Quick answer: The 564 area code covers western Washington — including Olympia, Vancouver, and Bellingham — as an overlay alongside the established 360 code. Both codes share the same geographic footprint across western Washington outside the Seattle metro, ten-digit dialing is mandatory throughout the region, and you can get a local 564 number through a virtual provider without relocating to Washington.
Introduction
Western Washington is one of the most geographically varied regions in North America. Its southern end anchors on Olympia — the state capital, set at the southern tip of Puget Sound — and extends to Vancouver on the Columbia River, sitting directly across the water from Portland, Oregon. In the north, Bellingham looks out over Bellingham Bay toward the San Juan Islands and the Canadian border, with Mount Baker towering over the city's eastern skyline.
These three cities share the 564 area code alongside dozens of other western Washington communities, all under the overlay system that 564 and its partner code 360 have operated since 2017. Together they represent the full range of what makes western Washington distinctive: state government and public institutions in Olympia, a major cross-border metro economy in Vancouver, and a university and maritime city in Bellingham that serves as the gateway to the North Cascades and the islands.
This guide explains where 564 reaches, the communities it serves, how the overlay history unfolded, how to dial correctly, and how to protect yourself from scams that spoof Pacific Northwest numbers.
Where the 564 area code reaches
The 564 area code covers western Washington outside the Seattle metropolitan area — the same footprint as the 360 area code it overlays. The region stretches from the Columbia River at the Oregon border in the south, north through the Puget Sound lowlands, the Olympic Peninsula, and the Cascades foothills all the way to the Canadian border at Blaine.
Major counties in the 564 footprint include Thurston County (Olympia), Clark County (Vancouver), Whatcom County (Bellingham), Skagit County (Mount Vernon, Anacortes), Cowlitz County (Longview, Kelso), Clallam County (Port Angeles, Sequim), Lewis County (Centralia, Chehalis), and Grays Harbor County (Aberdeen, Hoquiam). The eastern boundary of the 564 / 360 region separates it from the 509 area code serving eastern Washington, while the Seattle metro counties sit within the 206, 253, and 425 footprints.
Because 564 and 360 share the same geography as a true overlay, every address in the region can be reached on either code. For a look at how a single non-overlaid code serves an entire state, the 207 area covers all of Maine under one prefix without any parallel overlay — a notable contrast to the busy western Washington market.
A short history of Washington's 564 code
Washington entered the North American Numbering Plan in 1947 under a single statewide code: 206. For nearly five decades that one prefix handled every call in Washington — from Seattle's waterfront to the wheat country of the Palouse, from Olympia's Capitol dome to the Canadian border crossing at Blaine.
By the early 1990s, Washington's population and telecommunications demand had outgrown a single code. Regulators restructured the state's numbering in 1995 with four new codes at once: 509 for eastern Washington, 253 for Tacoma and Pierce County, 425 for the Seattle Eastside suburbs and Snohomish County, and 360 for the large swath of western Washington outside the Seattle metro — the cities and communities that would eventually anchor the 564 footprint.
The 360 pool served western Washington for more than two decades, but steady population growth in the Vancouver and Bellingham metros, the expansion of mobile and VoIP services, and the rise of broadband internet connections collectively drew down the available number supply. In 2017 regulators introduced 564 as a pure overlay for 360, assigning it to the same western Washington territory and making ten-digit dialing mandatory throughout the region. Today both 564 and 360 serve every community from the Columbia River to the Canadian border side by side.
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Major cities in the 564 area code
Western Washington outside the Seattle metro contains a wide variety of communities — the state capital, a major cross-border metro, a university and maritime city, and dozens of smaller agricultural, coastal, and mountain-gateway towns:
| City | County | Known for |
|---|---|---|
| Olympia | Thurston | Washington state capital, South Puget Sound |
| Vancouver | Clark | Columbia River, Portland cross-border metro |
| Bellingham | Whatcom | Western Washington University, Mount Baker gateway |
| Mount Vernon | Skagit | Skagit Valley tulip fields, agricultural hub |
| Longview | Cowlitz | Paper and aluminium industry, Columbia River port |
| Port Angeles | Clallam | Olympic National Park gateway, Victoria ferry |
| Centralia | Lewis | Historic downtown, regional commerce |
| Aberdeen | Grays Harbor | Timber heritage, Grays Harbor coastal access |
Olympia, Vancouver, and Bellingham form the three population anchors of the 564 region. Vancouver is part of the Portland–Vancouver metro, one of the fastest-growing urban areas in the Pacific Northwest. Bellingham has emerged as a destination city for remote workers and outdoor enthusiasts, while Olympia's government-driven economy gives the southern end of the 564 footprint a stable institutional base.
How to dial a 564 number
Because 564 overlays 360 and both codes serve the same territory, ten-digit dialing has been mandatory throughout western Washington since 2017. Always include the full area code — even when calling someone in the same city:
| Calling from | Format |
|---|---|
| Within the 564 / 360 area | 564-XXX-XXXX |
| Other US states | 1-564-XXX-XXXX |
| International | +1 564 XXX XXXX |
Seven-digit local dialing is not permitted anywhere in the overlay zone. Without the area code the network cannot determine whether the called number belongs to a 564 or a 360 subscriber.
The 564 area code sits in Pacific Time — Pacific Standard Time (UTC−8) in winter and Pacific Daylight Time (UTC−7) in summer. At noon in Olympia or Bellingham it is 3 PM in New York, 2 PM in Chicago, and 1 PM in Denver. Western Washington operates on the same clock as Los Angeles and Seattle, three hours behind the East Coast — a factor worth planning around for businesses coordinating with the rest of the country.
Why choose a 564 number
A 564 number tells western Washington callers you belong to their region before the conversation begins. Whether you are reaching out to a state agency in Olympia, a cross-border business in Vancouver, or a tourism operator in Bellingham, a familiar Pacific Northwest prefix lifts answer rates and establishes local trust in a way that toll-free or out-of-state numbers cannot.
The 564 code, as the overlay introduced in 2017, also carries the natural association with modern cloud telephony — making it feel current and professional in a market where remote work, tech adoption, and mobile-first communication are the norm. Holding a 564 line requires no Washington address.
Virtual providers issue the number and forward calls to any device you choose. My Country can provision a 564 number the same day and route it through your existing phone setup, letting your team project a genuine western Washington presence from anywhere in the world.
Staying safe from 564 scam calls
A 564 number on your caller ID does not confirm the call is coming from western Washington. Caller-ID spoofing allows bad actors to display any local-looking prefix from anywhere in the world. Scams common to the 564 / 360 region include fake utility disconnection threats impersonating local power cooperatives, IRS and Social Security fraud, Medicare scams targeting older residents in smaller coastal and rural communities, and neighbour-spoofing robocalls that cycle through number sequences close to well-known local numbers.
The FCC's STIR/SHAKEN requires carriers to verify call origin and label suspicious calls as "Spam Risk" or "Scam Likely" on compatible devices. The most reliable protection is behavioural: if an unexpected 564 caller demands immediate payment, requests personal details under pressure, or refuses to provide a verifiable callback number, hang up and contact the organisation directly through a number from its official website.
Conclusion
The 564 area code is western Washington's modern telecommunications layer — introduced in 2017 to give a region stretching from the Columbia River to the Canadian border the numbering capacity its growing economy demands. From Olympia's government campuses and Bellingham's university and maritime industries to Vancouver's fast-expanding cross-border metro, 564 reaches every community in one of the Pacific Northwest's most diverse and dynamic regions.
For businesses targeting the western Washington market, a 564 number delivers immediate local credibility with the communities of Olympia, Vancouver, Bellingham, and dozens of cities and towns in between. My Country Mobile can activate a 564 line the same day, with no hardware and no Washington address required, letting your team connect with the Pacific Northwest from wherever you operate.
Key takeaways
- The 564 area code covers Olympia, Vancouver, Bellingham, and western Washington outside the Seattle metro as an overlay alongside 360.
- It was introduced in 2017 when the 360 number pool could no longer keep pace with demand across the western Washington region.
- Ten-digit dialing is mandatory — always include 564 or 360 before the seven-digit number throughout the overlay zone.
- 564 operates on Pacific Time (UTC−8 winter / UTC−7 summer).
- A virtual 564 number delivers full local credibility across western Washington with no physical office required.
- Scammers spoof 564 numbers — verify unexpected callers before sharing money or personal information.
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Frequently asked questions
Where is the 564 area code located?
The 564 area code covers western Washington outside the Seattle metro, including Olympia, Vancouver, Bellingham, Mount Vernon, Longview, Port Angeles, Centralia, and Aberdeen. It overlays the 360 area code across the same footprint.
What is the difference between 564 and 360?
Both 564 and 360 cover the same western Washington territory. The 564 code was introduced in 2017 as an overlay when new 360 numbers became scarce. There is no geographic distinction — either code can reach any address in the region.
What time zone is the 564 area code in?
Pacific Time. Western Washington observes PST (UTC−8) in winter and PDT (UTC−7) in summer.
What are the largest cities in the 564 area code?
Vancouver, Olympia, and Bellingham are the three largest cities. Vancouver is part of the greater Portland–Vancouver metro. Olympia is the Washington state capital, and Bellingham serves as the northern anchor of the region near the Canadian border.
Is ten-digit dialing required in the 564 area?
Yes, and it has been mandatory since 2017 when the 564 overlay was introduced. Always dial the full area code plus the seven-digit number, even within the same city.
Can I get a 564 number without living in Washington?
Yes. Virtual phone providers let you obtain a 564 number and forward calls to any device, anywhere, with no Washington address required.
Are calls to 564 numbers long distance?
Calls within the western Washington region served by 564 are treated as local. Calls from other states to a 564 number follow standard long-distance or calling-plan rates.
