Utah Population By County in 2015

Updated on January 27, 2024.

Based on the US Census Vintage data estimates, in 2015, the population of Utah was 2,983,626. Among all Utah counties, Salt Lake[object Promise] had the highest population (1,102,690), followed by Utah[object Promise] (573,289), and Davis[object Promise] (334,814). Daggett[object Promise] was the least populated county (1,107).

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 2015
Utah Population By County in 2015
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County Population % of State Population
Beaver 6351 0.21
Box Elder 51839 1.74
Cache 119777 4.01
Carbon 20400 0.68
Daggett 1107 0.04
Davis 334814 11.22
Duchesne 20743 0.70
Emery 10360 0.35
Garfield 4966 0.17
Grand 9530 0.32
Iron 48166 1.61
Juab 10560 0.35
Kane 7045 0.24
Millard 12621 0.42
Morgan 11048 0.37
Piute 1489 0.05
Rich 2301 0.08
Salt Lake 1102690 36.96
San Juan 15254 0.51
Sanpete 28663 0.96
Sevier 20872 0.70
Summit 39675 1.33
Tooele 62676 2.10
Uintah 37815 1.27
Utah 573289 19.22
Wasatch 29131 0.98
Washington 154839 5.19
Wayne 2689 0.09
Weber 242916 8.14