
Dorchester
- County:
- Grafton County
- County Seat:
- No
- Area (mi²):
- 44.612
- State:
- New Hampshire
Dorchester is located in Grafton County, New Hampshire. Dorchester has a 2025 population of 336. Dorchester is currently declining at a rate of -0.88% annually and its population has decreased by -0.3% since the most recent census, which recorded a population of 337 in 2020.
The average household income in Dorchester is $88,404 with a poverty rate of 17.4%. The median age in Dorchester is 56.1 years: 63 years for males, and 50.4 years for females.