| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| CITY WIDE SECURITY INC | Business | 122000605 | CHICAGO | CANCELLED | Verify |
| CITY-WATCH INC | Business | 122000554 | CHICAGO | NOT RENEWED | Verify |
| CITY-WATCH INC | Business | 117000637 | CHICAGO | NOT RENEWED | Verify |
| CITY-WATCH INC | Business | 122001357 | CHICAGO | NOT RENEWED | Verify |
| CITYWIDE SECURITY GROUP INC | Business | 117001676 | CHICAGO | ACTIVE | Verify |
| CITYWIDE SECURITY GROUP INC | Business | 122000941 | CHICAGO | ACTIVE | Verify |
| CIVIL & CRIMINAL INVESTIGATIONS INC | Business | 117001280 | CHICAGO | NOT RENEWED | Verify |
| CIVIL AND ADMINISTRATIVE SERVICES CO | Business | 122000155 | CHICAGO | NOT RENEWED | Verify |
| CIVIL AND ADMINISTRATIVE SERVICES CO | Business | 127000052 | CHICAGO | NOT RENEWED | Verify |
| CIVIL AND ADMINISTRATIVE SERVICES CO | Business | 117000250 | CHICAGO | NOT RENEWED | Verify |
| CIVIL INVESTIGATION SERVICE LLC | Business | 117001390 | ELGIN | NOT RENEWED | Verify |
| CIVIL SERVICE OF NORTHERN ILLINOIS INC | Business | 117001399 | ROCKTON | NOT RENEWED | Verify |
| CJ OPERATING LLC | Business | 117001578 | ELK GROVE VILLAGE | NOT RENEWED | Verify |
| CLAIM PREVENTION DIVISION | Business | 201000117 | DECATUR | CLOSED | Verify |
| CLAIMS BUREAU USA, INC | Business | 117001328 | CHICAGO | ACTIVE | Verify |
| CLANDESTINE SERVICES AGENCY INC | Business | 117001445 | AURORA | NOT RENEWED | Verify |
| CLARENCE F KERR DETECTIVE AGENCY | Business | 122000054 | CHICAGO | INOPERATIVE | Verify |
| CLARENCE F KERR DETECTIVE AGENCY | Business | 117000063 | CHICAGO | INOPERATIVE | Verify |
| CLARK ALARM CO INC | Business | 127000696 | CHICAGO | NOT RENEWED | Verify |
| CLARK INTERNATIONAL INC | Business | 117001803 | NAPERVILLE | ACTIVE | Verify |
| CLARK INTERNATIONAL INC | Business | 122001451 | NAPERVILLE | ACTIVE | Verify |
| CLASSIC HARDWARE INC | Business | 192000143 | BROOKFIELD | NOT RENEWED | Verify |
| CLASSIC SECURITY SYSTEMS COMPANY | Business | 127000410 | ROSELLE | NOT RENEWED | Verify |
| CLASSIFIED GUNS CORP | Business | 102000350 | LYONS | ACTIVE | Verify |
| CLASSIFIED INVESTIGATION BUREAU INC | Business | 117000904 | OAK BROOK | NOT RENEWED | Verify |
| CLEAR LOSS PREVENTION INC | Business | 127001616 | DOWNERS GROVE | ACTIVE | Verify |
| CLINTON ELECTRIC INC | Business | 127000224 | INA | NOT RENEWED | Verify |
| CLR SECURITY & INVESTIGATION INC | Business | 117001945 | CHICAGO | ACTIVE | Verify |
| CLR SECURITY & INVESTIGATION INC | Business | 122001690 | CHICAGO | ACTIVE | Verify |
| CLS ENTERPRISES OF LOCKPORT INC | Business | 117001426 | MOKENA | ACTIVE | Verify |
| CLS ENTERPRISES OF LOCKPORT INC | Business | 262000042 | MOKENA | NOT RENEWED | Verify |
| CLUTTER INVESTIGATIONS INC | Business | 118000307 | DANVILLE | NOT RENEWED | Verify |
| CLUTTER INVESTIGATIONS INC | Business | 262000026 | SPRINGFIELD | CLOSED | Verify |
| CLUTTER INVESTIGATIONS INC | Business | 117001206 | SPRINGFIELD | ACTIVE | Verify |
| CMD SECURITY SOLUTIONS, INC | Business | 127001829 | SCHAUMBURG | ACTIVE | Verify |
| CN SECURITY SYSTEMS INC | Business | 127001814 | VERNON HILLS | ACTIVE | Verify |
| CNJ ASSOCIATES INC | Business | 117001251 | BENSENVILLE | NOT RENEWED | Verify |
| COAST TO COAST K9 SECURITY INC | Business | 122001255 | CHICAGO | NOT RENEWED | Verify |
| COASTAL INTERNATIONAL SECURITY INC | Business | 122000784 | SANDWICH | NOT RENEWED | Verify |
| COBRA INVESTIGATIONS | Business | 117000784 | ELGIN | NOT RENEWED | Verify |
| COBRA INVESTIGATIONS | Business | 118000165 | ROCKFORD | NOT RENEWED | Verify |
| COBRA INVESTIGATIONS LTD | Business | 117001506 | LAKE IN THE HILLS | NOT RENEWED | Verify |
| COBRA SECURITY | Business | 122000732 | ELGIN | NOT RENEWED | Verify |
| COGNISA SECURITY INC | Business | 122000873 | CHICAGO | CLOSED | Verify |
| COGSWELL AND ASSOCIATES | Business | 117000722 | GURNEE | NOT RENEWED | Verify |
| COLELLA INVESTIGATION SERVICES INC | Business | 117000917 | NAPERVILLE | INOPERATIVE | Verify |
| COLELLA INVESTIGATION SERVICES INC | Business | 118000187 | ROMEOVILLE | CLOSED | Verify |
| COLEMAN ELECTRICAL SERVICE INC | Business | 127000149 | MANSFIELD | NOT RENEWED | Verify |
| COLIANT SOLUTIONS INC | Business | 127001501 | SPRINGFIELD | ACTIVE | Verify |
| COLLEGE BOUND LTD | Business | 262000176 | CHICAGO | ACTIVE | Verify |