Utah County area

Population and density of Utah County

The Census Bureau estimates that 759,859 people lived in Utah County on July 1, 2025. That ranks #88 of 3,222 county equivalents nationally and #2 of 29 in Utah. Since the April 1, 2020 estimates base of 659,392, the population has grown by 100,467 (+15.2%), compared with +8.2% for Utah as a whole.

With 2,004.5 square miles of land, that is 379 people per square mile (146 per km²), placing Utah County #428 nationally for density and #4 in Utah. The median county equivalent has 47 people per square mile; the Utah median is 11. Put another way, there are about 1.7 acres of land per resident.

U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.

Cities and towns in Utah County

26 incorporated places lie at least partly in Utah County. Together they are home to 751,682 people (98.9%); the other 8,177 (1.1%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Provo city, with 114,527 residents in the county. By land, Eagle Mountain city is the largest at 51.2 mi². Among places with at least 1,000 residents in 2020, Saratoga Springs city grew fastest since then (+62.8%).

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Utah County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Utah County is a central county of the Provo-Orem-Lehi, UT Metropolitan Statistical Area. Its 2 county equivalents have 773,426 residents on 5,396.3 square miles of land; Utah County accounts for 37.1% of the land and 98.2% of the residents. By combined land it ranks #44 of 393 metropolitan areas, and #82 by population. It belongs to the Salt Lake City-Provo-Orem, UT-ID Combined Statistical Area.

ZIP codes

26 ZIP Code Tabulation Areas have land in Utah County; 24 of them have most of their land inside the county, and the others mainly cover neighboring areas.

8400384004840058401384020840428404384045840578405884059840628409784601846028460484606846268462984633846518465384655846608466384664

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Utah County

Utah County shares a land border with 7 county equivalents. It has more land than 4 of them. The largest neighbor is Tooele County (7,040.3 mi²) and the smallest is Salt Lake County (752.7 mi²). Together with its neighbors, Utah County forms a block of 20,670.9 mi² of land, of which it holds 9.7%.

How big is Utah County compared with U.S. states?

Utah County has more land than 2 of the 50 states. It is about 1 times the land area of Delaware (1,948.6 mi²), while Connecticut, the next larger state, has 2.4 times as much land (4,842.5 mi²). Utah’s county land could hold about 41 areas the size of Utah County.

Another way to picture it: the same land area would fill a square about 44.8 miles (72.1 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.

State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.

What stands out about Utah County?

Utah County has more land than 2,937 of the other 3,221 county equivalents in the dataset.

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places Utah County at #294 nationally by total area, 9 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.

Its water share is 6.5%, compared with a national county-equivalent median of 1.2% — 5.4 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside Utah County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.