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Where Is 564 Area Code?

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Database Updated: August 14, 2025
Washington Phone Number Lookups
Where Is 564 Area Code?

Where is Area Code 564?

Area code 564 is located in the state of Washington. It serves a variety of regions, counties, and major cities, providing essential telecommunication services to residents and businesses. The area code 564 is an overlay, meaning it was introduced to cover the same geographic area as existing area codes without requiring customers to change their current numbers. Here are the key areas covered by area code 564:

  • Major Cities:
  • Seattle
  • Olympia
  • Bellingham
  • Bremerton
  • Counties:
  • King County
  • Pierce County
  • Thurston County
  • Whatcom County
  • Kitsap County
  • Regions:
  • Puget Sound region
  • Olympic Peninsula

For more information about the regions covered by area code 564, visit the Washington Utilities and Transportation Commission (UTC).

Washington Utilities and Transportation Commission (UTC)
621 Woodland Square Loop SE, Lacey, WA 98503
Phone: 360-664-1160
TTY: 1-800-833-6384 or 711

What time zone is 564 area code in the USA?

The 564 area code is situated in the Pacific Time Zone (PT), which is 8 hours behind Coordinated Universal Time (UTC-8). This time zone observes daylight saving time, shifting to Pacific Daylight Time (PDT), which is UTC-7, during the warmer months. For accurate timekeeping and more details about time zones, refer to the National Institute of Standards and Technology.

History of the 564 Area Code

The 564 area code was introduced to address the growing demand for telephone numbers in the state of Washington. It was officially implemented in 2017 as an overlay to the existing 360 area code in the region. The introduction of 564 was necessary due to the rapid population growth and the proliferation of mobile devices, which significantly increased the need for new phone numbers. For more historical details and information about area code changes, visit the North American Numbering Plan Administrator (NANPA).

NANPA Mailing Address
One Tower Center Boulevard
Suite 800
East Brunswick, NJ 08816

NANPA Customer Support
Tel: 1-866-623-2282
Email: support@nanpa.com
Fax: 571-363-3838

How Many People Use the 564 Area Code?

The 564 area code serves a significant portion of Washington's population, covering densely populated urban areas as well as suburban and rural regions. The population within the area code's coverage is diverse, with a mix of residential, commercial, and industrial zones. For detailed demographic information and population statistics, refer to the U.S. Census Bureau.

U.S. Census Bureau
4600 Silver Hill Road, Washington, DC 20233
Tel: 301-763-INFO (4636) or 800-923-8282

Is the 564 Area Code Toll-Free?

The 564 area code is a geographic area code, not a toll-free number. It is used for standard telecommunication services within its designated regions in Washington. Toll-free numbers in the United States typically begin with the prefixes 800, 888, 877, 866, 855, 844, and 833. These numbers allow callers to reach businesses and individuals without incurring charges for the call. For more information on toll-free numbers and their operation, visit the Federal Communications Commission.

Federal Communications Commission
45 L Street NE, Washington, DC 20554
Tel: 1-888-CALL FCC (225-5322)
https://www.fcc.gov/

Washington Phone Numbers
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