Monmouth, Oregon

Monmouth, Oregon
Main Street looking east
Location in Oregon
Monmouth, Oregon
Location in the United States
Coordinates: 44°51′03″N 123°13′42″W / 44.85083°N 123.22833°W / 44.85083; -123.22833
CountryUnited States
StateOregon
CountyPolk
Incorporated1859
Government
 • MayorCecelia Koontz
Area
 • Total
2.33 sq mi (6.04 km2)
 • Land2.25 sq mi (5.82 km2)
 • Water0.081 sq mi (0.21 km2)
Elevation
207 ft (63 m)
Population
 (2020)
 • Total
11,110
 • Density4,940.6/sq mi (1,907.59/km2)
Time zoneUTC-8 (Pacific)
 • Summer (DST)UTC-7 (Pacific)
ZIP code
97361
Area code503
FIPS code41-49550
GNIS feature ID2411134
Websitewww.ci.monmouth.or.us

Monmouth (/ˈmɒnməθ/) is a city of Polk County in the U.S. state of Oregon. It was named after Monmouth, Illinois, the origin of its earliest settlers. The population is 11,110 as of the 2020 Census; and Monmouth is part of the Salem Metropolitan Statistical Area. The city is home to Western Oregon University. The city’s first public library, Monmouth Public Library, opened in 1934.