Bainbridge Island is a city and island in Kitsap County, Washington, United States, located in Puget Sound.
The island is separated from the Kitsap Peninsula by Port Orchard, with Bremerton lying to the southwest. Bainbridge Island is connected to Seattle via the Washington State Ferries system and to Poulsbo and the Suquamish Indian Reservation by State Route 305, which uses the Agate Pass Bridge.
In July 2005, CNN/Money and Money magazine named Bainbridge Island the second-best place to live in the United States.
In August 2013, Bainbridge Island was recognized by Google with an eCity Award. This award recognizes the strongest online business community in each state.
The population was 23,025 at the 2010 census and an estimated 25,298 in 2019, making Bainbridge Island the second largest city in Kitsap County.
According to a 2007 estimate, the median income for a household in the city was $88,243, and the median income for a family was $108,605. Males had a median income of $65,853 versus $42,051 for females. The per capita income for the city was $37,482. About 3.0% of families and 4.4% of the population were below the poverty line, including 3.8% of those under age 18 and 3.3% of those age 65 or over.