
Marlborough
- County:
- Cheshire County
- County Seat:
- No
- Area (mi²):
- 1.687
- State:
- New Hampshire
Marlborough is a CDP located in Cheshire County, New Hampshire. Marlborough has a 2025 population of 965. Marlborough is currently declining at a rate of -0.92% annually and its population has decreased by -11.71% since the most recent census, which recorded a population of 1,093 in 2020.
The average household income in Marlborough is $75,200 with a poverty rate of 9.84%. The median age in Marlborough is 50.3 years: 42.4 years for males, and 53.1 years for females.