Berlin
- County:
- Coos County
- County Seat:
- No
- Area (mi²):
- 61.349
- State:
- New Hampshire
Berlin is a city located in Coos County, New Hampshire. Berlin has a 2026 population of 9,248. Berlin is currently declining at a rate of -0.6% annually and its population has decreased by -1.68% since the most recent census, which recorded a population of 9,406 in 2020.