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Santa Rosa-Petaluma, CA Metro Area Demographics

Santa Rosa-Petaluma, CA Metro Area is the 110th most populous of 935 metro areas in the United States, with 488,853 residents across 1,575 square miles. That is about 310 people per square mile.

At the 2020 census

Population 488,853
Land area 1,575 sq mi
Density 310 / sq mi

Data: 2020 Census · American Community Survey 2024

How Santa Rosa-Petaluma, CA Metro Area compares to the US

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Central Location: Santa Rosa-Petaluma, CA Metro Area

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

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Counties in the Santa Rosa-Petaluma, CA Metro Area area

Name Population Sq mi Per sq mi
Sonoma County 488,853 1,575.3 310

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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.

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