42 chapters
| Chapter | Type | School or city | Area | President | Chartered |
|---|---|---|---|---|---|
| Alpha Alpha Beta | Collegiate | Chicago State University | Chicago Metro | Donovan Lloyd | 1985 |
| Alpha Beta Omicron | Collegiate | Elmhurst College, Elmhurst, IL | — | — | 2000 |
| Delta Chi | Collegiate | Eastern Illinois University | Central Illinois | Terrence Williams | 1970 |
| Delta Tau | Collegiate | Southern Illinois University, Carbondale, IL | Southern Illinois | Jalen Gayles | 1967 |
| Epsilon Chi | Collegiate | Illinois State University | Central Illinois | Jordyn Foster | 1973 |
| Epsilon Chi Sigma | Alumni | Chicago, IL | Chicago Metro | Don Meadows | 1976 |
| Epsilon Eta Sigma | Alumni | Momence, IL | Northern Illinois | Willie Hunt | 1967 |
| Epsilon Gamma | Collegiate | Northern Illinois University | Northern Illinois | Christian Williams | 1970 |
| Epsilon Lambda Sigma | Alumni | East St. Louis, IL | Southern Illinois | Jeff Jackson | 1971 |
| Epsilon Mu Sigma | Alumni | Champaign, IL | Central Illinois | Terrence Thomas | 1971 |
| Epsilon Pi | Collegiate | Southern Illns. Univ. @ Edwardsville | Southern Illinois | Prince Etenogo | 1972 |
| Epsilon Rho Sigma | Alumni | Peoria, IL | Northern Illinois | Thomas Moore | 1975 |
| Epsilon Upsilon Sigma | Alumni | Chicago, IL | Chicago Metro | Joaquin Barry | 1975 |
| Epsilon Xi | Collegiate | Univ. of Illinois @ Champaign | Central Illinois | Brandon Fizer | 1972 |
| Eta Psi Sigma | Alumni | Springfield, IL | Central Illinois | Robert Banks | 1981 |
| Gamma Eta Gamma | Collegiate | Quincy University | — | — | 2014 |
| Gamma Pi Gamma | Collegiate | Lake Forest College | Northern Illinois | — | 2017 |
| Gamma Rho Eta | Collegiate | McKendree University | Southern Illinois | — | 2019 |
| Iota Alpha | Collegiate | University of IL @ Chicago | Chicago Metro | — | 1931 |
| Iota Chi | Collegiate | Western Illinois University | Northern Illinois | Isaiah Dodson | 1978 |
| Iota Eta | Collegiate | Lewis University | — | — | 1978 |
| Iota Nu | Collegiate | Northwestern University | — | — | 1978 |
| Iota Nu Sigma | Alumni | Chicago, IL | Chicago Metro | Kent Proindexter | 1983 |
| Iota Phi Sigma | Alumni | Aurora, Illinois | Chicago Metro | Stephan Ross | 1987 |
| Kappa Mu Sigma | Alumni | Bloomington-Normal, IL | Central Illinois | Joel Johnson | 1989 |
| Lambda Omicron | Collegiate | Illinois Wesleyan University | — | — | 1980 |
| Mu Eta | Collegiate | Univ of Illinois-Springfield fka Sangamon State | Central Illinois | Timothy Redmond | 1980 |
| Nu Gamma Sigma | Alumni | Belleville, IL | Southern Illinois | Ron McClellan | 2002 |
| Nu Kappa Sigma | Alumni | Dekalb, IL | Northern Illinois | Reginald Gardner | 2005 |
| Nu Lambda Sigma | Alumni | Lake County | Northern Illinois | Michael Randell | 2005 |
| Nu Pi Sigma | Alumni | Rockford, IL | Northern Illinois | Allen Williams | 2006 |
| Omicron Alpha Sigma | Alumni | Matteson, IL | Chicago Metro | Anthony Jones | 2009 |
| Omicron Epsilon Sigma | Alumni | Carbondale, IL | Southern Illinois | James Walton | 2009 |
| Pi Omicron | Collegiate | Aurora University | — | — | — |
| Pi Psi Sigma | Alumni | Chicago,IL | Chicago Metro | Al Thomas | 2015 |
| Tau Delta Sigma | Alumni | Decatur, IL | Central Illinois | Larry Nelson, Jr. | 2020 |
| Tau Nu Sigma | Alumni | Western Suburbs, Chicago, IL | Chicago Metro | Clark Brantley | 2023 |
| Tau Xi Sigma | Alumni | Southwestern Suburbs, Chicago, IL | Chicago Metro | Bobby Dillard | 2023 |
| Theta Epsilon | Collegiate | Monmouth College | — | — | 1976 |
| Upsilon Nu Sigma | Alumni | North Cook County, Illinois | Chicago Metro | Rafael Matos | 2024 |
| Upsilon Sigma | Alumni | Chicago, IL | Chicago Metro | Carl Walker | 1927 |
| Zeta Mu | Collegiate | Bradley University | Northern Illinois | Maliq Wilson | 1974 |