All Washington Counties

Southwest Washington

Cowlitz County, Washington

County seat: Kelso

Cowlitz County sits where the Cowlitz River meets the Columbia, midway between Portland and Mount St. Helens. Longview and Kelso form the population center, with timber, mills, river shipping and the volcano's tourism economy.

Cities, Towns & Communities

3 full community guides available in this county.

Attractions

  • Mount St. Helens National Volcanic Monument
  • Lake Sacajawea
  • Kalama River

Parks & Recreation

  • Lake Sacajawea Park
  • Seaquest State Park
  • Merrill Lake

Transportation

Interstate 5 follows the Cowlitz River corridor; the Port of Longview handles exports, and the Amtrak Cascades stops in Kelso.

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