
Berlin
- County:
- Green Lake County
- County Seat:
- No
- Area (mi²):
- 5.918
- State:
- Wisconsin
Berlin is a city located in Green Lake County, Wisconsin. Berlin has a 2025 population of 5,636. Berlin is currently growing at a rate of 0.23% annually and its population has increased by 1.13% since the most recent census, which recorded a population of 5,573 in 2020.
The average household income in Berlin is $62,028 with a poverty rate of 17.57%. The median age in Berlin is 41.6 years: 39.5 years for males, and 42.1 years for females.