
Centennial
- County:
- Arapahoe County
- County Seat:
- No
- Area (mi²):
- 30.156
- State:
- Colorado
Centennial is a city located in Arapahoe County, Colorado. Centennial has a 2025 population of 106,007. Centennial is currently declining at a rate of -0.41% annually and its population has decreased by -2.02% since the most recent census, which recorded a population of 108,196 in 2020.
The average household income in Centennial is $163,429 with a poverty rate of 3.15%. The median age in Centennial is 41.8 years: 40.4 years for males, and 43 years for females.