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What are the fastest-growing counties in Utah?

Tooele County (+19.2%), Washington County (+17.4%) and Iron County (+16.4%) grew fastest in Utah between 2020 and 2025.

Utah as a whole grew 7.8% between 2020 and 2025, to 3,538,904 residents.

Data as of 2025 · updated

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All 29 Utah counties ranked

Utah counties by population growth
RankCountyResidents 2025Change 2020–25Net migration per 1,000, 2025New homes per 1,000, 2025
1Tooele County87,461+19.2%22.06.0
2Washington County213,670+17.4%22.113.4
3Iron County67,141+16.4%15.910.1
4Juab County13,567+14.8%8.67.5
5Utah County759,859+14.5%4.29.5
6Box Elder County65,320+12.7%13.77.0
7Kane County8,597+11.7%14.117.0
8Sanpete County31,453+10.3%10.07.6
9Wasatch County38,514+9.8%9.929.3
10Cache County145,000+8.5%−8.07.7
11Morgan County13,383+8.1%14.514.3
12Millard County14,057+7.7%4.85.2
13Rich County2,687+7.4%−23.830.5
14Uintah County38,278+7.3%−3.34.4
15Duchesne County20,856+6.3%5.26.1
16Sevier County22,827+5.9%7.44.2
17Weber County278,174+5.8%1.05.4
18Davis County381,227+4.8%−0.85.0
19Piute County1,509+4.8%−23.213.9
20Emery County10,177+3.4%3.67.6
21Wayne County2,587+3.3%−9.311.2
22Beaver County7,301+3.0%−15.26.6
23Garfield County5,256+3.0%−13.15.1
24Salt Lake County1,220,916+2.9%−6.65.9
25Summit County43,141+1.6%−10.313.1
26Grand County9,790+1.1%4.512.7
27Carbon County20,680+1.0%6.92.2
28San Juan County14,542+0.1%−1.43.8
–Daggett County934–––

Ranked by the change in Census Bureau population estimates, 2020–2025. 1 county is listed last and not ranked: fewer than 1,000 residents, or no estimate for the same years.

Statewide totals

More county rankings for Utah

Metro areas

Fastest-growing metro areas in Utah · Fastest-growing metro areas in the U.S. · Largest metro areas in Utah

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Questions

Is Utah growing?

Utah as a whole grew 7.8% between 2020 and 2025, to 3,538,904 residents. Statewide figures add up its counties.

What is the fastest-growing county in Utah?

Tooele County, which grew 19.2% between 2020 and 2025 to 87,461 residents (Census Bureau population estimates). Washington County (+17.4%) and Iron County (+16.4%) came next.

Which Utah counties are losing population?

None of the 28 ranked counties lost residents between 2020 and 2025.

Where are people moving in Utah?

For their size, Washington County (22.1 per 1,000 residents), Tooele County (22.0 per 1,000 residents) and Iron County (15.9 per 1,000 residents) drew the most net domestic migration (people moving in from other U.S. counties minus people moving out) in 2025.

Fastest-growing counties in other states

Across the U.S.

Sources and method

Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.