| Metropolitan/Nonmetropolitan Counties | County | Total law enforcement employees | Total officers | Total civilians |
|---|---|---|---|---|
| Metropolitan Counties | Benton | 24 | 12 | 12 |
| Black Hawk | 135 | 102 | 33 | |
| Bremer | 29 | 11 | 18 | |
| Dallas | 45 | 21 | 24 | |
| Dubuque | 83 | 71 | 12 | |
| Grundy | 16 | 12 | 4 | |
| Guthrie | 11 | 5 | 6 | |
| Harrison | 19 | 9 | 10 | |
| Johnson | 96 | 64 | 32 | |
| Jones | 23 | 10 | 13 | |
| Linn | 167 | 107 | 60 | |
| Madison | 15 | 7 | 8 | |
| Mills | 20 | 11 | 9 | |
| Polk | 450 | 136 | 314 | |
| Pottawattamie | 162 | 49 | 113 | |
| Scott | 164 | 44 | 120 | |
| Story | 80 | 30 | 50 | |
| Warren | 34 | 23 | 11 | |
| Washington | 36 | 18 | 18 | |
| Woodbury | 114 | 104 | 10 | |
| Nonmetropolitan Counties | Adair | 11 | 5 | 6 |
| Adams | 11 | 6 | 5 | |
| Allamakee | 14 | 8 | 6 | |
| Appanoose | 15 | 8 | 7 | |
| Audubon | 8 | 5 | 3 | |
| Boone | 27 | 11 | 16 | |
| Buchanan | 19 | 13 | 6 | |
| Buena Vista | 27 | 9 | 18 | |
| Butler | 20 | 11 | 9 | |
| Calhoun | 11 | 6 | 5 | |
| Carroll | 10 | 9 | 1 | |
| Cass | 11 | 8 | 3 | |
| Cedar | 39 | 11 | 28 | |
| Cerro Gordo | 73 | 20 | 53 | |
| Cherokee | 17 | 6 | 11 | |
| Chickasaw | 13 | 8 | 5 | |
| Clarke | 26 | 6 | 20 | |
| Clay | 18 | 10 | 8 | |
| Clayton | 27 | 12 | 15 | |
| Clinton | 42 | 24 | 18 | |
| Crawford | 12 | 10 | 2 | |
| Davis | 12 | 5 | 7 | |
| Decatur | 11 | 6 | 5 | |
| Delaware | 15 | 11 | 4 | |
| Des Moines | 49 | 21 | 28 | |
| Dickinson | 20 | 9 | 11 | |
| Emmet | 15 | 7 | 8 | |
| Fayette | 35 | 11 | 24 | |
| Floyd | 18 | 11 | 7 | |
| Franklin | 11 | 8 | 3 | |
| Fremont | 19 | 8 | 11 | |
| Greene | 15 | 7 | 8 | |
| Hamilton | 31 | 10 | 21 | |
| Hancock | 10 | 8 | 2 | |
| Hardin | 29 | 10 | 19 | |
| Henry | 29 | 12 | 17 | |
| Howard | 14 | 7 | 7 | |
| Humboldt | 9 | 9 | 0 | |
| Ida | 17 | 9 | 8 | |
| Iowa | 25 | 11 | 14 | |
| Jackson | 16 | 9 | 7 | |
| Jasper | 46 | 14 | 32 | |
| Jefferson | 30 | 10 | 20 | |
| Keokuk | 8 | 5 | 3 | |
| Kossuth | 24 | 9 | 15 | |
| Lee | 30 | 15 | 15 | |
| Louisa | 26 | 10 | 16 | |
| Lucas | 13 | 5 | 8 | |
| Lyon | 25 | 11 | 14 | |
| Mahaska | 24 | 9 | 15 | |
| Marion | 33 | 12 | 21 | |
| Marshall | 52 | 18 | 34 | |
| Mitchell | 16 | 6 | 10 | |
| Monroe | 11 | 4 | 7 | |
| Muscatine | 26 | 22 | 4 | |
| O'Brien | 28 | 9 | 19 | |
| Osceola | 13 | 9 | 4 | |
| Page | 14 | 8 | 6 | |
| Palo Alto | 16 | 8 | 8 | |
| Plymouth | 29 | 10 | 19 | |
| Pocahontas | 17 | 8 | 9 | |
| Poweshiek | 23 | 11 | 12 | |
| Ringgold | 11 | 7 | 4 | |
| Sac | 19 | 8 | 11 | |
| Shelby | 14 | 8 | 6 | |
| Sioux | 38 | 14 | 24 | |
| Tama | 23 | 13 | 10 | |
| Taylor | 10 | 10 | 0 | |
| Union | 11 | 5 | 6 | |
| Van Buren | 11 | 5 | 6 | |
| Wapello | 38 | 10 | 28 | |
| Wayne | 16 | 6 | 10 | |
| Webster | 35 | 17 | 18 | |
| Winnebago | 8 | 5 | 3 | |
| Winneshiek | 23 | 10 | 13 | |
| Worth | 20 | 8 | 12 | |
| Wright | 20 | 8 | 12 |
Provides the methodology used in constructing this table and other pertinent information about this table.