Area code 564
Telephone area code for western Washington, United States
Summary
Area code 564 is a telephone overlay area code in the North American Numbering Plan (NANP) for Western Washington state, including metropolitan Seattle. It overlays the combined numbering plan areas of area codes 206 and 360.
Originally created by KeithTyler
3/18/2005, 8:59:29 PM
Modified
2/27/2026, 6:44:48 AM
Contributors
Source: WikipediaView full article↗
