Utah Counties by Population (2026)
2026 Pop.
100K
200K
300K
400K
500K
600K
700K
800K
900K
1M
1.1M
1.2M
Top 5 Most Populous Counties
1,224,378
774,050
383,992
280,131
218,909
| County | 2026 Pop. ↓ | Area (mi²) | Density (/mi²) | Change (2020) |
|---|---|---|---|---|
| Salt Lake County | 1,224,378 | 753 | 1,626 | 3.15% |
| Utah County | 774,050 | 2K | 386 | 16.65% |
| Davis County | 383,992 | 325 | 1,182 | 5.56% |
| Weber County | 280,131 | 611 | 458 | 6.52% |
| Washington County | 218,909 | 2.4K | 90 | 20.28% |
| Cache County | 145,333 | 1.2K | 125 | 8.75% |
| Tooele County | 90,094 | 7K | 13 | 22.83% |
| Iron County | 68,723 | 3.3K | 21 | 19.1% |
| Box Elder County | 66,655 | 5.8K | 12 | 15.03% |
| Summit County | 43,032 | 1.9K | 23 | 1.3% |
| Wasatch County | 39,179 | 1.2K | 33 | 11.75% |
| Uintah County | 38,402 | 4.5K | 8.6 | 7.64% |
| Sanpete County | 32,025 | 1.6K | 20 | 12.26% |
| Sevier County | 23,062 | 1.9K | 12 | 7% |
| Duchesne County | 21,036 | 3.2K | 6.5 | 7.23% |
| Carbon County | 20,760 | 1.5K | 14 | 1.34% |
| San Juan County | 14,585 | 7.8K | 1.9 | 0.44% |
| Millard County | 14,201 | 6.8K | 2.1 | 8.79% |
| Juab County | 13,810 | 3.4K | 4.1 | 16.83% |
| Morgan County | 13,656 | 609 | 22 | 10.26% |
| Emery County | 10,212 | 4.5K | 2.3 | 3.74% |
| Grand County | 9,880 | 3.7K | 2.7 | 2.03% |
| Kane County | 8,703 | 4K | 2.2 | 13.07% |
| Beaver County | 7,240 | 2.6K | 2.8 | 2.13% |
| Garfield County | 5,191 | 5.2K | 1.0 | 1.68% |
| Rich County | 2,634 | 1K | 2.6 | 5.23% |
| Wayne County | 2,565 | 2.5K | 1.0 | 2.4% |
| Piute County | 1,471 | 758 | 1.9 | 2.15% |
| Daggett County | 916 | 697 | 1.3 | -3.68% |
Sources
- US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
- US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
- American Community Survey (2009 - 2013)
- Census QuickFacts
- Historical Populations of States and Counties (1790 - 1990)