St. Helens, Oregon

St. Helens, Oregon
The Columbia County Courthouse with Mount St. Helens in the background
Location in Oregon
Coordinates: 45°51′34″N 122°48′50″W / 45.85944°N 122.81389°W / 45.85944; -122.81389
CountryUnited States
StateOregon
CountyColumbia
Incorporated1889
Government
 • TypeMayor-council government
 • MayorJennifer Massey
Area
 • Total
5.95 sq mi (15.41 km2)
 • Land4.83 sq mi (12.51 km2)
 • Water1.12 sq mi (2.90 km2)
Elevation
89 ft (27 m)
Population
 (2020)
 • Total
13,817
 • Density2,860.2/sq mi (1,104.33/km2)
Time zoneUTC−8 (Pacific)
 • Summer (DST)UTC−7 (Pacific)
Zip Code
97051
FIPS code41-64600
GNIS feature ID2411759
Websitehttps://www.sthelensoregon.gov

St. Helens is a city in and the county seat of Columbia County, Oregon. It was founded by Captain Henry Montgomery Knighton, a native of New England, in 1845, as "Plymouth". The name was changed to St. Helens in the latter part of 1850 for its view of Mount St. Helens, roughly 39 miles (63 km) away in Washington. The city is about 28 miles (45 km) northwest of Portland. As of the 2020 census, St. Helens had a population of 13,817.