23 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Salt Lake City | 1 | 222,062 | 200,666 | 1.96% | 2,003 | 111 | City |
| West Valley City | 2 | 137,681 | 139,995 | -0.34% | 3,843 | 36 | City |
| West Jordan | 3 | 116,601 | 117,034 | -0.07% | 3,578 | 33 | City |
| Sandy | 4 | 91,810 | 96,958 | -1.11% | 3,790 | 24 | City |
| South Jordan | 5 | 88,207 | 77,952 | 2.38% | 3,972 | 22 | City |
| Millcreek | 6 | 64,352 | 63,676 | 0.21% | 4,990 | 13 | City |
| Herriman | 7 | 63,887 | 56,209 | 2.46% | 2,765 | 23 | City |
| Taylorsville | 8 | 57,178 | 60,380 | -1.11% | 5,272 | 11 | City |
| Murray | 9 | 50,891 | 50,520 | 0.15% | 4,139 | 12 | City |
| Draper | 10 | 49,951 | 51,023 | -0.43% | 1,762 | 28 | City |
| Riverton | 11 | 47,026 | 45,294 | 0.74% | 3,731 | 13 | City |
| Kearns | 12 | 40,063 | 36,737 | 1.69% | 8,649 | 5 | Township |
| Midvale | 13 | 36,244 | 36,116 | 0.07% | 6,148 | 6 | City |
| Cottonwood Heights | 14 | 32,166 | 33,519 | -0.84% | 3,488 | 9 | City |
| Magna | 15 | 31,910 | 29,262 | 1.69% | 1,603 | 20 | Township |
| Holladay | 16 | 30,268 | 31,866 | -1.05% | 3,558 | 9 | City |
| South Salt Lake | 17 | 26,524 | 26,708 | -0.14% | 3,821 | 7 | City |
| White City | 18 | 6,016 | 5,523 | 1.66% | 6,883 | 1 | Township |
| Emigration Canyon | 19 | 1,598 | 1,465 | 1.65% | 88 | 18 | Township |
| Copperton | 20 | 904 | 828 | 1.69% | 2,897 | 0 | Township |
| Brighton | 21 | 474 | 434 | 1.72% | 30 | 16 | Town |
| Granite | 22 | 396 | 800 | -20.48% | 372 | 1 | CDP |
| Alta | 23 | 228 | 228 | 0% | 50 | 5 | Town |
Salt Lake City is the largest city in Salt Lake County, with a population of 222,062.
Alta is the smallest city in Salt Lake County, with a population of 228.
There are 23 cities in Salt Lake County, Utah.