2011 Arrest Rates (200+ Arrests)
Counties
| Rank | County | DUI Arrests | Sworn Officers | DUI Arrest Rate (per officer) |
|---|---|---|---|---|
| 1 | Cook | 475 | 470 | 1.01 |
| 2 | Lake | 368 | 188 | 1.96 |
| 3 | Winnebago | 303 | 122 | 2.48 |
| 4 | Will | 279 | 242 | 1.15 |
| 5 | DeKalb | 273 | 40 | 6.83 |
| 6 | Champaign | 240 | 54 | 4.44 |
| 7 | Macon | 221 | 51 | 4.33 |
Municipalities
| Rank | Municipality | DUI Arrests | Sworn Officers | DUI Arrest Rate (per officer) |
|---|---|---|---|---|
| 1 | Itasca | 264 | 23 | 11.48 |
| 2 | Carol Stream | 349 | 62 | 5.63 |
| 3 | Rock Island | 465 | 83 | 5.60 |
| 4 | Elmhurst | 367 | 67 | 5.48 |
| 5 | Fairview Heights | 203 | 42 | 4.83 |
| 6 | Alton | 281 | 60 | 4.68 |
| 7 | Mundelein | 223 | 52 | 4.29 |
| 8 | Normal | 296 | 78 | 3.79 |
| 8 | Naperville | 622 | 164 | 3.79 |
| 9 | Gurnee | 211 | 61 | 3.46 |
| 10 | Addison | 221 | 65 | 3.40 |
| 11 | Chicago Heights | 265 | 80 | 3.31 |
| 12 | Downers Grove | 236 | 73 | 3.23 |
| 13 | Decatur | 448 | 144 | 3.11 |
| 14 | Orland Park | 263 | 95 | 2.77 |
| 15 | Rockford | 686 | 265 | 2.59 |
| 16 | Springfield | 553 | 236 | 2.34 |
| 17 | Oak Lawn | 245 | 107 | 2.29 |
| 18 | Schaumburg | 250 | 116 | 2.16 |
| 19 | Skokie | 220 | 108 | 2.04 |
| 20 | Waukegan | 264 | 133 | 1.98 |
| 20 | Elgin | 352 | 178 | 1.98 |
| 21 | Palatine | 214 | 110 | 1.95 |
| 22 | Peoria | 306 | 214 | 1.43 |
| 23 | Evanston | 225 | 159 | 1.42 |
| 24 | Aurora | 290 | 286 | 1.01 |
