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Tuesday, 1 July 2025

Riverside County, California

County in California, United States


Riverside County, California
Riverside County, California

Riverside County is a county located in the southern portion of the U.S. state of California. As of the 2020 census, its population was 2,418,185, making it the fourth-most populous county in California and the 10th-most populous in the United States. The county is named for the city of Riverside, which is its county seat.

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