Ranking of Utah Counties By Population in 2021
Updated on June 18, 2025.
Based on the US Census Vintage data estimates, in 2021, the Population for Utah was 3.34M. Among all Utah counties, Salt Lake County had the highest population (1.19M), followed by Utah County (686.04K), and Davis County (367.53K).
The chart below shows the top 10 counties, and the table below shows the ranking of all Utah counties.
You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.
Related Topics: Utah Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage), 2021 Census.
See this for other years:
Ranking of Utah Counties By Population in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Salt Lake County | 1186513 |
| 2 | Utah County | 686038 |
| 3 | Davis County | 367529 |
| 4 | Weber County | 266613 |
| 5 | Washington County | 191552 |
| 6 | Cache County | 137470 |
| 7 | Tooele County | 76777 |
| 8 | Iron County | 60520 |
| 9 | Box Elder County | 59694 |
| 10 | Summit County | 43182 |
| 11 | Wasatch County | 36257 |
| 12 | Uintah County | 36235 |
| 13 | Sanpete County | 29128 |
| 14 | Sevier County | 21909 |
| 15 | Carbon County | 20355 |
| 16 | Duchesne County | 19800 |
| 17 | San Juan County | 14494 |
| 18 | Millard County | 13189 |
| 19 | Morgan County | 12668 |
| 20 | Juab County | 12214 |
| 21 | Emery County | 9967 |
| 22 | Grand County | 9680 |
| 23 | Kane County | 7981 |
| 24 | Beaver County | 7216 |
| 25 | Garfield County | 5122 |
| 26 | Rich County | 2599 |
| 27 | Wayne County | 2563 |
| 28 | Piute County | 1491 |
| 29 | Daggett County | 982 |