This category contains a complete list of all counties in Washington State. Each county page provides an overview of location, boundaries, cities and towns, major roads, natural features, and regional context. Counties are an important level of organization for understanding local government, public services, and geographic structure across the state.
Using the interactive county maps, users can explore county borders, neighboring counties, key communities, transportation routes, and notable landmarks. This category is useful for residents, visitors, researchers, and anyone looking to better understand how Washington State is divided and how its regions connect.
Location and Regional Context Mason County is located in western Washington at the southern end of Puget Sound. It features a mix of inland forests, shoreline areas, and river systems. The county borders Thurston County to the south and Jefferson County to the north. Population and Settlement Patterns Shelton is …
Location and Regional Context Franklin County is located in southeastern Washington and borders the Columbia River. It forms part of the Tri-Cities region alongside Benton County. The county’s flat terrain and river access shape its settlement and economic patterns. Population and Communities Pasco is the county seat and largest city, …
Location and Regional Context Spokane County is located in eastern Washington and serves as the main urban center for the Inland Northwest. It borders Idaho to the east and extends west into agricultural and forested areas. The Spokane River plays a central role in the county’s geography. Population and Development …
Location and Regional Context Yakima County is located in south-central Washington on the eastern side of the Cascade Mountains. It spans a large area of valleys, foothills, and agricultural plains. The county is bordered by Kittitas County to the north and Klickitat County to the south. Population and Urban Centers …
Location and Regional Context Skamania County is located in southwestern Washington along the Columbia River Gorge. It borders Oregon to the south and stretches north into forested mountain terrain. The county is one of the least densely populated in the state but covers a large geographic area. Population and Community …
Location and Regional Context Grant County is located in central Washington and covers a large portion of the Columbia Basin. It borders multiple counties and is defined by open plains, irrigation systems, and large bodies of water such as Moses Lake. The county’s central position makes it an important link …
Location and Regional Context Whitman County is located in southeastern Washington along the Idaho border. It is part of the Palouse region, known for its rolling hills and fertile farmland. The county borders Spokane County to the north, Asotin County to the south, and Idaho to the east. Its rural …
Location and Regional Context Benton County is located in southeastern Washington within the Columbia Basin region. It lies along the Columbia River and forms part of the Tri-Cities area, along with neighboring Franklin County. The county is characterized by wide-open landscapes, rolling hills, and riverfront corridors that shape settlement and …
Location and Regional Context King County is located in western Washington and forms the geographic, economic, and population core of the state. It stretches from the shores of Puget Sound in the west to the Cascade Mountains in the east, creating one of the most diverse county landscapes in the …
Location Wahkiakum County is located in southwestern Washington along the Columbia River, directly north of Oregon. It is bordered by Pacific County to the north and Cowlitz County to the east. Geography The county features riverfront landscapes, forested hills, and tidal wetlands. The Columbia River strongly influences transportation, ecology, and …
