509 area code is being used for dialing/telecommunication purposes in Washington, covering 10 major cities and 8 counties, according to (NANP) North American Numbering Plan for 3-digit Numbering Plan Area (NPA) code. All the areas using NPA code 509 is part of PST (Pacific Standard Time) timezone.
509 Area Code Covers 10 Cities
Check this below table to know 10 major cities (having more than 20,000 population) in Washington using numbering plan area code 509 for dialing/telecommunication purposes.
| City | ZIP Codes | Population |
|---|
| Moses Lake, WA | 1 | 25,155 |
| Pasco, WA | 6 | 77,274 |
| Pullman, WA | 2 | 31,972 |
| Richland, WA | 1 | 60,867 |
| Spokane, WA | 17 | 227,922 |
| Spokane Valley, WA | 13 | 103,761 |
| Walla Walla, WA | 2 | 33,842 |
| Wenatchee, WA | 3 | 35,365 |
| Yakima, WA | 6 | 96,764 |
8 Counties Using 509 as Area Code
509 area code is being used in 8 counties of Washington for dialing/telecommunication purposes.
12 More NPA Codes Related to Area Code 509
1 or more of these 12 NPA codes are being used in the same or adjacent states of Washington in the United States.
Only One State Uses Area Code 509
