Poulsbo is a city on Liberty Bay in Kitsap County, Washington, United States. It is the smallest of the four cities in Kitsap County. The population was 11,970 at the 2020 census and an estimated 10,927 in 2018. The Suquamish people have inhabited the surrounding area, called č̓uʔč̓uɬac in Lushootseed, for millennia. After the signing of the Treaty of Point Elliott in 1855, many were moved to the Port Madison Indian Reservation.