| Metropolitan/Nonmetropolitan | County | Total law enforcement employees | Total officers | Total civilians |
|---|---|---|---|---|
| Metropolitan Counties | Benton | 26 | 12 | 14 |
| Black Hawk | 132 | 100 | 32 | |
| Bremer | 29 | 12 | 17 | |
| Dallas | 42 | 17 | 25 | |
| Dubuque | 81 | 73 | 8 | |
| Grundy | 15 | 11 | 4 | |
| Guthrie | 11 | 5 | 6 | |
| Harrison | 21 | 9 | 12 | |
| Johnson | 94 | 64 | 30 | |
| Jones | 23 | 10 | 13 | |
| Linn | 169 | 110 | 59 | |
| Madison | 15 | 7 | 8 | |
| Mills | 20 | 11 | 9 | |
| Polk | 355 | 147 | 208 | |
| Pottawattamie | 158 | 47 | 111 | |
| Scott | 165 | 45 | 120 | |
| Story | 82 | 31 | 51 | |
| Warren | 34 | 23 | 11 | |
| Washington | 31 | 18 | 13 | |
| Woodbury | 116 | 32 | 84 | |
| Nonmetropolitan Counties | Adair | 8 | 6 | 2 |
| Adams | 9 | 4 | 5 | |
| Allamakee | 14 | 8 | 6 | |
| Appanoose | 14 | 8 | 6 | |
| Audubon | 8 | 5 | 3 | |
| Boone | 30 | 11 | 19 | |
| Buchanan | 18 | 13 | 5 | |
| Buena Vista | 17 | 9 | 8 | |
| Butler | 18 | 10 | 8 | |
| Calhoun | 11 | 6 | 5 | |
| Carroll | 15 | 9 | 6 | |
| Cass | 14 | 8 | 6 | |
| Cedar | 36 | 10 | 26 | |
| Cerro Gordo | 62 | 20 | 42 | |
| Cherokee | 17 | 6 | 11 | |
| Chickasaw | 14 | 8 | 6 | |
| Clarke | 16 | 5 | 11 | |
| Clay | 17 | 10 | 7 | |
| Clayton | 26 | 13 | 13 | |
| Clinton | 40 | 23 | 17 | |
| Crawford | 12 | 10 | 2 | |
| Davis | 13 | 5 | 8 | |
| Decatur | 11 | 6 | 5 | |
| Delaware | 15 | 10 | 5 | |
| Des Moines | 44 | 21 | 23 | |
| Dickinson | 21 | 9 | 12 | |
| Emmet | 15 | 8 | 7 | |
| Fayette | 33 | 9 | 24 | |
| Floyd | 17 | 10 | 7 | |
| Franklin | 11 | 8 | 3 | |
| Fremont | 18 | 7 | 11 | |
| Greene | 15 | 7 | 8 | |
| Hamilton | 28 | 8 | 20 | |
| Hancock | 8 | 8 | 0 | |
| Hardin | 29 | 10 | 19 | |
| Henry | 26 | 12 | 14 | |
| Howard | 14 | 7 | 7 | |
| Humboldt | 15 | 9 | 6 | |
| Ida | 16 | 9 | 7 | |
| Iowa | 23 | 11 | 12 | |
| Jackson | 15 | 9 | 6 | |
| Jasper | 45 | 14 | 31 | |
| Jefferson | 27 | 8 | 19 | |
| Keokuk | 7 | 4 | 3 | |
| Kossuth | 24 | 9 | 15 | |
| Lee | 30 | 15 | 15 | |
| Louisa | 22 | 10 | 12 | |
| Lucas | 12 | 4 | 8 | |
| Lyon | 28 | 9 | 19 | |
| Mahaska | 24 | 8 | 16 | |
| Marion | 34 | 13 | 21 | |
| Marshall | 56 | 17 | 39 | |
| Mitchell | 17 | 6 | 11 | |
| Monona | 17 | 7 | 10 | |
| Monroe | 13 | 5 | 8 | |
| Muscatine | 22 | 22 | 0 | |
| O'Brien | 30 | 11 | 19 | |
| Osceola | 15 | 9 | 6 | |
| Page | 15 | 8 | 7 | |
| Palo Alto | 15 | 8 | 7 | |
| Plymouth | 27 | 10 | 17 | |
| Pocahontas | 13 | 7 | 6 | |
| Poweshiek | 19 | 11 | 8 | |
| Ringgold | 10 | 6 | 4 | |
| Sac | 18 | 7 | 11 | |
| Shelby | 14 | 8 | 6 | |
| Sioux | 36 | 13 | 23 | |
| Tama | 22 | 12 | 10 | |
| Taylor | 9 | 5 | 4 | |
| Union | 11 | 5 | 6 | |
| Van Buren | 10 | 5 | 5 | |
| Wapello | 39 | 9 | 30 | |
| Wayne | 11 | 6 | 5 | |
| Webster | 35 | 19 | 16 | |
| Winnebago | 9 | 6 | 3 | |
| Winneshiek | 23 | 10 | 13 | |
| Worth | 18 | 7 | 11 | |
| Wright | 19 | 7 | 12 |
Provides the methodology used in constructing this table and other pertinent information about this table.