The City of Louisville (/ˈluːɪsvɪl/ ⓘ) is a home rule municipality located in southeastern Boulder County, Colorado, United States.

[9] The Northern Coalfield proved to be highly productive, and eventually, some 30 different mines operated within the current boundaries of Louisville, though not all at the same time.

A great deal of mythology has arisen around the stories of tunnels that connected saloons throughout the city, but these have proven to be unfounded and undocumented.

Instead, during labor conflicts, many citizens found refuge in dirt basements to avoid errant bullets being fired from mine compounds into the city.

The home rule debate came about when Xcel Energy announced plans to replace old power line poles with much larger steel towers.

While the city wanted the power lines to be buried, it discovered it lacked the authority to force Xcel to do this or even to create a taxing district to fund such.

[13] However, an incident report filed by a ranger with Boulder Open Space and Mountain Parks identified two ignition points for the fire.

The second ignition point was upwind from the first, and started around noon of the same day on "western side of the Marshall Mesa trailhead.

There is also a farmers' market that runs on Saturdays from May to October along the 800 block of Front Street, centered around the Steinbaugh Pavilion.