Der US-Bundesstaat Utah ist in 29 Countys unterteilt.
| County | Einwohner 2010 | Verwaltungssitz | Einwohner 2010 |
|---|---|---|---|
| Beaver | 6.629 | Beaver | 3.112 |
| Box Elder | 49.975 | Brigham City | 17.899 |
| Cache | 112.656 | Logan | 48.174 |
| Carbon | 21.403 | Price | 8.715 |
| Daggett | 1.059 | Manila | 310 |
| Davis | 306.479 | Farmington | 18.275 |
| Duchesne | 18.607 | Duchesne | 1.690 |
| Emery | 10.976 | Castle Dale | 1.630 |
| Garfield | 5.172 | Panguitch | 1.520 |
| Grand | 9.225 | Moab | 5.046 |
| Iron | 46.163 | Parowan | 2.790 |
| Juab | 10.246 | Nephi | 5.389 |
| Kane | 7.125 | Kanab | 4.312 |
| Millard | 12.503 | Fillmore | 2.435 |
| Morgan | 9.469 | Morgan | 3.687 |
| Piute | 1.556 | Junction | 191 |
| Rich | 2.264 | Randolph | 464 |
| Salt Lake | 1.029.655 | Salt Lake City | 186.440 |
| San Juan | 14.746 | Monticello | 1.972 |
| Sanpete | 27.822 | Manti | 3.276 |
| Sevier | 20.802 | Richfield | 7.551 |
| Summit | 36.324 | Coalville | 1.363 |
| Tooele | 58.218 | Tooele | 31.605 |
| Uintah | 32.588 | Vernal | 9.089 |
| Utah | 516.564 | Provo | 112.488 |
| Wasatch | 23.530 | Heber City | 11.362 |
| Washington | 138.115 | St. George | 72.897 |
| Wayne | 2.778 | Loa | 572 |
| Weber | 231.236 | Ogden | 82.825 |