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 2026 population of 24,618. Bainbridge Island is currently growing at a rate of 0.89% annually but its population has decreased by -0.88% since the most recent census, which recorded a population of 24,837 in 2020.