| Other organizations in Illinois |
| Id | Name | Address | State | Established | Total Income |
| 1 | American Naprapathic Association | 104 E Jackson St, Oswego, IL 60543 | IL | 1991-05 | $0 |
| 2 | American Needlepoint Guild Inc | 760 17th St, Rock Island, IL 61201-2560 | IL | 1973-10 | $997,292 |
| 3 | American Negro Public Opinion Service | 1957 E 71st St Ste 204, Chicago, IL 60649-2005 | IL | 1983-08 | $1,287 |
| 4 | American Neuromodulation Society | 4700 W Lake Ave, Glenview, IL 60025-1468 | IL | 1996-02 | $1,228,478 |
| 5 | American Neurotology Society | 1980 Warson Rd, Springfield, IL 62704-3255 | IL | 1990-03 | $249,464 |
| 6 | American Nickeloid Employees Credit Union | 400 1st St, La Salle, IL 61301-2328 | IL | 1955-05 | $434,565 |
| 7 | American Oil Chemists Society | 2710 Boulder Rd, Urbana, IL 61802-6996 | IL | 1965-01 | $5,615,707 |
| 8 | American Oil Chemists Society Foundation Inc | 2710 Boulder Rd, Urbana, IL 61802-6996 | IL | 1995-12 | $107,709 |
| 9 | American Orthopaedic Association | 6300 N River Rd Ste 505, Rosemont, IL 60018-4235 | IL | 1937-11 | $4,070,631 |
| 10 | American Osteopathic Academy Of Addiction Medicine | PO BOX 280, Lagrange Hlds, IL 60525-0280 | IL | 1991-05 | $198,570 |
| 11 | American Osteopathic Association Of Medical Informatics | 142 East Ontario Street, Chicago, IL 60611-2864 | IL | 2005-03 | $0 |
| 12 | American Osteopathic College | 142 E Ontario St 4th Floor, Chicago, IL 60611-2874 | IL | | $21,217 |
| 13 | American Osteopathic Foundation Inc | 142 E Ontario Street, Chicago, IL 60611-2874 | IL | 1951-04 | $6,487,691 |
| 14 | American Osteopathic Infromation Association | 142 E Ontario Street, Chicago, IL 60611-2874 | IL | 2000-03 | $5,014,513 |
| 15 | American Passion Play Inc | 107 E Chestnut, Bloomington, IL 61701-3009 | IL | 1956-03 | $134,279 |
| 16 | American Pediatric Surgical Association | 111 Deer Lake Rd Ste 100, Deerfield, IL 60015-4943 | IL | 1971-09 | $844,589 |
| 17 | American Physical Therapy Association Illinois Chapter | 300 E 5th Ave Ste 430, Naperville, IL 60563-3287 | IL | 1954-06 | $487,448 |
| 18 | American Pie Council | 28495 Ballard Dr, Lake Forest, IL 60045-4510 | IL | 2004-02 | $326,582 |
| 19 | American Planning Association, 21 Illinois Chapter | 627 Grove St, Evanston, IL 60201-4474 | IL | 1975-07 | $122,554 |
| 20 | American Police Center & Museum | 3439 Grand Blvd, Brookfield, IL 60513-1207 | IL | 1974-01 | $0 |
| 21 | American Postal Workers Accident Benefit Association, 7139 Fox Valley Local | PO BOX 6143, Aurora, IL 60598-0143 | IL | 1962-03 | $92,444 |
| 22 | American Postal Workers Union, 1 Chicago Local | 2118 S Michigan Ave, Chicago, IL 60616-1713 | IL | 1973-11 | $860,831 |
| 23 | American Postal Workers Union, 109 Bi-State Area Local | PO BOX 3131, Rock Island, IL 61204-3131 | IL | 1973-11 | $53,677 |
| 24 | American Postal Workers Union, Bloomington Area Local 228 | PO BOX 383, Bloomington, IL 61702-0383 | IL | 1973-11 | $64,829 |
| 25 | American Postal Workers Union, 239 Lincoln Land Area Local | PO BOX 2521, Springfield, IL 62708-2521 | IL | 1973-11 | $56,121 |
| 26 | American Postal Workers Union, 6266 604-605 Area Local | 4707 Willow Springs Rd Ste 205, La Grange, IL 60525-6155 | IL | 1973-11 | $185,091 |
| 27 | American Postal Workers Union, 692 Champaign Area Local | PO BOX 6214, Champaign, IL 61826-6214 | IL | 1973-11 | $44,854 |
| 28 | American Postal Workers Union, 7011 T Ohare-Midway Local | PO BOX 66031, Chicago, IL 60666-0031 | IL | 1973-11 | $98,323 |
| 29 | American Postal Workers Union, 7140 Northwest Illinois | 194 W Lake St, Elmhurst, IL 60126-1519 | IL | 1973-11 | $633,534 |
| 30 | American Postal Workers Union, 77 Quincey Area Local | PO BOX 3034, Quincy, IL 62305-3034 | IL | 1973-11 | $24,125 |
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