564 Area Code
The 564 area code serves Western Washington state, including metropolitan Seattle.
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The 564 area code serves Western Washington state, including metropolitan Seattle.
Federal Data
State Data
County Data
City Data
Area code 564 covers Western Washington.
Area code 564 is an overlay to area codes 206 and 360. Area code 564 was first proposed in 1999, but implementation was delayed until 2017 when it was installed as an overlay to numbering plan area (NPA) 360. In 2023, area code 206 was approved for expansion with area code 564. Ten-digit dialing has been mandatory in all of western Washington since July 29, 2017.
Area code 564 is a general purpose code which was placed in service on August 28, 2017.
Our Washington phone number lookup service will analyze the three-digit prefix of any 564 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, Washington geographic region, and local calling area associated with the phone number.
Phone numbers follow the following structure under the North American Numbering Plan:
Understanding the area code can help you determine if a call is local to your area. However, keep in mind that due to mobile number portability and VoIP services, the caller may be anywhere in the United States, so it’s best to search for the most recent phone number details.
| Company | Number of Prefixes |
|---|---|
| ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM | 1 |
Carrier names have been updated from their original FCC assignments to reflect current companies following mergers, acquisitions, and rebranding. Updates were determined using AI-assisted research and may not be accurate or reflect up to date changes. This data is provided without warranties of accuracy or completeness.
| Rate Center | Number of Prefixes |
|---|---|
| VANCOUVER | 1 |
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