
Cooper
- County:
- Washington County
- County Seat:
- No
- Area (mi²):
- 30.704
- State:
- Maine
Cooper is located in Washington County, Maine. Cooper has a 2025 population of 171. Cooper is currently declining at a rate of 0% annually and its population has increased by 0.59% since the most recent census, which recorded a population of 170 in 2020.
The average household income in Cooper is $66,921 with a poverty rate of 14.19%. The median age in Cooper is 51.1 years: 60.4 years for males, and 44.9 years for females.