Fastest growing counties in Utah.
County | Rank | Change (2020) | 2024 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Tooele County | 1 | 14.71% | 84,147 | 73,355 |
| Iron County | 2 | 14.21% | 65,914 | 57,713 |
| Juab County | 3 | 13.88% | 13,460 | 11,819 |
| Washington County | 4 | 13.82% | 207,174 | 182,015 |
| Kane County | 5 | 12.4% | 8,647 | 7,693 |
| Piute County | 6 | 11.6% | 1,607 | 1,440 |
| Utah County | 7 | 10.86% | 735,656 | 663,595 |
| Box Elder County | 8 | 10.18% | 63,845 | 57,946 |
| Cache County | 9 | 8.24% | 144,641 | 133,631 |
| Sanpete County | 10 | 8.19% | 30,863 | 28,526 |
| Uintah County | 11 | 7.62% | 38,390 | 35,672 |
| Wasatch County | 12 | 7.52% | 37,691 | 35,055 |
| Rich County | 13 | 7.43% | 2,691 | 2,505 |
| Morgan County | 14 | 6.31% | 13,163 | 12,382 |
| Duchesne County | 15 | 6.08% | 20,812 | 19,620 |
| Garfield County | 16 | 5.23% | 5,370 | 5,103 |
| Sevier County | 17 | 5.06% | 22,645 | 21,554 |
| Weber County | 18 | 4.34% | 274,392 | 262,988 |
| Wayne County | 19 | 3.64% | 2,594 | 2,503 |
| Millard County | 20 | 3.61% | 13,531 | 13,060 |
| Emery County | 21 | 3.53% | 10,195 | 9,847 |
| Davis County | 22 | 3.51% | 376,527 | 363,771 |
| Daggett County | 23 | 1.79% | 969 | 952 |
| Carbon County | 24 | 0.93% | 20,678 | 20,487 |
| Beaver County | 25 | 0.93% | 7,149 | 7,083 |
| Summit County | 26 | -0.04% | 42,473 | 42,489 |
| Salt Lake County | 27 | -0.16% | 1,185,057 | 1,186,983 |
| Grand County | 28 | -0.34% | 9,641 | 9,674 |
| San Juan County | 29 | -1.45% | 14,310 | 14,521 |