King CountyFor more information about this layer please see the GIS Data Catalog . A comprehensive address file containing a point for every addressable site within King County. It is derived from the E 9-1-1 address layer which was created with the intention of assisting emergency responders locate 9-1-1 wireless callers more efficiently. Address points with the site type: ED (Dry Hydrant), EH (Hydrant), ET(Public Telephone) are not included. The layer is overlayed with the Washington County polygon layer and the King County parcel layer. The layer is joined with KCZipcode table to bring in the USPS Zip+4 data fields. The layer is joined with King County Assessor tables to identify primary addresses for each parcel.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/5aa0a3c77428491da8d73e9d069c10f6_0engKing County GIS Open DataPublicAddresses in King County [Washington (State)--King County]Web servicesWashington (State)--King CountyWashington (State)Last Modified: 2026-01-05