Big Stone County area

Population and density of Big Stone County

The Census Bureau estimates that 5,054 people lived in Big Stone County on July 1, 2025. That ranks #2,889 of 3,222 county equivalents nationally and #83 of 87 in Minnesota. Since the April 1, 2020 estimates base of 5,168, the population has declined by 114 (−2.2%), compared with +2.2% for Minnesota as a whole.

With 499.1 square miles of land, that is 10 people per square mile (3.9 per km²), placing Big Stone County #2,638 nationally for density and #72 in Minnesota. The median county equivalent has 47 people per square mile; the Minnesota median is 27. Put another way, there are about 63 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 Big Stone County

Big Stone County is divided into 22 municipalities and townships. In Minnesota, county subdivisions are local governments, and together they cover all of the county’s land and residents.

The most populous is Ortonville city, with 1,967 residents (38.9% of the county). The largest by land is Akron township, at 48.9 mi², or 9.8% of the county’s land.

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each subdivision inside Big Stone County. Land: 2026 Census Gazetteer. How communities are listed.

Metropolitan area

Big Stone 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

11 ZIP Code Tabulation Areas have land in Big Stone County; 7 of them have most of their land inside the county, and the others mainly cover neighboring areas.

5620856210562115621956221562255622756236562405627656278

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 Big Stone County

Big Stone County shares a land border with 6 county equivalents, including 2 in South Dakota. Each of them has more land than Big Stone County. The largest neighbor is Roberts County (1,101.1 mi²) and the smallest is Stevens County (563.7 mi²). Together with its neighbors, Big Stone County forms a block of 4,926.2 mi² of land, of which it holds 10.1%.

How big is Big Stone County compared with U.S. states?

Big Stone County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.1 times as much. Minnesota’s county land could hold about 160 areas the size of Big Stone County.

Another way to picture it: the same land area would fill a square about 22.3 miles (36 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 Big Stone County?

Big Stone County has more land than 1,137 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 Big Stone County at #2,078 nationally by total area, 7 places closer to the top than its land rank. The water assigned to this geography moves it ahead of some county equivalents with more land.

Its water share is 5.5%, compared with a national county-equivalent median of 1.2% — 4.3 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 Big Stone 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.