
Bainbridge Island
- County:
- Kitsap County
- County Seat:
- No
- Area (mi²):
- 27.614
- State:
- Washington
Bainbridge Island is a city located in Kitsap County, Washington. Bainbridge Island has a 2025 population of 23,865. Bainbridge Island is currently declining at a rate of -0.81% annually and its population has decreased by -3.91% since the most recent census, which recorded a population of 24,837 in 2020.
The average household income in Bainbridge Island is $228,970 with a poverty rate of 2.73%. The median age in Bainbridge Island is 49 years: 47.9 years for males, and 50.4 years for females.