National Register of Historic Places listings in Lake County, Colorado

Carbonate County was a county of the state of Colorado that existed for only two days in 1879. Carbonate County was created by renaming Lake County, Colorado.

Lake Fork is a tributary of the Arkansas River in Lake County, Colorado. The river rises in the Holy Cross Wilderness north of Mount Massive in the Northern Sawatch Range of Colorado. It flows through Timberline Lake and then through Turquoise Lake west of Leadville. The river then flows south and joins the Arkansas River southwest of Leadville and west of U.S. Highway 24.

Lake County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 7,436. The county seat and the only municipality in the county is Leadville. The highest natural point in Colorado and the entire Rocky Mountains is the summit of Mount Elbert in Lake County at 14,440 feet (4,400 meters) elevation.

The California Gulch site consists of approximately 18 square miles in Lake County, Colorado. The area includes the city of Leadville, parts of the Leadville Historic Mining District and a section of the Arkansas River from the confluence of California Gulch downstream to the confluence of Two-Bit Gulch. The site was listed as a Superfund site in 1983.

Lake County Airport (IATA: LXV, ICAO: KLXV, FAA LID: LXV), also known as Leadville Airport, is a county-owned public-use airport located two nautical miles (3.7 km) southwest of the central business district of Leadville, a city in Lake County, Colorado, United States. According to the FAA's National Plan of Integrated Airport Systems for 2009–2013, it is categorized as a general aviation airport.At an elevation of 9,934 ft (3,026 m) above mean sea level the airport claims the distinction of being North America's highest. Pilots receive a free certificate commemorating their landing upon a successful landing. Aircraft performance deteriorates rapidly with altitude, so many organizations use the Leadville Airport as a base for high-altitude performance testing.

The High Mountain Institute (HMI) is a non-profit educational organization located in Leadville, Colorado. Founded in 1995 by Molly and Christopher Barnes, HMI focuses on educating teenagers through interaction with the natural world of the American West and Patagonia, South America. The school offers semester and summer programs for high school students, gap year programming for high school graduates, and short programs for middle school students and adults.

Leadville National Fish Hatchery established in 1889 west of Leadville, Colorado is one of 70 hatcheries in the National Fish Hatchery System. It is managed by the United States Fish and Wildlife Service. It lies within the Mount Massive Wilderness, most of whose area lies within San Isabel National Forest and which is managed by the United States Forest Service. Leadville National Fish Hatchery was listed on the National Register of Historic Places in 1980.

St. Vincent Health is a critical access hospital in Leadville, Colorado, in Lake County. The hospital has 8 beds. The hospital does not currently have a trauma center designation but does have an emergency department.

The Mineral Belt National Recreation Trail is an 11.6 mile all-season biking/walking trail that loops around Leadville, Colorado and through its historic mining district. The trail's setting is quintessentially Colorado Rocky Mountain landscape. Groves of aspen, conifer forests, wildflower meadows, and open vista sage parks are interspersed with once-booming mine sites. Ever-present views of the Sawatch and Mosquito mountain ranges provide perspective and a sense of permanence to the area. Several signs along the way provide historical snippets about Leadville's colorful past. The trail is designed for bicycles, longboards, walkers, wheelchairs, strollers and in-line skaters. When the snow falls, snowcats groom the trail to provide access to Nordic skiers, snowshoers and winter-bikers. About six miles of this trail meanders through the historic Leadville Mining District. In part the trail follows old mining-camp railbeds. "What makes this trail unique is that it goes through one of the greatest mining districts in the world," says Lake County, Colorado Assessor Howard A. Tritz, an original member of the group which spearheaded trail development. "It has some of the best scenery anywhere, and it's accessible and available to everyone, visitors and locals alike, regardless of age or ability."

KLEV-LP (107.9 FM) is a radio station licensed to Leadville, Colorado, United States. The station is currently owned by State of Colorado Telecommunication Services.

Temple Israel is a former synagogue, now Jewish history museum, located at 201 West 4th Street in Leadville, Colorado, in the United States. The former synagogue was erected during the summer of 1884 in less than two months. The Temple Israel building is a rare example of a frontier synagogue.