Utah Population By County in 2018
Updated on December 2, 2021.

According to the US Census Bureau population estimates, there were 3,155,153 people living in Utah in 2018. Salt Lake County was the most populated county with 1,148,949 residents, followed by Utah County with 622,076 residents, and Davis County with 351,154 residents. Daggett County with a population of 984 was the least populated county in Utah in 2018.

Use the map below to interactively explore the population of each county in Utah in 2018. The data can also be explored further by sorting and filtering with the table below.

Hover/Click on the counties to see the values.
Utah Population By County (2018)
See also Population estimate for other years:
Table of Utah Population By County in 2018
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County Population % of State Population
Beaver 6,620 0.21%
Box Elder 54,807 1.74%
Cache 126,574 4.01%
Carbon 20,248 0.64%
Daggett 984 0.03%
Davis 351,154 11.13%
Duchesne 19,902 0.63%
Emery 10,039 0.32%
Garfield 4,970 0.16%
Grand 9,715 0.31%
Iron 52,959 1.68%
Juab 11,639 0.37%
Kane 7,663 0.24%
Millard 12,941 0.41%
Morgan 11,971 0.38%
Piute 1,434 0.05%
Rich 2,455 0.08%
Salt Lake 1,148,949 36.42%
San Juan 15,336 0.49%
Sanpete 30,529 0.97%
Sevier 21,516 0.68%
Summit 41,879 1.33%
Tooele 69,946 2.22%
Uintah 35,407 1.12%
Utah 622,076 19.72%
Wasatch 33,278 1.06%
Washington 172,051 5.45%
Wayne 2,657 0.08%
Weber 255,454 8.10%