Louisville, Colorado

Louisville, Colorado
City of Louisville
The Louisville Public Library, built in 2006
(American Institute of Architects Award, 2007)
Location of the City of Louisville in Boulder County, Colorado.
Louisville
Location of the City of Louisville in the United States.
Coordinates: 39°58′14″N 105°07′50″W / 39.97056°N 105.13056°W / 39.97056; -105.13056
Country United States
State Colorado
CountyBoulder County
CityLouisville
Settled1877
IncorporatedJune 3, 1882
Government
  TypeHome rule municipality
  MayorChris Leh
Area
  Total
20.89 km2 (8.06 sq mi)
  Land20.60 km2 (7.95 sq mi)
  Water0.29 km2 (0.11 sq mi)
Elevation
1,646 m (5,401 ft)
Population
 (2020)
  Total
21,226
  Density1,000/km2 (2,600/sq mi)
Time zoneUTC−7 (MST)
  Summer (DST)UTC−6 (MDT)
ZIP codes
80027-80028
Area code(s)303, 720
FIPS code08-46355
GNIS feature ID2410884
HighwaysUS 36, SH 42, Northwest Parkway NW Parkway
Websitewww.louisvilleco.gov

The City of Louisville (/ˈlɪsvɪl/ ) is a home rule municipality located in southeastern Boulder County, Colorado, United States. The city population was 21,226 at the 2020 United States census. Louisville began as a mining community in 1877, experienced a period of labor violence early in the 20th century, and transitioned to a suburban residential community when the mines closed in the 1950s.