
Barnstead
- County:
- Belknap County
- County Seat:
- No
- Area (mi²):
- 43.06
- State:
- New Hampshire
Barnstead is located in Belknap County, New Hampshire. Barnstead has a 2025 population of 5,074. Barnstead is currently growing at a rate of 0.52% annually and its population has increased by 3.07% since the most recent census, which recorded a population of 4,923 in 2020.
The average household income in Barnstead is $120,769 with a poverty rate of 4.2%. The median age in Barnstead is 43 years: 44.3 years for males, and 42.6 years for females.