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509
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Economic Overview
The 509 area code region features a diverse economy, with major industries including agriculture (especially wheat, apples, and wine grapes), healthcare, manufacturing, and education. Major employers include Washington State University in Pullman, health systems like Providence Sacred Heart Medical Center in Spokane, and large agricultural operations. The area is also known for its growing tech sector and renewable energy development.
Geographical Overview
Area code 509 covers the majority of eastern Washington, including cities such as Spokane, Yakima, Walla Walla, Kennewick, Pasco, Richland, Pullman, and Wenatchee. It spans a wide range of terrain from the Columbia Basin and Palouse hills to the eastern slopes of the Cascade Mountains. Counties served include Spokane, Yakima, Benton, Franklin, Walla Walla, Chelan, Douglas, Whitman, and several others.
Location Info
Area code 509 covers the eastern two-thirds of Washington state, generally east of the Cascade Mountains, except for a small portion in the south-central region. Its western boundary follows the crest of the Cascades and extends eastward to the Idaho border, encompassing key population centers like Spokane and the Tri-Cities (Kennewick, Pasco, Richland). The area code does not include Seattle, Tacoma, or other western Washington cities.
Population Demographics
The 509 area code region is home to a mix of urban and rural populations, with Spokane being the largest city. The area has a predominantly White population, with growing Hispanic/Latino communities, particularly in agricultural areas. The region is characterized by a blend of college students, young professionals, and long-established agricultural families.
Time Zone Info
Area code 509 is entirely within the Pacific Time Zone (PT).
Other Area Code Details
The 509 area code was created in 1957 when it split from area code 206, and it is one of only two original area codes in Washington state. The region includes nationally recognized wine-producing areas like Walla Walla and Yakima Valleys, and hosts the annual Washington State University Cougar football games in Pullman. Spokane is the largest city within the 509 area code and serves as the economic and cultural hub of the Inland Northwest.
