Coupeville is a town on Whidbey Island, in Island County, Washington, United States.The population was 1,831 at the 2010 census.
Coupeville was founded in 1852 by Captain Thomas Coupe and is the second oldest town in the State of Washington. The town continues to preserve original pioneer homes with a variety of historic architectures including pioneer Block Houses, Saltbox, and Victorian Queen Anne style. Coupe's original home, built in 1853, is one of the State's oldest.Coupeville was officially incorporated on April 20, 1910.Coupeville is a historic district is within the federal Ebey's Landing National Historical Reserve. The reserve was established by Congress in 1978, as the first and now one of the largest National Historical Reserves in the nation.