Utah Population By County in 2021

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2021, the population of Utah was 3,339,113. Among all Utah counties, Salt Lake[object Promise] had the highest population (1,186,440), followed by Utah[object Promise] (685,806), and Davis[object Promise] (367,446). Daggett[object Promise] was the least populated county (977).

Hover over or click on the counties in the map below to see the populations. The data can also be found in a table below. You can use the table to sort, filter, and explore the data further.

You can see similar information for other states and by state for the United States.

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Utah Population By County in 2021
Utah Population By County in 2021
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County Population % of State Population
Beaver 7203 0.22
Box Elder 59693 1.79
Cache 137429 4.12
Carbon 20361 0.61
Daggett 977 0.03
Davis 367446 11.00
Duchesne 19806 0.59
Emery 9963 0.30
Garfield 5149 0.15
Grand 9665 0.29
Iron 60522 1.81
Juab 12192 0.37
Kane 7999 0.24
Millard 13175 0.40
Morgan 12667 0.38
Piute 1482 0.04
Rich 2581 0.08
Salt Lake 1186440 35.53
San Juan 14476 0.43
Sanpete 29138 0.87
Sevier 21918 0.66
Summit 43168 1.29
Tooele 76734 2.30
Uintah 36232 1.09
Utah 685806 20.54
Wasatch 36260 1.09
Washington 191476 5.73
Wayne 2567 0.08
Weber 266588 7.98