564 area code is being used for dialing/telecommunication purposes in Washington, covering 11 major cities and 7 counties, according to (NANP) North American Numbering Plan for 3-digit Numbering Plan Area (NPA) code. All the areas using NPA code 564 is part of PST (Pacific Standard Time) timezone.
564 Area Code Covers 11 Cities
Check this below table to know 11 major cities (having more than 20,000 population) in Washington using numbering plan area code 564 for dialing/telecommunication purposes.
| City | ZIP Codes | Population |
|---|
| Battle Ground, WA | 2 | 20,888 |
| Bellingham, WA | 5 | 91,353 |
| Bremerton, WA | 5 | 43,983 |
| Camas, WA | 1 | 26,387 |
| Lacey, WA | 3 | 56,263 |
| Longview, WA | 1 | 37,722 |
| Marysville, WA | 2 | 70,847 |
| Mount Vernon, WA | 2 | 35,120 |
| Olympia, WA | 5 | 55,151 |
| Vancouver, WA | 14 | 190,700 |
7 Counties Using 564 as Area Code
564 area code is being used in 7 counties of Washington for dialing/telecommunication purposes.
12 More NPA Codes Related to Area Code 564
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 564
