Grapeview is a census-designated place in Mason County, Washington, United States. The population was 954 at the 2010 census. It was part of the former Allyn-Grapeview CDP that was broken up into Allyn and Grapeview in 2010. Grapeview is connected to State Route 3 via Grapeview Loop Road.Grapeview is home to a small Puget Sound Maritime Museum, and the Fair Harbor Marina.From the 1870s to the 1920s, transportation needs for Grapeview and other communities along Case Inlet were once served by a small flotilla of steamboats.