Dorchester town is located in Grafton County, New Hampshire. Dorchester town has a 2026 population of 335. Dorchester town is currently declining at a rate of -0.59% annually and its population has decreased by -0.3% since the most recent census, which recorded a population of 336 in 2020.
The median age in Dorchester town is 56 years: 65 years for males, and 50.6 years for females. For every 100 females there are 93.4 males.
Data after 2023 is projected based on recent change
Overall: 56 years
Female: 50.6 years
Male: 65 years
There are 364 adults, (163 of whom are seniors) in Dorchester town.
Female: 212 (51.7%)
Male: 198 (48.3%)
The racial composition of Dorchester town includes 83.66% White, 14.39% other race, and smaller percentages for Two or more races and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 343 | 83.66% |
| Other race | 59 | 14.39% |
| Two or more races | 8 | 1.95% |