ZIP Codes

Finding the correct ZIP Code is important for mailing addresses, location searches, service areas, and community information. This guide provides a complete list of King County ZIP Codes with the cities associated with each area. The ZIP Code table below is organized in ascending order to help residents, businesses, and visitors quickly find the information they need.

Understanding King County ZIP Code Areas

King County includes a wide range of communities, from major urban areas to smaller residential and rural locations. ZIP Codes help identify specific mailing regions and are commonly used when completing forms, locating services, verifying addresses, and organizing local information.

Some ZIP Codes may serve more than one nearby city or community. The table focuses on the primary city association for each ZIP Code while maintaining an easy-to-read format for quick reference.

King County ZIP Code List