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Bennett County, SD Demographics

Bennett County, SD is the 45th most populous of 66 counties in South Dakota, with 3,381 residents across 1,185 square miles. That is about 3 people per square mile.

At the 2020 census

Population 3,381
Land area 1,185 sq mi
Density 3 / sq mi

Data: 2020 Census · American Community Survey 2024

How Bennett County compares to the US

We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.

Central Location: Bennett County, SD

Measured from the county's main population center using 2020 census blocks.

We're computing the drive-time and radius areas around Bennett County, SD — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.

Census tracts in Bennett County, SD

Name Population Sq mi Per sq mi
Census Tract 9412 1,861 1,175.8 2
Census Tract 9410 1,520 8.9 171

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About this page

This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.

Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.

Read how BlockAtlas computes population within an area →