The county of Island is located in Washington and was founded in 1852. There are 82,636 residents in Island who have access to courthouses in Coupeville, Oak Harbor. In general, each county has a full set of courts, from traffic court to superior and appellate court; supreme courts are usually located in the state capital. Washington is part of the 9th federal circuit court as well.
There are 1,831 residents in Coupeville, which is 1.2 square miles and 75ft above sea level.
There are 22,075 residents in Oak Harbor, which is 9.5 square miles and 92ft above sea level. It was settled in May 14, 1915 and is governed by a local government.