Bainbridge Island was formed during the last ice age—13,000 to 15,000 years ago—when the 3,000-foot-thick (910 m) Vashon Glacier scraped out the Puget Sound and Hood Canal basins.
Bainbridge Island, Washington (Wikipedia)Bainbridge Island is a city and island in Kitsap County, Washington, United States. It is located in Puget Sound. The population was 24,825 at the 2020 census, making Bainbridge Island the second largest city in Kitsap County. The city limits encompass the entire island.