The 509 area code serves eastern Washington, covering Spokane, Yakima, the Tri-Cities, and the Palouse. In service since 1957, it is a geographic area code for the drier, agricultural, and mountainous eastern half of the state. If a 509 number has appeared on your caller ID, this guide explains where it comes from, how to dial it, and how to stay safe from spoofed calls.
Quick Summary: Area Code 509 at a Glance
| Detail | Information |
|---|---|
| Area Code | 509 |
| State | Washington (WA) |
| Major Cities | Spokane, Yakima, Kennewick, Wenatchee |
| Time Zone | Pacific Time (PT) |
| Country Code | +1 (USA) |
| Overlay Codes | None (standalone) |
Geographic Coverage & Major Cities
Area code 509 covers all of eastern Washington, from the Canadian border to Oregon, including the Spokane, Yakima, Tri-Cities, and Wenatchee regions.
- Spokane – the largest city in eastern Washington and the second-largest in the state
- Yakima – a Central Washington agricultural hub in wine and fruit country
- Kennewick, Richland & Pasco – the Tri-Cities on the Columbia River
- Wenatchee, Walla Walla & Pullman – established eastern Washington communities; Pullman is home to Washington State University
From Spokane’s downtown to Columbia Basin farms and Palouse wheat fields, a 509 number is closely tied to the identity of eastern Washington.
A Brief History of Area Code 509
Area code 509 was created in 1957 in a split from the original 206 code, taking the eastern half of Washington. Because it serves a large but less densely populated region, 509 has never required an overlay and still covers all of eastern Washington on a single area code.
Time Zone & Best Time to Call
Numbers in the 509 area code use Pacific Time (PT). The region observes Daylight Saving Time, shifting from PST (UTC-8) to PDT (UTC-7) between March and November each year.
How to Dial Phone Numbers in Area Code 509
Because 509 has no overlay, both 7-digit and 10-digit local dialing have historically worked, but 10-digit dialing is now the recommended standard across the United States.
Calling within the United States or Canada
- 10-digit dialing: Include the area code – 509-XXX-XXXX.
- 11-digit dialing: You can also dial 1-509-XXX-XXXX; the leading 1 is the NANP country code.
Calling from outside the United States
- Format: [exit code] + 1 + 509 + XXX + XXXX
- From the UK, Europe, or most of Asia/Africa: 00 1 509 XXX XXXX
- From any mobile phone worldwide: +1 509 XXX XXXX
Is Area Code 509 a Scam? Safety & Protection Tips
Area code 509 is a legitimate Washington area code – a call from it is not fraudulent by default. However, scammers frequently spoof local codes like 509, faking the caller ID so their number appears to come from a trusted local line. Neighbor spoofing, which mimics the first six digits of your own number, is especially common.
Common scam tactics linked to this region
| Scam type | What to watch for |
|---|---|
| Government impersonation | Callers posing as the IRS or SSA threatening arrest or fines |
| Bank & card fraud alerts | Claims of suspicious activity seeking your account details |
| Student & scholarship scams | Fake tuition or financial-aid calls targeting Washington State University students |
| Utility shut-off threats | Fake Avista or Pacific Power disconnection demands |
How to report, block, and look up 509 callers
- Never share personal or financial details with an unexpected caller, however urgent they sound.
- Block the number using your phone’s built-in call-blocking feature or a reputable call-screening app.
- Look up the number with a trusted reverse phone lookup before returning any call.
- Report it to the FTC at reportfraud.ftc.gov and register at DoNotCall.gov.
Nearby & Related Area Codes in Washington
Area code 509 shares and borders several other codes:
- 206, 253, 425 & 564 – the Seattle-Tacoma metro and western Washington to the west (see our 206 area code guide)
- 360 – outer western Washington, including the coast and the capital (see our 360 area code guide)
- 208 & 986 – neighboring Idaho to the east
- 541 & 458 – neighboring eastern Oregon to the south
Explore more codes across the state on our Washington area codes hub, or browse every prefix in our US area codes directory.
↑ See the complete list of All US Area Codes by State – every area code across all 50 states in one directory.
Explore Neighboring States
Researching area codes just across the state line? Start with these codes in the states that border Washington:
Frequently Asked Questions About Area Code 509
Where is the 509 area code located?
Area code 509 covers eastern Washington, including Spokane, Yakima, the Tri-Cities, and Wenatchee. It operates on Pacific Time.
Does the 509 area code have an overlay?
No. Because it serves a large but less densely populated region, 509 has never needed an overlay and still covers all of eastern Washington on a single area code.
Is 509 a landline or cell phone area code?
Both. Area code 509 serves landlines, mobile phones, and VoIP numbers throughout eastern Washington.
Should I answer a call from an unknown 509 number?
If you are not expecting the call, let it go to voicemail. Legitimate callers leave a message, while spoofed or robocall numbers usually will not. Verify any unfamiliar number with a reverse lookup before calling back.
Related 509 Guides
- Is a 509 call safe? Read Is area code 509 a scam? Spam & safety guide.
- Local coverage: see the Spokane area code guide.
- Worried about spam or robocalls? Browse our Scam Alerts directory.