What is 509 Area Code?

The 509 area code is a telephone area code in the North American Numbering Plan covering eastern Washington. It was created in 1957 when the original 206 area code was split. This area code includes both urban and rural regions, making it essential for businesses that want a local presence in these communities.

  • State: Washington
  • Major Cities: Spokane, Yakima, Kennewick, Richland, Pasco
  • Time Zone: Pacific Standard Time (PST) / Pacific Daylight Time (PDT)
  • Established: 1957 (split from area code 206)
  • Overlay Area Code: None
  • Region Population: Approx. 1.6 million
  • Primary Uses: Business phone numbers, residential lines, mobile services, VoIP

Regions Covered by 509 Area Code

Here’s a table of major regions using the 509 area code:

Spokane County

  • Spokane
  • Cheney
  • Mead
  • Country Homes
  • Deer Park
  • Fairfield
  • Rockford
  • Spangle
  • Latah

Yakima County

  • Yakima
  • Sunnyside
  • Grandview
  • Toppenish
  • Selah
  • Union Gap
  • Wapato
  • Granger
  • Ahtanum
  • Mabton
  • Tieton
  • Naches
  • White Swan
  • Harrah

Benton County

  • Kennewick
  • Richland
  • West Richland
  • Finley
  • Prosser
  • Benton City
  • Paterson

Walla Walla County

  • Walla Walla
  • College Place
  • Burbank
  • Eureka
  • Waitsburg
  • Touchet
  • Prescott

Okanogan County

  • Omak
  • Brewster
  • Oroville
  • Coulee Dam
  • Tonasket
  • Pateros
  • Nespelem
  • Loomis
  • Molson

Whitman County

  • Colfax
  • Palouse
  • Tekoa
  • Garfield
  • Farmington
  • Rosalia
  • Oakesdale
  • Uniontown
  • Endicott

Grant County

  • Moses Lake
  • Ephrata
  • Warden
  • George
  • Wilson Creek
  • Coulee City

Stevens County

  • Colville
  • Chewelah
  • Kettle Falls
  • Northport
  • Springdale

Klickitat County

  • Goldendale
  • White Salmon
  • Dallesport
  • Lyle
  • Klickitat
  • Glenwood

Adams County

  • Othello
  • Ritzville
  • Lind
  • Washtucna

Asotin County

  • Clarkston
  • Asotin
  • Anatone

Kittitas County

  • Ellensburg
  • Cle Elum
  • Roslyn

Chelan County

  • Wenatchee
  • Chelan

Franklin County

  • Pasco
  • Connell

Douglas County

  • East Wenatchee
  • Bridgeport

Columbia County

  • Dayton
  • Starbuck

Population & Demographics of 509 Area Code

The 509 area code region has a diverse population of over 1.6 million people. Spokane, the largest city in this area, has a population of approximately 230,000. Other cities like Yakima and Kennewick contribute significantly to the region’s economy.

The demographic spread includes a mix of urban and rural residents, professionals, students, and agricultural communities. Understanding this population is essential for businesses, as it informs how to target local customers effectively.

509 Area Code Time Zone

The 509 area code falls entirely within the Pacific Time Zone (PT). This means it observes Pacific Standard Time (PST) in the winter and Pacific Daylight Time (PDT) during daylight saving months.