A list of chapters of the college organization Phrateres.
| Chapter | Installation Date | Institution | Location | Inactive |
|---|---|---|---|---|
| Alpha | University of California, Los Angeles | Los Angeles | ? (evidence of activity in 1974) | |
| Beta | University of Washington | Seattle | 1970s[1] | |
| Gamma | [2] [3] [4] | Oregon State University | Corvallis, Oregon | 1968 |
| Gamma (second) | Northern Arizona University | Flagstaff, Arizona | ? | |
| Delta | Whitman College | Walla Walla, Washington | ? (before 1950) | |
| Delta (second) | Los Angeles State College (now California State University, Los Angeles) | Los Angeles | ? (evidence of activity in 1972) | |
| Epsilon | University of New Mexico | Albuquerque, New Mexico | ? (evidence of activity in 1951) | |
| Zeta | Carroll College (now Carroll University) | Waukesha, Wisconsin | ? (1940, but the alumni chapter remained active, even creating and awarding the Lura Heeter Scholarship Award to descendants of Phrateres actives) | |
| Eta | Agricultural College of Colorado (now Colorado State University) | Fort Collins, Colorado | ? (evidence of activity in 1949) | |
| Eta (Second) | Arizona State University | Phoenix, Arizona | 1990s | |
| Theta* | University of British Columbia | Vancouver | Still active | |
| Iota | University of California, Berkeley | Berkeley, California | ? (evidence of activity in 1949)[5] | |
| Kappa | Fresno State College (now California State University, Fresno) | Fresno, California | ? (evidence of activity in 1956 & 1972) | |
| Lambda | University of Arizona | Tucson, Arizona | 2000[6] | |
| Mu | Utah State Agricultural College | Logan, Utah | ? (?) | |
| Nu | University of California, Santa Barbara | Santa Barbara, California | ? (evidence of activity in 1972) | |
| Nu (second) | California State University, Northridge | Northridge, California | ? (?) | |
| Xi | Illinois Wesleyan | Bloomington, Illinois | ? (evidence of activity in 1945) | |
| Omicron | Rock Island, Illinois | [7] | ||
| Omicron (second) | San Jose State College (now San José State University) | San Jose, California | ? (Evidence of Activity in the mid 1960s[8] and in 1972) | |
| Rho | University of Southern California | Los Angeles | ? (evidence of activity in 1985) | |
| Sigma | University of Texas, El Paso | El Paso, Texas | ? (evidence of activity in 1968 and 1974)[9] | |
| Tau | Burnaby, British Columbia | ? (evidence of activity in 1972) | ||
| Phi | Toronto | ? (evidence of activity in 1972) | ||
| Pi | Kent, Ohio | ? (?)[10] | ||
| Psi | University of California, Irvine | Irvine, California | ? (evidence of activity in 1975) | |
| Omega | Victoria College (now the University of Victoria) | Greater Victoria, British Columbia | ? (evidence of activity in 1972) | |