Kelso, WA

View of Kelso, WA
Image credit: Ian Poellet ( User:Werewombat ) / CC BY-SA 3.0
Population
12,801
U.S. Census Population Estimates Program · 2025
Elevation
66 ft
Median Home Value
$337,600
U.S. Census American Community Survey 5-Year · 2024
Median Rent
$1,220/mo
U.S. Census American Community Survey 5-Year · 2024
Median Income
$66,751
U.S. Census American Community Survey 5-Year · 2024

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Kelso in context.

About Kelso

Kelso is a Cowlitz County city in southwest Washington, located near the meeting of the Cowlitz and Columbia river corridors. The Cowlitz people lived in villages along the river long before American settlement, and that river geography still matters. Kelso serves as the county seat and sits next to Longview, with rail, timber, shipping, and regional services all part of the local story. Historic buildings, older neighborhoods, and access to Mount St. Helens country give the city a working Northwest feel.

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