National Register of Historic Places listings in Pitkin County, Colorado

Pitkin County is a county in the U.S. state of Colorado. As of the 2020 census, the population was 17,358. The county seat and largest city is Aspen. The county is named for Colorado Governor Frederick Walker Pitkin. Pitkin County has the seventh-highest per capita income of any U.S. county. Measured by mean income of the top 5% of earners, it is the wealthiest U.S. county.Pitkin County is included in the Glenwood Springs Micropolitan Statistical Area, which is also included in the Edwards-Glenwood Springs Combined Statistical Area.

The Snowmastodon site, also known as the Ziegler Reservoir fossil site, is the location of an important Ice Age fossil excavation near Snowmass Village, Colorado. Fossils were first discovered on October 14, 2010, during the construction of a 5 hectares (12 acres) reservoir to supply Snowmass Village with water. Over the subsequent weeks, after an agreement had been reached to allow paleontological excavation, crews from the Denver Museum of Nature & Science and the U.S. Geological Survey worked along with the construction crews as more fossil material was uncovered. The site closed for five months over the winter, reopening May 15, 2011. Between May 15 and July 4, 2011, crews from the Denver Museum of Nature & Science conducted a large scale fossil excavation alongside construction crews building a dam for the reservoir. In total over 36,000 vertebrate fossils (including mammoths, mastodons, ground sloths, horses, camels and deer), more than 100 species of fossil invertebrates and over 100 species of fossil plants were found in sediments deposited by an alpine lake during the last interglacial period.

Anderson Ranch Arts Center is a non-profit arts organization and art gallery founded in 1966 and located in Snowmass Village, Colorado. The center hosts an artist residency program, summer arts workshops and a January workshop intensive.

Snowmass Village is a home rule municipality in Pitkin County, Colorado, United States. The population was 3,096 at the 2020 census. A popular winter resort location for skiing and snowboarding, the town is well known as the location of the Snowmass ski area, the largest of the four nearby ski areas operated collectively as Aspen/Snowmass. In 2010, the accidental discovery by a bulldozer operator of fossilized elements of a Pleistocene ecosystem in the ice age lake bed at the Ziegler Reservoir (commonly referred to as the Snowmastodon site) put Snowmass Village prominently on the paleontological map of North America.

KSNO-FM (103.9 FM), is a radio station broadcasting a classic rock format. Licensed to Snowmass Village, Colorado, United States, it serves the Aspen and Roaring Fork Valley area, broadcasting from Glenwood Springs to Aspen and into the Snowmass Creek Valley, Redstone and beyond. KSNO was founded as an AM station in 1964 and received its FM licence in the 1980's. The station is owned by Wild Goose LLC and Managed by Andrew C. Scott, founder of the Open Mind Project (www.openmindproject.com), through licensee Wild Goose LLC. KSNO also broadcasts live on the web at www.KSNO.com.

Snowmass is a ski resort located in the Town of Snowmass Village near Aspen, Colorado. The ski area is owned and operated by the Aspen Skiing Company as part of the Aspen/Snowmass complex. It was opened on December 17, 1967 . Snowmass is the largest of the four Aspen/Snowmass mountains, comprising 3,362 acres (1,361 ha).

On March 29, 2001, a chartered Gulfstream III business jet operated by Avjet from Los Angeles, California, to Aspen, Colorado, crashed into the ground while on final approach. All three crew members and 15 passengers on board perished.The subsequent investigation by the National Transportation Safety Board (NTSB) concluded that the cause of the accident was the captain's premature descent below the minimum descent altitude, carried out without having the runway in sight.The accident's investigation also brought into focus several generic safety issues, such as pressure applied on charter pilots by customers, night flight into airports near mountainous terrain, and the ambiguity of some Federal Aviation Administration rules.

The Roman Abramovich Wildcat Ridge house is a 14,300-square-foot (1,330 m2) mansion at Wildcat Ridge near Snowmass Village, Colorado. The 11-bedroom, 12-bath mansion, and 200 acres (81 ha) of land it stands on, called a "ranch" by The Wall Street Journal, have an estimated worth of $50 million as of 2022, and was owned by Roman Abramovich. He bought the property for $36.375 million in 2008, at the time the third most expensive residential real estate transaction in Pitkin County, Colorado.Built in 2004, the architect was Bart Voorsanger, who also designed the Asia Society Museum in Manhattan.Media reported that the property could be subject to sanctions by the United States government during the 2022 Russian invasion of Ukraine. County commissioner Greg Poschman asked Colorado Deputy Attorney General Kurtis Morrison to investigate why sanctions to date did not target the property, stating to media his question was "if there was illegal activity and the [United States government] overlooked it for some reason".

Aspen/Pitkin County Airport (IATA: ASE, ICAO: KASE, FAA LID: ASE), also known as Sardy Field, is a county-owned public-use airport located three nautical miles (6 km) northwest of the central business district of Aspen, in Pitkin County, Colorado, United States. Aspen/Pitkin Co. Airport/Sardy Field covers an area of 573 acres (232 ha) at an elevation of 7,820 feet (2,384 m) above mean sea level. It has one asphalt paved runway designated 15/33 which measures 8,006 by 100 feet (2,440 x 30 m).It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2019–2023, in which it is categorized as a non-hub primary commercial service facility.

KASP-LP (107.9 MHz FM) is a low-power radio station rebroadcasting NOAA Weather Radio station WWG43 in Glenwood Springs, Colorado. Licensed to Aspen, Colorado, United States, it serves the Aspen area. The station is currently owned by the Colorado Department of Transportation.

Woody Creek is an unincorporated town, a post office, and a census-designated place (CDP) located in and governed by Pitkin County, Colorado, United States. The Woody Creek post office has the ZIP Code 81656 (post office boxes). At the United States Census 2020, the population of the Woody Creek CDP was 290. The Woody Creek Metropolitan District provides services. The CDP is a part of the Glenwood Springs, CO Micropolitan Statistical Area.

The original Maroon Creek Bridge is a steel trestle along State Highway 82 at the western boundary of Aspen, Colorado, United States. It was designed by George S. Morison in 1888 for the Colorado Midland Railroad, one of the last viaducts in Colorado built for a standard gauge mountain railroad in the 19th century. Of the five steel bridges the Midland built, it is the only one still extant. Due to the later removal of most track and the rail depots, the bridge is the most visible remnant of rail service to Aspen. In 1985 it was listed on the National Register of Historic Places along with other highway bridges in the state, including the Sheely Bridge, also in Aspen.When it was built, the Midland was ahead in its race with the Denver and Rio Grande to make the first rail connection to Aspen, then a booming silver mining center. The Midland had followed the Roaring Fork Valley up from its main line at Glenwood Springs, but was stalled at Maroon Creek by a delay in the bridge steel. The Rio Grande was thus able to make up the difference and bring the first train to Aspen, with the Midland following a few months later. Aspen's boom years ended a few years later, and by the 1920s the bridge was abandoned. It was soon expanded and converted to use as a road bridge. It served as the main entrance to Aspen for many visitors as the city's economy rebounded when the Aspen Mountain ski resort was developed after World War II. As growth spilled over to Aspen's west, it became a traffic choke point for the region. It remained in use until longstanding plans for a newer, wider bridge came to fruition in 2008. At that time the original bridge was the oldest one still in use on Colorado's state highways. The award-winning new bridge was designed to be aesthetically similar to its predecessor, which remains in service as a foot bridge. It may be used for a light rail line to further alleviate traffic problems in the valley.