| Metropolitan/Nonmetropolitan | County | Total law enforcement employees | Total officers | Total civilians |
|---|---|---|---|---|
| Metropolitan Counties | Benton | 23 | 9 | 14 |
| Black Hawk | 136 | 102 | 34 | |
| Bremer | 28 | 12 | 16 | |
| Dallas | 43 | 17 | 26 | |
| Dubuque | 73 | 63 | 10 | |
| Grundy | 16 | 12 | 4 | |
| Guthrie | 11 | 5 | 6 | |
| Harrison | 25 | 9 | 16 | |
| Johnson | 86 | 59 | 27 | |
| Jones | 23 | 10 | 13 | |
| Linn | 170 | 112 | 58 | |
| Madison | 13 | 6 | 7 | |
| Mills | 28 | 11 | 17 | |
| Polk | 325 | 166 | 159 | |
| Pottawattamie | 148 | 46 | 102 | |
| Scott | 162 | 44 | 118 | |
| Story | 82 | 31 | 51 | |
| Warren | 33 | 23 | 10 | |
| Washington | 32 | 15 | 17 | |
| Woodbury | 110 | 31 | 79 | |
| Nonmetropolitan Counties | Adair | 8 | 6 | 2 |
| Adams | 8 | 4 | 4 | |
| Allamakee | 14 | 8 | 6 | |
| Appanoose | 16 | 9 | 7 | |
| Audubon | 8 | 4 | 4 | |
| Boone | 23 | 10 | 13 | |
| Buchanan | 28 | 11 | 17 | |
| Buena Vista | 10 | 9 | 1 | |
| Butler | 18 | 11 | 7 | |
| Calhoun | 11 | 6 | 5 | |
| Carroll | 16 | 10 | 6 | |
| Cass | 10 | 7 | 3 | |
| Cedar | 36 | 11 | 25 | |
| Cerro Gordo | 50 | 17 | 33 | |
| Cherokee | 15 | 5 | 10 | |
| Chickasaw | 13 | 8 | 5 | |
| Clarke | 19 | 6 | 13 | |
| Clay | 17 | 10 | 7 | |
| Clayton | 25 | 12 | 13 | |
| Clinton | 40 | 23 | 17 | |
| Crawford | 12 | 10 | 2 | |
| Davis | 10 | 5 | 5 | |
| Decatur | 11 | 6 | 5 | |
| Delaware | 11 | 10 | 1 | |
| Des Moines | 42 | 21 | 21 | |
| Dickinson | 17 | 8 | 9 | |
| Emmet | 17 | 8 | 9 | |
| Fayette | 27 | 10 | 17 | |
| Floyd | 20 | 10 | 10 | |
| Franklin | 11 | 8 | 3 | |
| Fremont | 18 | 7 | 11 | |
| Greene | 14 | 7 | 7 | |
| Hamilton | 29 | 9 | 20 | |
| Hancock | 10 | 8 | 2 | |
| Hardin | 28 | 10 | 18 | |
| Henry | 26 | 12 | 14 | |
| Howard | 15 | 8 | 7 | |
| Humboldt | 12 | 9 | 3 | |
| Ida | 13 | 7 | 6 | |
| Iowa | 21 | 11 | 10 | |
| Jackson | 10 | 10 | 0 | |
| Jasper | 43 | 14 | 29 | |
| Jefferson | 27 | 8 | 19 | |
| Keokuk | 9 | 6 | 3 | |
| Kossuth | 24 | 9 | 15 | |
| Lee | 28 | 15 | 13 | |
| Louisa | 19 | 8 | 11 | |
| Lucas | 13 | 5 | 8 | |
| Lyon | 30 | 10 | 20 | |
| Mahaska | 24 | 9 | 15 | |
| Marion | 24 | 11 | 13 | |
| Marshall | 54 | 18 | 36 | |
| Mitchell | 16 | 6 | 10 | |
| Monona | 18 | 8 | 10 | |
| Monroe | 12 | 5 | 7 | |
| Montgomery | 24 | 8 | 16 | |
| Muscatine | 23 | 23 | 0 | |
| O'Brien | 29 | 11 | 18 | |
| Osceola | 13 | 8 | 5 | |
| Page | 14 | 7 | 7 | |
| Palo Alto | 15 | 8 | 7 | |
| Plymouth | 27 | 10 | 17 | |
| Pocahontas | 13 | 7 | 6 | |
| Poweshiek | 18 | 11 | 7 | |
| Ringgold | 11 | 6 | 5 | |
| Sac | 14 | 6 | 8 | |
| Shelby | 13 | 7 | 6 | |
| Sioux | 35 | 13 | 22 | |
| Tama | 21 | 12 | 9 | |
| Taylor | 10 | 6 | 4 | |
| Union | 11 | 5 | 6 | |
| Van Buren | 11 | 5 | 6 | |
| Wapello | 40 | 10 | 30 | |
| Wayne | 10 | 5 | 5 | |
| Webster | 33 | 16 | 17 | |
| Winnebago | 13 | 5 | 8 | |
| Winneshiek | 23 | 10 | 13 | |
| Worth | 16 | 5 | 11 | |
| Wright | 18 | 7 | 11 |
Provides the methodology used in constructing this table and other pertinent information about this table.