigma Nu 244k 31.0 33.1% Fraternity
17 Lambda Chi Alpha 199k 31.6 35.3% Fraternity
18 Sigma Alpha Iota 102k 32.8 61.0% Fraternity
19 Tau Beta Pi 75k 34.4 54.9% Fraternity
20 Delta Lambda Phi 8.8k — — Fraternity
21 Tau Delta Phi 5.7k 29.2 31.9% Fraternity

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Frequently asked questions

How is this list of the most popular fraternities compiled?

Rascasse aggregates anonymized search-behavior signals across United States and ranks each fraternity by its estimated audience size. Only entries with at least 5 measured entities are listed.

How often is the list updated?

The ranking is updated quarterly from the latest search-behavior data and re-published as a static page.

What is the largest fraternity in United States?

Chi Omega currently leads with an estimated audience of 877k people in United States.

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