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Madison-Janesville-Beloit, WI Combined Statistical Area Demographics

Madison-Janesville-Beloit, WI Combined Statistical Area is the 66th most populous of 184 combined statistical areas in the United States, with 873,153 residents across 4,859 square miles. That is about 180 people per square mile.

At the 2020 census

Population 873,153
Land area 4,859 sq mi
Density 180 / sq mi

Data: 2020 Census · American Community Survey 2024

How Madison-Janesville-Beloit, WI Combined Statistical Area compares to the US

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

Central Location: Madison-Janesville-Beloit, WI Combined Statistical Area

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

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Counties in the Madison-Janesville-Beloit, WI Combined Statistical Area area

Name Population Sq mi Per sq mi
Dane County, WI 561,504 1,196.5 469
Rock County 163,687 718.2 228
County Sauk 65,763 830.9 79
Columbia County 58,490 765.6 76
County Green 37,093 584.0 64
County Iowa 23,709 762.6 31

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About this page

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

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

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