| Metropolitan/Nonmetropolitan Counties | County | Total law enforcement employees | Total officers | Total civilians |
|---|---|---|---|---|
| Metropolitan Counties | Benton | 26 | 12 | 14 |
| Black Hawk | 132 | 100 | 32 | |
| Bremer | 30 | 12 | 18 | |
| Dallas | 45 | 21 | 24 | |
| Dubuque | 83 | 71 | 12 | |
| Grundy | 16 | 12 | 4 | |
| Guthrie | 12 | 5 | 7 | |
| Harrison | 25 | 9 | 16 | |
| Johnson | 97 | 63 | 34 | |
| Jones | 24 | 10 | 14 | |
| Linn | 163 | 108 | 55 | |
| Madison | 16 | 7 | 9 | |
| Mills | 19 | 10 | 9 | |
| Polk | 450 | 140 | 310 | |
| Pottawattamie | 179 | 49 | 130 | |
| Scott | 165 | 43 | 122 | |
| Story | 81 | 30 | 51 | |
| Warren | 29 | 19 | 10 | |
| Washington | 43 | 18 | 25 | |
| Woodbury | 117 | 33 | 84 | |
| Nonmetropolitan Counties | Adair | 9 | 6 | 3 |
| Adams | 10 | 6 | 4 | |
| Allamakee | 15 | 8 | 7 | |
| Appanoose | 9 | 8 | 1 | |
| Audubon | 8 | 5 | 3 | |
| Boone | 32 | 11 | 21 | |
| Buchanan | 28 | 12 | 16 | |
| Buena Vista | 26 | 9 | 17 | |
| Butler | 20 | 11 | 9 | |
| Calhoun | 11 | 6 | 5 | |
| Carroll | 10 | 9 | 1 | |
| Cass | 16 | 8 | 8 | |
| Cedar | 35 | 10 | 25 | |
| Cerro Gordo | 72 | 19 | 53 | |
| Cherokee | 17 | 6 | 11 | |
| Chickasaw | 14 | 8 | 6 | |
| Clarke | 18 | 6 | 12 | |
| Clay | 18 | 10 | 8 | |
| Clayton | 26 | 11 | 15 | |
| Clinton | 42 | 24 | 18 | |
| Crawford | 14 | 12 | 2 | |
| Davis | 13 | 5 | 8 | |
| Decatur | 11 | 6 | 5 | |
| Des Moines | 49 | 22 | 27 | |
| Emmet | 18 | 8 | 10 | |
| Fayette | 32 | 10 | 22 | |
| Floyd | 16 | 9 | 7 | |
| Franklin | 11 | 8 | 3 | |
| Fremont | 18 | 7 | 11 | |
| Greene | 15 | 7 | 8 | |
| Hamilton | 30 | 9 | 21 | |
| Hancock | 15 | 8 | 7 | |
| Hardin | 29 | 10 | 19 | |
| Henry | 29 | 12 | 17 | |
| Howard | 8 | 7 | 1 | |
| Humboldt | 15 | 9 | 6 | |
| Ida | 16 | 9 | 7 | |
| Iowa | 24 | 11 | 13 | |
| Jackson | 14 | 8 | 6 | |
| Jasper | 46 | 14 | 32 | |
| Jefferson | 28 | 10 | 18 | |
| Keokuk | 8 | 4 | 4 | |
| Kossuth | 24 | 9 | 15 | |
| Lee | 30 | 15 | 15 | |
| Louisa | 22 | 11 | 11 | |
| Lucas | 13 | 5 | 8 | |
| Lyon | 25 | 10 | 15 | |
| Mahaska | 24 | 8 | 16 | |
| Marion | 34 | 12 | 22 | |
| Marshall | 55 | 18 | 37 | |
| Mitchell | 18 | 6 | 12 | |
| Monroe | 12 | 5 | 7 | |
| Montgomery | 19 | 8 | 11 | |
| Muscatine | 65 | 22 | 43 | |
| O'Brien | 30 | 11 | 19 | |
| Osceola | 13 | 8 | 5 | |
| Page | 15 | 8 | 7 | |
| Palo Alto | 16 | 8 | 8 | |
| Plymouth | 27 | 10 | 17 | |
| Pocahontas | 14 | 7 | 7 | |
| Poweshiek | 21 | 11 | 10 | |
| Ringgold | 10 | 6 | 4 | |
| Sac | 18 | 7 | 11 | |
| Shelby | 14 | 8 | 6 | |
| Sioux | 35 | 13 | 22 | |
| Tama | 22 | 12 | 10 | |
| Taylor | 9 | 5 | 4 | |
| Union | 11 | 5 | 6 | |
| Van Buren | 11 | 5 | 6 | |
| Wapello | 38 | 9 | 29 | |
| Wayne | 11 | 6 | 5 | |
| Webster | 36 | 18 | 18 | |
| Winnebago | 9 | 6 | 3 | |
| Winneshiek | 23 | 10 | 13 | |
| Worth | 19 | 8 | 11 | |
| Wright | 20 | 8 | 12 |
Provides the methodology used in constructing this table and other pertinent information about this table.