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Area Code Overview
Area code 564 is a geographic telephone area code in Washington that went into service on August 28, 2017. The geographic regions covered by this area code overlay has a population of approximately 1,735,923.
Overlay and Dialing Rules
- Area Code: 564
- State: Washington
- Type: General Purpose Code
- In Service Date: August 28, 2017
- Overlay Complex: 206/360/564
- Local Dialing Plan: This area does require you to dial the area code when calling locally.
Estimated Number of Assigned Phone Numbers in Area Code 564
This area code is ranked 333rd out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 6th out of 6.
755,000
Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 564
Wireline and VoIP
316,000 assigned
41.85%
Other / Unclassified
97,000 assigned
12.85%
Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 564
Estimated assigned wireless phone numbers: 342,000
Numbers may later be ported to another carrier, but this chart reflects original number assignment, not current subscriber share.
T-Mobile 150,000 (43.86%)
Verizon Wireless 141,000 (41.23%)
AT&T Wireless 51,000 (14.91%)
Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 564
Estimated assigned wireline and VoIP phone numbers: 316,000
MCIMETRO ACCESS TRANSMISSION SERVICES LLC 25,000 (7.91%)
Peerless Network 25,000 (7.91%)
Comcast Business 10,000 (3.16%)
ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 8,000 (2.53%)
TERRA NOVA TELECOM INC. 6,000 (1.90%)
Other / Unclassified Assigned Numbering in Area Code 564
Estimated assigned other or unclassified phone numbers: 97,000
TELEPORT COMMUNICATIONS AMERICA, LLC - WA 76,000 (78.35%)
TON80 COMMUNICATIONS, LLC 10,000 (10.31%)
FRACTEL, LLC 8,000 (8.25%)
IP HORIZON LLC 2,000 (2.06%)
SALISH NETWORKS, INC. - WA 1,000 (1.03%)
Cities and Towns in Area Code 564
Aberdeen, Washington Amboy, Washington Ashford, Washington Bainbridge Island, Washington Battle Ground, Washington Belfair, Washington Black Diamond, Washington Bremerton, Washington Buckley, Washington Bucoda, Washington Camas, Washington Caples, Washington Castle Rock, Washington Cathlamet, Washington Centralia, Washington Chehalis, Washington Cougar, Washington Curtis, Washington Des Moines, Washington Dewatto, Washington Eatonville, Washington Elma, Washington Enumclaw, Washington Forks, Washington Grays River, Washington Hat Island, Washington Hood, Washington Hoodsport, Washington Kalama, Washington Kingston, Washington La Center, Washington Long Beach, Washington Longview, Washington Marysville, Washington Montesano, Washington Morton, Washington Mossyrock, Washington Mount Vernon, Washington Naselle, Washington Oak Harbor, Washington Ocosta, Washington Olympia, Washington Orting, Washington Pacific Beach, Washington Point Roberts, Washington Port Angeles, Washington Port Ludlow, Washington Port Orchard, Washington Port Townsend, Washington Poulsbo, Washington Richmond Beach, Washington Ridgefield, Washington Rochester, Washington Salkum, Washington San Juan County, Washington Seattle, Washington Shelton, Washington Silverdale, Washington Skykomish, Washington Snohomish, Washington South Bend, Washington South Prairie, Washington Tenino, Washington Toledo, Washington Union, Washington Vader, Washington Vancouver, Washington Vashon, Washington Whatcom County, Washington Winlock, Washington Woodland, Washington Yacolt, Washington Yale, Washington Yelm, Washington These geographic regions are also served by area codes 206 and 360.
How These Figures Were Built
These figures are estimates based on public phone-number assignment records. They are meant to show the likely mix of assigned phone numbers associated with area code 564, not live customer counts.
Some providers may have assigned phone numbers tied to this area code even if they do not actively market or sell service locally. These figures reflect public number-assignment records, not confirmed local service availability.
They also do not reflect number portability at the individual phone-number level, so some numbers may now be used on a different network or by a different provider than the original assignment records suggest.
Population data and locality matching provided by GeoNames.
Last refreshed: April 15, 2026 6:22 pm