Browse / United States / Washington / Kelso
Kelso
Washingtoncity
Kelso
Total population
12,684
Median home value
$337,600
Bachelor's+
Median income
$66,751
Founded
1884
Demographic figures from US Census Bureau · ACS 5-year estimates. Overview below cites Wikipedia and may reference a different year.
City facts
Sister cities
Facts from Wikidata (CC0).
Overview
Kelso is a city in and the county seat of 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.
Read more on WikipediaHistory & geography
History
The earliest known inhabitants of the area were the Cowlitz people, part of the Sahaptin and Salish people. About 6,000 Cowlitz were living in longhouses in villages along the Cowlitz River in 1855. The Cowlitz Tribe met with others at the Chehalis River Treaty Council in 1855 and declined to sign a treaty with the Washington Territory which would have required them to move away to a reservation. Many remained in the area until the tribe received federal recognition: its current headquarters is in nearby Longview. Kelso was founded by Peter W. Crawford, a Scottish surveyor, who, in 1847, took up the first donation land claim on the lower Cowlitz River. Crawford platted a townsite which he named after his home town of Kelso, Scotland. The original plat was dated and filed in October 1884. It became incorporated in 1889. In its early days, Kelso obtained the nickname "Little Chicago" as it became famous for its large number of taverns and brothels that catered to local loggers. On weekends, trainloads of loggers would come into town from the surrounding region looking for women, liquor, gambling and fights. The FBI finally forced the mayor to shut them down in the 1950s, with the last tavern/brothel closing in the mid-1960s. The economy continues to be based largely on wood products. In the late 19th century and into the first part of the 20th century, Kelso was the center for commercial smelt fishing on the Cowlitz River. In 1910, according to the Oregonian Newspaper, 5,000 tons of fish were caught. The Kelso Chamber of Commerce created the slogan in 1956 and became known as the Smelt Capital of the World. The Cowlitz River has historically had heavy runs of smelt and were shipped to markets around the country. Smelt numbers have declined significantly in the past…
Geography
Kelso is mostly situated on the east side of the Cowlitz River near the Columbia River, opposite from its twin city of Longview on the west bank. It includes a small section west of the river, West Kelso. It is located on Interstate 5 approximately north of Portland, Oregon, and south of Seattle. According to the United States Census Bureau, the city has a total area of , of which is land and is water. The Columbia, Cowlitz, and Coweeman rivers were used as part of a historical transportation route from Portland, Oregon, to the Puget Sound. Cowlitz steamboats were used as a mode of transportation until 1918. * Aldercrest * Butler Acres * Davis Terrace * East Kelso * Hilltop * Lexington * Mt. Brynion * Mt Pleasant * North Kelso * Old Kelso Hill * Rose Valley * South Kelso * West Kelso
Excerpted from the corresponding Wikipedia article (CC BY-SA).
Demographics & economy
Race & ethnicity
Source: US Census Bureau — American Community Survey, 5-year estimates.
Geography
Coordinates & boundaries from the US Census TIGER/Line shapefiles.
Climate
Current forecast
Forecast for Kelso, WA from NOAA NWS API.
Air quality
Industrial & pollution facilities
Natural hazard risk
Health (adults)
Age-adjusted prevalence estimates from CDC PLACES (latest release).
Walkability
Amenities nearby
Wildlife & biodiversity
Most-observed species
- Dark-eyed JuncoJunco hyemalis (Linnaeus, 1758) · Aves9,199
- Song SparrowMelospiza melodia (A.Wilson, 1810) · Aves8,014
- Mourning DoveZenaida macroura (Linnaeus, 1758) · Aves7,567
- Steller's JayCyanocitta stelleri (Gmelin, 1788) · Aves7,488
- Spotted TowheePipilo maculatus Swainson, 1827 · Aves5,786
- American RobinTurdus migratorius Linnaeus, 1766 · Aves5,773
- Golden-crowned SparrowZonotrichia atricapilla (J.F.Gmelin, 1789) · Aves5,666
- Black-capped ChickadeePoecile atricapillus (Linnaeus, 1766) · Aves5,656
Citizen-science & research observations from the Global Biodiversity Information Facility (GBIF).
Schools
Earthquake history
Most recent
- M 3.75 — 2026-09-0520 km E of Castle Rock, Washington
- M 2.61 — 2026-07-3118 km NE of Amboy, Washington
- M 2.52 — 2026-03-177 km SE of Mineral, Washington
- M 2.65 — 2025-12-195 km WSW of Pe Ell, Washington
- M 2.84 — 2025-09-133 km NE of Mineral, Washington
- M 2.66 — 2025-06-167 km ESE of Mossyrock, Washington
Events from the USGS Earthquake Catalog (global) (FDSN Event Web Service).
Photos
Sights & places nearby
Notable people from here








People born within ~10 km, from Wikidata (CC0). Click any name for their Wikipedia article.
Nearby places in Washington
Geography & sun
Elevation, sunrise/sunset and daylight from Open-Meteo. Solar climatology from NASA POWER.
Nearby airports
Public attention
Pageview totals from the Wikimedia Pageviews API.
Books about Kelso

Search results from Open Library.
Recent natural events nearby
- Wildfire HIGH LAVA, Skamania, WashingtonWildfires · 2026-07-23 · 40 mi
- Wildfire Austin Non-Stat, Clackamas, OregonWildfires · 2026-08-12 · 88 mi
- Wildfire AUSTIN, Clackamas, OregonWildfires · 2026-08-09 · 88 mi
- Wildfire GRASSHOPPER, Wasco, OregonWildfires · 2026-07-23 · 89 mi
- Wildfire 8 MILE, Wasco, OregonWildfires · 2026-07-24 · 91 mi
- Wildfire RANSIER, Yakima, WashingtonWildfires · 2026-07-26 · 104 mi
- Wildfire Signal Peak, Yakima, WashingtonWildfires · 2026-07-24 · 104 mi
- Wildfire KING, Kittitas, WashingtonWildfires · 2026-08-19 · 121 mi
Wildfires, storms and other events from NASA EONET (last 12 months, within 250 mi).
Ground air-quality sensors
Recently spotted species









Research-grade observations from iNaturalist (within ~15 mi).
Nearest stream gauge
Events
Gallery
Sources
- • Wikipedia
- • US Census Bureau (ACS 5-year estimates)
- • NOAA National Weather Service
- • Wikidata
- • USGS Earthquake Catalog (global feed)
- • GBIF (Global Biodiversity Information Facility)
- • iNaturalist
- • CDC PLACES
- • Open-Meteo / sunrise-sunset.org
- • Wikipedia Pageviews API
- • Open Library
- • NASA EONET