The 564 area code is located in the state of Washington, and according to Intelius data, covers roughly 796 phone numbers and 811 listings across 90 prefixes.
This is a General Purpose Code, in service since August 28, 2017.
Area code 564 is part of an overlay complex shared with:
Area code 564 was split from area code 360.
Local calls within area code 564 require 10 digits dialing, while long-distance calls require 1 plus 10 digits dialing.
Have you received a call from a number with a 564 area code? Figure out who is calling you by performing a reverse phone lookup search. Intelius can provide you with a phone report that includes (when available) original line type and carrier, the number owner’s name, last known address and past addresses, age, possible relatives, and more.
| County Population (2025) | 946,288 |
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| County Population (2025) | 304,261 |
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