
Sister Bay
- County:
- Door County
- County Seat:
- No
- Area (mi²):
- 2.667
- State:
- Wisconsin
Sister Bay is a village located in Door County, Wisconsin. Sister Bay has a 2025 population of 1,173. Sister Bay is currently growing at a rate of 0.34% annually and its population has increased by 1.82% since the most recent census, which recorded a population of 1,152 in 2020.
The average household income in Sister Bay is $88,514 with a poverty rate of 25.13%. The median age in Sister Bay is 54.8 years: 45.6 years for males, and 62.7 years for females.