
Allenspark
- County:
- Boulder County
- County Seat:
- No
- Area (mi²):
- 11.938
- State:
- Colorado
Allenspark is a CDP located in Boulder County, Colorado. Allenspark has a 2025 population of 646. Allenspark is currently growing at a rate of 1.25% annually and its population has increased by 39.22% since the most recent census, which recorded a population of 464 in 2020.
The average household income in Allenspark is $166,747 with a poverty rate of 5.45%. The median age in Allenspark is 50.5 years: 46.4 years for males, and 50.9 years for females.