Kelso, Washington

Kelso, Washington
Main Post Office in Kelso in 2009
Motto: 
"City of Friendly People"
Interactive map of Kelso, Washington
Coordinates: 46°07′31″N 122°53′12″W / 46.12528°N 122.88667°W / 46.12528; -122.88667
CountryUnited States
StateWashington
CountyCowlitz
Platted1884
Government
 • TypeCouncil-manager
 • City managerAndrew O. Hamilton
 • MayorVeryl Anderson
Area
 • Total
8.84 sq mi (22.89 km2)
 • Land8.14 sq mi (21.07 km2)
 • Water0.70 sq mi (1.82 km2)
Elevation
13 ft (4.0 m)
Population
 (2020)
 • Total
12,720
 • Density1,526.3/sq mi (589.32/km2)
Time zoneUTC-8 (Pacific (PST))
 • Summer (DST)UTC-7 (PDT)
ZIP code
98626
Area code360
FIPS code53-35065
GNIS feature ID2410174
Websitekelso.gov

Kelso is a city in southwestern Cowlitz County, Washington, United States. At the 2020 census, the population was 12,720. Kelso is part of the Longview, Washington Metropolitan statistical area, which has a population of 110,730. Kelso shares its long western border with Longview. It is near Mount St. Helens.