Arapahoe County, Colorado - Simple English Wikipedia, the free encyclopedia

Arapahoe County (/əˈræpəhoʊ/ ə-RAP-ə-hoh) is a county in the state of Colorado in the United States. As of the 2020 census, 655,070 people lived there.^[1] That made it the third-most populous county in Colorado. The county seat is Littleton. The most populous city is Aurora.

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