Sanpete County area

Population and density of Sanpete County

The Census Bureau estimates that 31,453 people lived in Sanpete County on July 1, 2025. That ranks #1,444 of 3,222 county equivalents nationally and #13 of 29 in Utah. Since the April 1, 2020 estimates base of 28,437, the population has grown by 3,016 (+10.6%), compared with +8.2% for Utah as a whole.

With 1,589.8 square miles of land, that is 20 people per square mile (7.6 per km²), placing Sanpete County #2,334 nationally for density and #11 in Utah. The median county equivalent has 47 people per square mile; the Utah median is 11. Put another way, there are about 32 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 Sanpete County

13 incorporated places lie at least partly in Sanpete County. Together they are home to 26,373 people (83.8%); the other 5,080 (16.2%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Ephraim city, with 6,393 residents in the county. The county seat, Manti city, has 3,794 residents. Among places with at least 1,000 residents in 2020, Ephraim city grew fastest since then (+13.8%).

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

Metropolitan area

Sanpete County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.

ZIP codes

15 ZIP Code Tabulation Areas have land in Sanpete County, and each lies mostly inside the county.

846218462284623846278462984630846328463484642846438464684647846628466584667

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Sanpete County

Sanpete County shares a land border with 6 county equivalents. It has more land than 1 of them. The largest neighbor is Millard County (6,785.5 mi²) and the smallest is Carbon County (1,479.3 mi²). Together with its neighbors, Sanpete County forms a block of 21,624 mi² of land, of which it holds 7.4%.

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

Sanpete County has more land than 1 of the 50 states. It is about 1.5 times the land area of Rhode Island (1,033.9 mi²), while Delaware, the next larger state, has 1.2 times as much land (1,948.6 mi²). Utah’s county land could hold about 52 areas the size of Sanpete County.

Another way to picture it: the same land area would fill a square about 39.9 miles (64.2 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 Sanpete County?

Sanpete County has more land than 2,841 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 Sanpete County at #420 nationally by total area, 39 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 0.8%, compared with a national county-equivalent median of 1.2% — 0.4 percentage points lower. 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 Sanpete 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.