San Juan County, county in the state of Washington, United States. As of 2020 county had an estimated population of 17,492 inhabitants. The county was created 151 years ago in 1873. Its county seat is Friday Harbor.
There are 1 city/town in San Juan County, WA. The largest city of San Juan County is Friday Harbor with a population of 2,544.
List of cities, towns, neighborhoods & other populated places in San Juan County.
City Name | Title | Population |
---|---|---|
Friday Harbor | Town in San Juan County, Washington, United States | 2,544 |