509 Area Code — Washington
509 is a North American Numbering Plan area code for Washington, the United States. It covers about 1,692,457 people in 218 towns and 257 ZIP codes, including Spokane, Yakima and Kennewick.
| Field | Value |
|---|---|
| Area code | 509 |
| Country | United States (+1) |
| State / province | Washington |
| Type | Standalone (no other NANP code covers the same towns) |
| Time zone | Pacific |
| Population covered | 1,692,457 |
| Towns covered | 218 |
| ZIP codes | 257 |
| Approx. centre | 47.277, -118.839 |
Where area code 509 is used
Area code 509 is assigned to Washington, the United States, inside the North American Numbering Plan. Numbers in the code are written (509) NXX-XXXX at home and +1 509 NXX-XXXX when dialled from outside Canada and the United States. Since the NANP moved to 10-digit dialling you must always include the area code, even for a local call.
Towns and cities in area code 509
The 218 towns below are the largest in the 509 footprint, ranked by population. Every one of them links to its own page with the full list of area codes and ZIP codes for that town.
| Town | County | Population | ZIP codes |
|---|---|---|---|
| Spokane | Spokane County | 391,629 | 28 |
| Yakima | Yakima County | 135,363 | 7 |
| Kennewick | Benton County | 104,655 | 3 |
| Pasco | Franklin County | 87,044 | 2 |
| Richland | Benton County | 62,989 | 2 |
| Moses Lake | Grant County | 49,455 | 1 |
| Wenatchee | Chelan County | 45,426 | 2 |
| Walla Walla | Walla Walla County | 42,853 | 1 |
| Ellensburg | Kittitas County | 34,353 | 1 |
| Pullman | Whitman County | 34,022 | 2 |
| East Wenatchee | Douglas County | 33,539 | 1 |
| Cheney | Spokane County | 22,871 | 1 |
Counties covered
| County | ZIP codes |
|---|---|
| Spokane County | 52 |
| Yakima County | 24 |
| Whitman County | 22 |
| Okanogan County | 18 |
| Stevens County | 17 |
| Klickitat County | 14 |
| Grant County | 14 |
| Chelan County | 12 |
| Lincoln County | 12 |
| Benton County | 11 |
| Ferry County | 9 |
| Douglas County | 8 |
Nearby area codes
How to dial area code 509
- Within North America: 509 + 7-digit number (509-NXX-XXXX). The leading 1 is optional on a mobile phone and required on most landlines for long-distance.
- From abroad: your country's international prefix, then 1, then 509, then the 7-digit number — for example 00 1 509 NXX-XXXX from most of Europe.
Frequently asked questions
What area code is 509?
509 is a North American Numbering Plan area code assigned to Washington, the United States. It covers about 1,692,457 people in 218 towns.
Is 509 a US or Canadian area code?
509 is a United States area code. Canada and the United States share the +1 country code, so both are part of the same numbering plan.
What time zone is area code 509 in?
Area code 509 is in the Pacific time zone.
Do I have to dial 10 digits?
Yes. Every NANP call now requires the area code plus the seven-digit number, even for a local call.