Total Population in Arapahoe County, CO
ACS 2024 5-Year Estimates
How Arapahoe County Compares
National Distribution
Where Arapahoe County falls among all 3,222 U.S. counties for total population.
■ Arapahoe County: 659,844
Ranking Context
| Rank | County | Value |
|---|---|---|
| #103 | Jefferson County, AL | 667,755 |
| #104 | Providence County, RI | 664,854 |
| #105 | Kent County, MI | 663,150 |
| #106 | Arapahoe County, CO | 659,844 |
| #107 | Ocean County, NJ | 654,362 |
| #108 | Bucks County, PA | 647,461 |
| #109 | Monmouth County, NJ | 645,353 |
Total Population in Arapahoe County, Colorado
Arapahoe County, Colorado has a total population of 659,844, which ranks #106 of 3,222 out of 3,222 counties nationwide. This is 99.8% below the national value of 330M.
Within Colorado, Arapahoe County ranks #3 of 64 out of 64 counties. This places it in the 97th percentile nationally.
Total population count from the American Community Survey. All data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates for 2024.
About this data
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.