 The population was 9,200 at the 2010 census and an estimated 10,927 in 2018.The area was historically inhabited by the Suquamish people, many of whom moved to the Port Madison Indian Reservation after the signing of the Treaty of Point Elliott in 1855.Poulsbo was founded in the 1880s by Norwegian immigrant Jørgen Eliason, who was joined by other Scandinavians who relocated from the Midwestern states.