| Metropolitan/Nonmetropolitan | County | Total law enforcement employees | Total officers | Total civilians |
|---|---|---|---|---|
| Metropolitan Counties | Bond | 19 | 11 | 8 |
| Boone | 84 | 34 | 50 | |
| Calhoun | 9 | 4 | 5 | |
| Champaign | 59 | 53 | 6 | |
| Clinton | 36 | 15 | 21 | |
| Cook | 6,945 | 2,542 | 4,403 | |
| De Kalb | 93 | 41 | 52 | |
| Du Page | 553 | 431 | 122 | |
| Ford | 23 | 7 | 16 | |
| Grundy | 60 | 27 | 33 | |
| Henry | 77 | 23 | 54 | |
| Jersey | 28 | 13 | 15 | |
| Kane | 303 | 96 | 207 | |
| Kankakee | 189 | 63 | 126 | |
| Kendall | 98 | 90 | 8 | |
| Lake | 425 | 169 | 256 | |
| Macon | 158 | 49 | 109 | |
| Macoupin | 52 | 46 | 6 | |
| Madison | 166 | 80 | 86 | |
| Marshall | 16 | 7 | 9 | |
| McHenry | 362 | 120 | 242 | |
| McLean | 66 | 55 | 11 | |
| Menard | 14 | 7 | 7 | |
| Mercer | 23 | 10 | 13 | |
| Monroe | 29 | 14 | 15 | |
| Peoria | 191 | 60 | 131 | |
| Piatt | 30 | 11 | 19 | |
| Rock Island | 145 | 64 | 81 | |
| Sangamon | 225 | 77 | 148 | |
| Stark | 11 | 4 | 7 | |
| St. Clair | 172 | 160 | 12 | |
| Tazewell | 97 | 41 | 56 | |
| Vermilion | 86 | 35 | 51 | |
| Will | 501 | 260 | 241 | |
| Winnebago | 282 | 110 | 172 | |
| Woodford | 38 | 35 | 3 | |
| Nonmetropolitan Counties | Adams | 63 | 26 | 37 |
| Alexander | 9 | 8 | 1 | |
| Brown | 6 | 5 | 1 | |
| Bureau | 35 | 21 | 14 | |
| Carroll | 21 | 8 | 13 | |
| Cass | 8 | 7 | 1 | |
| Christian | 35 | 18 | 17 | |
| Clark | 16 | 9 | 7 | |
| Clay | 14 | 8 | 6 | |
| Coles | 44 | 25 | 19 | |
| Crawford | 20 | 9 | 11 | |
| Cumberland | 19 | 7 | 12 | |
| De Witt | 42 | 16 | 26 | |
| Douglas | 25 | 11 | 14 | |
| Edgar | 19 | 8 | 11 | |
| Edwards | 9 | 4 | 5 | |
| Effingham | 44 | 18 | 26 | |
| Fayette | 26 | 10 | 16 | |
| Franklin | 39 | 17 | 22 | |
| Fulton | 41 | 21 | 20 | |
| Gallatin | 2 | 2 | 0 | |
| Greene | 13 | 6 | 7 | |
| Hamilton | 7 | 3 | 4 | |
| Hancock | 22 | 10 | 12 | |
| Hardin | 7 | 4 | 3 | |
| Henderson | 15 | 8 | 7 | |
| Iroquois | 31 | 18 | 13 | |
| Jackson | 71 | 25 | 46 | |
| Jasper | 19 | 9 | 10 | |
| Jefferson | 56 | 24 | 32 | |
| Jo Daviess | 38 | 19 | 19 | |
| Johnson | 13 | 8 | 5 | |
| Knox | 55 | 52 | 3 | |
| La Salle | 98 | 46 | 52 | |
| Lawrence | 15 | 4 | 11 | |
| Lee | 41 | 20 | 21 | |
| Livingston | 53 | 30 | 23 | |
| Logan | 31 | 19 | 12 | |
| Marion | 36 | 12 | 24 | |
| Mason | 20 | 9 | 11 | |
| Massac | 28 | 12 | 16 | |
| McDonough | 25 | 13 | 12 | |
| Montgomery | 25 | 13 | 12 | |
| Morgan | 36 | 15 | 21 | |
| Moultrie | 18 | 10 | 8 | |
| Ogle | 62 | 43 | 19 | |
| Perry | 33 | 11 | 22 | |
| Pike | 28 | 11 | 17 | |
| Pope | 3 | 3 | 0 | |
| Pulaski | 14 | 10 | 4 | |
| Putnam | 11 | 6 | 5 | |
| Randolph | 26 | 11 | 15 | |
| Richland | 19 | 7 | 12 | |
| Saline | 45 | 10 | 35 | |
| Schuyler | 4 | 4 | 0 | |
| Scott | 7 | 3 | 4 | |
| Shelby | 24 | 12 | 12 | |
| Stephenson | 70 | 25 | 45 | |
| Union | 16 | 9 | 7 | |
| Wabash | 5 | 4 | 1 | |
| Warren | 18 | 9 | 9 | |
| Washington | 12 | 5 | 7 | |
| Wayne | 22 | 11 | 11 | |
| White | 9 | 8 | 1 | |
| Whiteside | 63 | 24 | 39 | |
| Williamson | 66 | 35 | 31 |
Provides the methodology used in constructing this table and other pertinent information about this table.