New Boston
- County:
- Hillsborough County
- County Seat:
- No
- Area (mi²):
- 0.516
- State:
- New Hampshire
New Boston is a CDP located in Hillsborough County, New Hampshire. New Boston has a 2025 population of 269 . New Boston is currently growing at a rate of 7.17% annually and its population has increased by 156.19% since the most recent census, which recorded a population of 105 in 2020.
The median age in New Boston is 58.7 years: 60.2 years for males, and 58.5 years for females. For every 100 females there are 278.8 males.