Bennett County, South Dakota

Bennett County population, land area and income

Bennett County had 3,289 residents in the Census Vintage 2024 estimate, on 1,184.6 square miles of land. It ranks 45th of 66 in South Dakota by population and 23rd by land area. That works out to 2.8 people per square mile, below the US average of 96.3, and in the bottom quarter nationally.

The median county-equivalent in South Dakota has 5,296 residents; Bennett County is somewhat smaller.

Its SAIPE 2023 median household income of $48,547 is in the bottom quarter among 3,143 counties with an estimate.

How Bennett County's population changed since 2020

Bennett County lost 103 residents between the July 2020 and July 2024 estimates, a drop of 3.0%. That ranks 60th of 66 in South Dakota for growth. The median South Dakota county changed by +0.8%, and the state as a whole by +4.1%.

Since the April 2020 estimates base, Bennett County recorded 201 births and 179 deaths, a natural change of +22. Net international migration added +29 and net domestic migration, people moving to or from other US counties, came to -147. The largest single component was domestic migration, which removed 147 people.

Where Bennett County is

The Census internal point of Bennett County is at 43.186900, -101.677200. It sits in UTM zone 14N. The map shades South Dakota's 66 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Bennett County outlined. Dots are towns of 1,000+ people with residents in it.

Towns in Bennett County

No incorporated place of 1,000 or more people has residents in Bennett County. Its 3,289 residents live in smaller towns, census-designated places, or unincorporated land, which the subcounty estimates do not list at this size.

Counties bordering Bennett County

The Census 2024 county adjacency file lists 5 neighbors for Bennett County, including 1 across a state line. The most populous is Oglala Lakota County, SD, with 13,360 residents. Distances run between Census internal points in a straight line.

• Oglala Lakota County

  13,360 people

  46 mi WNW

• Todd County

  9,172 people

  49 mi E

• NE

  Cherry County, NE

  5,558 people

  53 mi SE

• Jackson County

  2,737 people

  34 mi N

• Mellette County

  1,834 people

  54 mi ENE

Distance to Pierre and the nearest big city

Pierre is 105.2 miles NE of Bennett County's internal point in a straight line. The nearest place of 100,000 or more is Greeley, CO (population 114,363), 249.1 miles away. The nearest place of 10,000 or more is Box Elder, SD (population 13,887), 94.9 miles away.

Bennett County FIPS code

The FIPS code of Bennett County is 46007: state code 46 for South Dakota plus county code 007. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $48,547.