| Other organizations in Illinois |
| Id | Name | Address | State | Established | Total Income |
|---|
| 1 | Omega Psi Phi Fraternity, 774 Sigma Xi | PO BOX 2636, Champaign, IL 61825-2636 | IL | 1953-01 | $0 |
| 2 | Omega Psi Phi Fraternity, 829 Chi Beta Beta Graduate Chapter | PO BOX 226, Bloomington, IL 61702-0226 | IL | 1953-01 | $0 |
| 3 | Omega Psi Phi Fraternity, 887 Theta Kappa Kappa | 2410 Cowper Ave, Evanston, IL 60201-1846 | IL | 1953-01 | $0 |
| 4 | Omega Psi Phi Fraternity, 945 Rho Mu Mu | PO BOX 12376, Chicago, IL 60612-0376 | IL | 1953-01 | $0 |
| 5 | Omega Psi Phi Fraternity, Omega Psi Phi Rho Tau Chapter | Po Box 252, Gurnee, IL 60031 | IL | 1953-01 | $0 |
| 6 | Omega Psi Phi Fraternity, Tau Theta Chapter District 10 | 1163 Harding Ave, Calumet City, IL 60409-2450 | IL | 1953-01 | $0 |
| 7 | Omicron Delta Epsilon International Honor Society In Economics Inc, Alpha Gamma Of Il-Knox College | 2 E S St Box 47 Dept Of Economics, Galesburg, IL 61401-4938 | IL | 1974-01 | $0 |
| 8 | Omicron Kappa Upsilon-Honorary Dental Society | 2800 College Avenue Building 288, Alton, IL 62002 | IL | 1972-10 | $0 |
| 9 | Once Upon A Time Foundation Inc | 7920 Lake St, River Forest, IL 60305 | IL | 2011-08 | $0 |
| 10 | Oncology Nursing Society, C230 Northwest Illinois | 4702 Crescent Dr, Rockford, IL 61108-4006 | IL | 1981-09 | $0 |
| 11 | Onsite Wastewater Professionals Of Il Association Ltd | Po Box 302, Pittsfield, IL 62363 | IL | | $0 |
| 12 | Open Arms Lutheran Worshipping Community | PO BOX 574, Rockton, IL 61072-0574 | IL | 1988-04 | $0 |
| 13 | Open Door Baptist Church | 205 E Illinois Rt 121, Toledo, IL 62468 | IL | 1970-05 | $0 |
| 14 | Operation Get It Done Inc | 4446 N Kenton Ave, Chicago, IL 60630 | IL | 2013-07 | $0 |
| 15 | Operation Spouse And Soldier Support Group | 310 Meredith Dr, Sherman, IL 62684 | IL | | $0 |
| 16 | Opticians Association Of Illinois | 74 Walnut Valley Dr, Springfield, IL 62707 | IL | 1996-05 | $0 |
| 17 | Optimist International | 1125 Crescent, Springfield, IL 62704 | IL | 1968-10 | $0 |
| 18 | Optimist International, 30003 Sports Of St Louis Area Mo | 324 N Cedar Bluff Dr, Valmeyer, IL 62295-3238 | IL | 1958-07 | $0 |
| 19 | Orchard Valley Baptist Church | 2301 Jericho Rd, Aurora, IL 60506-5613 | IL | 1970-05 | $0 |
| 20 | Order Of Ahepa 203 Garfield, Ahepa Chapter No 203 | 345 Longfellow Dr, Wheaton, IL 60189-2144 | IL | 1972-10 | $0 |
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