Jamestown
- County:
- Boulder County
- County Seat:
- No
- Area (mi²):
- 0.574
- State:
- Colorado
Jamestown is a town located in Boulder County, Colorado. Jamestown has a 2026 population of 246. Jamestown is currently declining at a rate of -0.4% annually and its population has decreased by -3.91% since the most recent census, which recorded a population of 256 in 2020.