Utah Population By County in 2018

Updated on January 27, 2024.

Based on the US Census Vintage data estimates, in 2018, the population of Utah was 3,155,153. Among all Utah counties, Salt Lake[object Promise] had the highest population (1,148,949), followed by Utah[object Promise] (622,076), and Davis[object Promise] (351,154). Daggett[object Promise] was the least populated county (984).

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 2018
Utah Population By County in 2018
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County Population % of State Population
Beaver 6620 0.21
Box Elder 54807 1.74
Cache 126574 4.01
Carbon 20248 0.64
Daggett 984 0.03
Davis 351154 11.13
Duchesne 19902 0.63
Emery 10039 0.32
Garfield 4970 0.16
Grand 9715 0.31
Iron 52959 1.68
Juab 11639 0.37
Kane 7663 0.24
Millard 12941 0.41
Morgan 11971 0.38
Piute 1434 0.05
Rich 2455 0.08
Salt Lake 1148949 36.42
San Juan 15336 0.49
Sanpete 30529 0.97
Sevier 21516 0.68
Summit 41879 1.33
Tooele 69946 2.22
Uintah 35407 1.12
Utah 622076 19.72
Wasatch 33278 1.06
Washington 172051 5.45
Wayne 2657 0.08
Weber 255454 8.10