Kennewick, Washington

Where Is Area Code 509?

Area code 509 is in eastern Washington. It covers the part of the state east of the Cascade Range, including Kennewick and much of the Inland Northwest. This area code serves a large region rather than one single city.

Major cities in area code 509 include Spokane, Yakima, Kennewick, Pasco, Richland, Walla Walla, Wenatchee, Moses Lake, Pullman, and Ellensburg. The code covers all or part of many counties in eastern Washington, including Benton County, Franklin County, Spokane County, Yakima County, Walla Walla County, Chelan County, Grant County, and Whitman County.

Area code 509 includes several well-known geographic features and landmarks. These include the Columbia River, the Yakima River, the Tri-Cities region, Lake Chelan, and parts of the Columbia Basin. It also includes Washington State University in Pullman and the Hanford Site near Richland.

History of Area Code 509

Area code 509 was created in 1957 when Washington's original area code, 206, was split. The split gave western Washington the 206 area code and assigned 509 to eastern Washington. This change reflected the need for more telephone numbers as service expanded across the state.

Area code 509 has not been overlaid by another area code. It has remained the main area code for eastern Washington since 1957. The region's growth in cities such as Spokane, Yakima, and the Tri-Cities increased demand for telephone service over time.

Key Facts About Area Code 509

• Area code 509 is in the state of Washington, and Kennewick is one of the cities that uses it.
• Area code 509 serves eastern Washington, including Spokane, Yakima, Kennewick, Pasco, Richland, Walla Walla, Pullman, and Wenatchee.
• Area code 509 was established in 1957 after a split from Washington's original 206 area code.
• Area code 509 is a geographic area code, not a toll-free area code.
• Area code 509 is in the Pacific Time Zone, including Pacific Standard Time and Pacific Daylight Time.
• Area code 509 covers the Tri-Cities, which are Kennewick, Pasco, and Richland.
• Area code 509 includes Washington State University in Pullman and Gonzaga University in Spokane.
• Area code 509 has no overlay area code and remains a single-area-code region.

Frequently Asked Questions

What state is area code 509 in?

Area code 509 is in Washington.

What major cities use area code 509?

Major cities in area code 509 include Spokane, Yakima, Kennewick, Pasco, Richland, Walla Walla, Pullman, Wenatchee, Moses Lake, and Ellensburg.

Is area code 509 a toll-free number?

No, area code 509 is a geographic area code for eastern Washington.