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Rapid City, SD Metro Area Demographics

Rapid City, SD Metro Area is the 300th most populous of 935 metro areas in the United States, with 147,392 residents across 7,805 square miles. That is about 19 people per square mile.

At the 2020 census

Population 147,392
Land area 7,805 sq mi
Density 19 / sq mi

Data: 2020 Census · American Community Survey 2024

How Rapid City, SD Metro Area compares to the US

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

Central Location: Rapid City, SD Metro Area

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

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

Counties in the Rapid City, SD Metro Area area

Name Population Sq mi Per sq mi
Pennington County, SD 109,222 2,776.8 39
Meade County 29,852 3,470.9 9
Custer County 8,318 1,556.9 5

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About this page

This page shows demographics for a US metropolitan or micropolitan area from the 2020 census and the American Community Survey: population, land area, density, and how the area compares to national averages.

Metro areas are built from whole counties, listed below. Statistics aggregate the member counties' census tracts.

Read how BlockAtlas computes population within an area →