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This is a list of the National Register of Historic Places listings in Jefferson County, Colorado. This is intended to be a complete list of the properties and districts on the National Register of Historic Places in Jefferson County, Colorado, United States. The locations of National Register properties and districts for which the latitude and longitude coordinates are included below, may be seen in a map.There are 87 properties and districts listed on the National Register in the county, including 1 National Historic Landmark.     This National Park Service list is complete through NPS recent listings posted October 13, 2023.

Jefferson County was a county of the extralegal United States Territory of Jefferson that existed from November 28, 1859, until February 28, 1861. Its territory covered a broad swath surrounding the region of the Pike's Peak Gold Rush, and was a functioning democratically elected government until the organization of the Territory of Colorado in 1861. At that time, the successor Jefferson County was permanently created, taking its name from its predecessor and incorporating the heart of its territory.

Jefferson County is a county located in the U.S. state of Colorado. As of the 2020 census, the population was 582,910, making it the fourth-most populous county in Colorado. The county seat is Golden, and the most populous city's Lakewood. Jefferson County is included in the Denver-Aurora-Lakewood, CO Metropolitan Statistical Area. Located along the Front Range of the Rocky Mountains, Jefferson County is adjacent to the state capital of Denver. In 2010, the center of population of Colorado was located in Jefferson County.The county's slogan is the "Gateway to the Rocky Mountains", and it is commonly nicknamed Jeffco. The name Jeffco is incorporated in the name of the Jeffco School District, the Jeffco Business Center Metropolitan District No. 1, and several businesses located in Jefferson County. Jeffco is also incorporated in the unofficial monikers of many Jefferson County agencies. The Rocky Mountain Metropolitan Airport operated by Jefferson County was previously known as the Jeffco Airport. A major employer in Jefferson County is the large Coors Brewing Company in Golden. Also, the state-supported Colorado School of Mines, a university specializing in mining, geology, chemistry, and engineering is located in Jefferson County.

Tiny Town & Railroad is a miniature village containing over 100 1/6 scale buildings and a 15 in (381 mm) gauge miniature railway close to Morrison, Colorado.

Geneva Glen Camp is a co-educational, non-profit, residential summer camp located in Indian Hills, Colorado. Geneva Glen Camp is accredited by the American Camp Association.

KRMT (channel 41) is a religious television station in Denver, Colorado, United States, airing programming from the Daystar Television Network. It is owned and operated by Daystar through its Community Television Educators subsidiary, and maintains offices on West 64th Avenue in Arvada, and its transmitter is located on Mount Lindo in rural southwestern Jefferson County.

The Everhardt Ranch, located in southeast of Evergreen, Colorado, dates from 1867. A portion of the ranch with three of its historic buildings was listed on the National Register of Historic Places in 1980.It was deemed "significant for its associations with Johnny Everhardt and Gus and Marie Herzman, pioneer settlers in the Evergreen area, and for its architectural features which reflect the characteristic features of an early Colorado mountain ranch."It is located about .25 miles (0.40 km) southeast of the junction of Lone Peak Drive and North Mountain Park Rd., northeast of Evergreen Highlands and west of High Dr., about 4 miles (6.4 km) southeast of Evergreen.Its nomination was written in cooperation with Hiwan Homestead Museum.

Midway House, also known as Broken M Bar Ranch and Meyer Ranch, is an 1889 Queen Anne ranch house located near Aspen Park, Colorado. It is listed on the National Register of Historic Places.

The LoDaisKa site is a prominent archaeological site in the U.S. state of Colorado, located within a rockshelter near Morrison. The rockshelter was first inhabited by people of the Archaic through the Middle Ceramic period, generally spanning 3000 BC to 1000 AD.

The Fort is a historic restaurant in Morrison, Colorado. The structure was inspired by Bent's Fort.In 1997 the restaurant hosted President Bill Clinton’s state dinner for the 23rd G8 summit.