Denver in the context of "Salt Lake County, Utah"

An airport is an aerodrome with extended facilities, mostly for commercial air transport. They usually consist of a landing area, which comprises an aerially accessible open space including at least one operationally active surface such as a runway for a plane to take off and to land or a helipad, and often includes adjacent utility buildings such as control towers, hangars and terminals, to maintain and monitor aircraft. Larger airports may have airport aprons, taxiway bridges, air traffic control centres, passenger facilities such as restaurants and lounges, and emergency services. In some countries, the US in particular, airports also typically have one or more fixed-base operators, serving general aviation.

Airport operations are extremely complex, with a complicated system of aircraft support services, passenger services, and aircraft control services contained within the operation. Thus airports can be major employers, as well as important hubs for tourism and other kinds of transit. Because they are sites of operation for heavy machinery, a number of regulations and safety measures have been implemented in airports, in order to reduce hazards. Additionally, airports have major local environmental impacts, as both large sources of air pollution, noise pollution and other environmental impacts, making them sites that acutely experience the environmental effects of aviation. Airports are also vulnerable infrastructure to extreme weather, climate change caused sea level rise and other disasters.

Colorado Springs is the home rule city that is the county seat of and the most populous city in El Paso County, Colorado, United States. The city had a population of 478,961 at the 2020 census, a 15.02% increase since 2010. Colorado Springs is the second-most populous city and most extensive city in the state of Colorado, and the 40th-most-populous city in the United States. It is the principal city of the Colorado Springs metropolitan area, which had 755,105 residents in 2020, and the second-most prominent city of the Front Range Urban Corridor. It is located in east-central Colorado on Fountain Creek, 70 miles (113 km) south of Denver.

At 6,035 feet (1,839 m), the city stands over 1 mile (1.6 km) above sea level. It is near the base of Pikes Peak, which rises 14,115 feet (4,302.31 m) above sea level on the eastern edge of the Southern Rocky Mountains. The city is the largest city north of Mexico above 6,000 feet (1,800 m) in elevation.

This is a list of the 50 states, the 5 territories, and the District of Columbia of the United States of America by population density, population size, and land area. It also includes a sortable table of density by states, territories, divisions, and regions by population rank and land area, and a sortable table for density by states, divisions, regions, and territories in square miles and square kilometers.

The population density of the United States is lower than that of many other countries because of the United States' large land area. There are large, sparsely populated areas in parts of the US, like the east-to-west stretch extending from Minneapolis to the outskirts of Seattle, or the north-to-south portion from northern Montana to southern New Mexico, excluding Denver and Albuquerque. For comparison, the population density of the U.S. is 1/15 that of South Korea and 1/12 that of India and the Netherlands. On the other hand, it is over 8 times higher than that of Canada and over 9 times higher than that of Australia.

Denver International Airport (IATA: DEN, ICAO: KDEN, FAA LID: DEN), often referred to by locals as DIA, is an international airport in the Western United States, primarily serving metropolitan Denver, Colorado, as well as the greater Front Range Urban Corridor.

Runway 16R/34L, with a length of 16,000 feet (3.03 mi; 4.88 km), is the longest public use runway in North America and the seventh longest on Earth. The airport is 25 miles (40 km) driving distance northeast of Downtown Denver, 19 miles (31 km) farther than the former Stapleton International Airport which DEN replaced; the airport is actually closer to the City of Aurora than central Denver, and many airport-related services, such as hotels, are located in Aurora.

This is a list of the 100 most populous of the 3,144 counties in the United States based on the national decennial US census conducted on April 1, 2020, and vintage Census population estimates for July 1, 2024.

Many of the counties on the list include major cities or metropolitan areas in all parts of the United States. Seven of the listed counties have consolidated city and county government, namely the City and County of Honolulu, Metropolitan Government of Nashville and Davidson County, Tennessee, City and County of Philadelphia, City and County of San Francisco, City of Jacksonville and Duval County, Indianapolis and Marion County, and City and County of Denver. Kings County, Queens County, New York County, Bronx County, and Richmond County are coterminous with the respective boroughs of New York City; they fall under the jurisdiction of the combined Government of New York City. Independent cities are not counted.

The U.S. State of Colorado has 273 active municipalities, comprising 198 towns, 73 cities, and two consolidated city and county governments. The City and County of Denver, the state capital, is the oldest municipality in Colorado. On December 3, 1859, the extralegal Territory of Jefferson granted a charter to the consolidated City of Denver, Auraria, and Highland. The Town of Keystone, incorporated on February 8, 2024, is the newest Colorado municipality.

Colorado municipalities range in population from the City and County of Denver with a 2020 population of 715,522, to the Town of Carbonate, which has had no year-round population since the 1890 Census due to its severe winter weather and difficult access. The City of Black Hawk with a 2020 population of 127 is the least populous Colorado city, while the Town of Castle Rock with a 2020 population of 73,158 is the most populous Colorado town.

El Paso County is the most populous county in the U.S state of Colorado. As of the 2020 census, the population was 730,395, surpassing the city and county of Denver. The county seat is Colorado Springs, the second most populous city in Colorado. El Paso County is included in the Colorado Springs, Colorado, Metropolitan Statistical Area.

The Front Range Urban Corridor is an oblong region of urban population located along the eastern face of the Southern Rocky Mountains, encompassing 18 counties in the US states of Colorado and Wyoming. The corridor derives its name from the Front Range, the mountain range that defines the western boundary of the corridor which serves as a gateway to the Rocky Mountains. The region comprises the northern portion of the Southern Rocky Mountain Front geographic area, which in turn comprises the southern portion of the Rocky Mountain Front geographic area of Canada and the United States. The Front Range Urban Corridor had a population of 5,055,344 at the 2020 census, an increase of +16.65% since the 2010 census, and an estimated population of 5,226,455 as of 2024 census estimates.

The corridor contains some of the West's largest cities, such as Denver and Colorado Springs. It also contains smaller cities such as Pueblo and Cheyenne. Its main transportation corridor is Interstate 25. There have been many proposals for Front Range Passenger Rail. None have come to fruition as of 2021, though plans are under development.

Foothills or piedmont are geographically defined as gradual increases in elevation at the base of a mountain range, higher hill range or an upland area. They are a transition zone between plains and low relief hills and the adjacent topographically higher mountains, hills, and uplands. Frequently foothills consist of alluvial fans, coalesced alluvial fans, and dissected plateaus.