Arapahoe County is Colorado’s first county and the state’s third largest county with a population of 651,215. The County has grown by more than 75,000 people since the 2010 Census. Demographic information is a great way for residents and visitors to learn more about Arapahoe County. The following data was collected from 2018 Census Bureau reports.
Learn more about the characteristics that distinguish Arapahoe County. Get more in-depth information about the County, the district you live in and more.