
Charlestown
- County:
- Sullivan County
- County Seat:
- No
- Area (mi²):
- 35.764
- State:
- New Hampshire
Charlestown town is located in Sullivan County, New Hampshire. Charlestown town has a 2025 population of 5,009. Charlestown town is currently growing at a rate of 0.7% annually and its population has increased by 4.27% since the most recent census, which recorded a population of 4,804 in 2020.
The average household income in Charlestown town is $81,222 with a poverty rate of 13.51%. The median age in Charlestown town is 47.8 years: 41.7 years for males, and 50.3 years for females.