Aurora, Colorado
Aurora is a home rule city located approximately nine miles east of Denver in north-central Colorado, spanning portions of Arapahoe County, Adams County, and Douglas County.[1] A home rule city, Aurora straddles three counties and recorded a population of 386,261 at the 2020 U.S. Census, making it the third-most-populous city in the State of Colorado and the 51st-most-populous city in the United States. By 2023, the population had grown to approximately 390,000 residents, reflecting steady annual growth. The city sits at an elevation of 5,404 feet above sea level. Once a small speculative settlement platted on the eastern plains, Aurora has grown into a major economic and cultural hub in the Denver–Aurora metropolitan area, anchored today by world-class medical research, aerospace defense contractors, and one of the most culturally diverse populations of any city in Colorado.
History
Before European settlement, the land that now makes up Aurora was the territory of the Arapaho, Cheyenne, Núu-agha-tʉvʉ-pʉ̱ (Ute), and Očeti Šakówiŋ (Sioux) peoples. These lands were claimed by France in 1682 and subsequently became part of the 1803 Louisiana Purchase.
Aurora originated around 1890 as the town of Fletcher, taking its name from Denver businessman Donald Fletcher, who viewed it as a real estate opportunity. He and his partners staked out four square miles east of Denver, but the town — and Colorado — struggled mightily after the Silver Crash of 1893. Fletcher was a real estate developer born in Cobourg, Ontario, Canada, in 1849. The Town of Fletcher was incorporated on May 5, 1903, though Fletcher himself had skipped town, leaving the community with a substantial water debt. Voters decided to rename Fletcher the Town of Aurora in 1907, borrowing the name from one of the subdivisions that composed the town. The Aurora, Colorado, post office opened on January 15, 1908.
In 1928, after reaching a population of more than 2,000 residents, the Colorado Secretary of State recognized Aurora as a city. Aurora slowly began to grow in Denver's shadow, eventually becoming the fastest-growing city in the United States during the late 1970s and early 1980s. By 1980, Aurora's population had reached 158,588, and the city became the third-largest in Colorado.
Aurora today has 34 historic landmarks, 2 historic districts, and 6 cultural heritage sites. Among the most notable surviving historic properties is the Gully Homestead, the oldest surviving home in Aurora, originally part of an Irish immigrant family's ranch at Mississippi Avenue and Chambers Road, where the family raised cattle and horses. The DeLaney Farm Historic District is another important site: originally used by the DeLaney family for raising horses, dairy cattle, and other livestock, the district is a valuable example of the history of farming and ranching in the Aurora area from the 1880s.
Military Heritage
Since the very early years of the city, the military has been a defining part of Aurora's history. For nearly 100 years, Aurora has been home to countless service members and their families.
In 1918, Army General Hospital #21 — later renamed Fitzsimons Army Hospital — opened, with the U.S. government expanding and upgrading the hospital facilities in 1941, just in time to care for the wounded servicemen of World War II. Lowry Air Force Base was opened in 1938, straddling the border of Aurora and Denver. It eventually closed in 1994 and has been redeveloped into a master-planned community featuring residential, commercial, business, and educational facilities. In 1942, the Army Air Corps built Buckley Field, which has since been renamed Naval Air Station, then Buckley Air National Guard Base, Buckley Air Force Base, and finally Buckley Space Force Base. The base, home of the Buckley Garrison and the 140th Wing Colorado Air National Guard, is Aurora's largest employer.
The Fitzsimons Army Hospital drew notable visitors throughout the 20th century. President Warren G. Harding visited the hospital in 1923, and President Franklin D. Roosevelt visited in 1936. In 1943, the hospital was the birthplace of 2004 Democratic presidential candidate John Kerry. President Dwight D. Eisenhower recovered from a heart attack at Fitzsimons for seven weeks during the fall of 1955.
Growth boomed during the post-war years due primarily to the three military installations: Lowry Air Force Base, Fitzsimons Army Hospital, and Buckley Air Base. Those who wish to honor Colorado's fallen can visit the Colorado Freedom Memorial, an exquisite glass panel building that enshrines the names of over 6,000 men and women who died in the line of duty since Colorado became a state.
Geography and Climate
According to 2023 data from the United States Census, Aurora has a total area of 104,696 acres (approximately 423.7 km²), including 371 acres of water. The city is about 6 percent more extensive than neighboring Denver but 80 percent of the size of Colorado Springs, ranking as the 54th-largest U.S. city in land area. Aurora's footprint overlaps with three different counties: Arapahoe, Adams, and Douglas.
Aurora experiences a semi-arid climate typical of Colorado's Front Range. The city's Köppen climate classification is BSk, with four distinct seasons and modest precipitation year-round. Summers range from mild to hot, with generally low humidity and frequent afternoon thunderstorms, and Aurora averages about one dozen tornado warnings throughout its tornado season, which runs from April to July. Despite cold winters, the city experiences over 300 days of sunshine annually. The average annual temperature is 51 degrees Fahrenheit, ranging from a low of about 19 degrees in December and January to a high of approximately 89 degrees in July.
Aurora is composed of dozens of neighborhoods, districts, and current and former military installations. The city's original downtown district centers on East Colfax Avenue, the area known as Downtown A-Town centering around East Colfax Avenue between Yosemite and Peoria Street. Denver International Airport lies to the northeast of Aurora. Much of Aurora is more convenient to Denver International Airport than Denver itself, and the city is planning an Aerotropolis along the airport's southern flank.
Economy
Aurora is a diverse, growing city of over 414,000 people and more than 150,000 jobs. The economy draws from several major sectors, including healthcare and bioscience, aerospace and defense, retail, and construction. The economy employs approximately 206,000 workers, with the largest industries being Health Care & Social Assistance, Retail Trade, and Construction.
The transformation of the former Fitzsimons Army Hospital campus into the Anschutz Medical Campus stands as one of the most significant economic developments in Aurora's recent history. Decommissioned in 1999, the Fitzsimons facility is now part of the Anschutz Medical Campus of the University of Colorado Denver, which also includes the University of Colorado Hospital — which moved to Aurora from Denver in 2007 — and Children's Hospital Colorado. The campus services more than 4,500 students across more than 40 degree programs and six schools and colleges, supported by $692 million in research awards in fiscal year 2022, creating an overall economic impact to Colorado of $8.5 billion. It is the largest academic-based health care provider in the Rocky Mountains. The innovative environment of the campus has been responsible for over 1,300 patent applications and 53 new companies spawned from campus research since 2002.
Major aerospace and defense employers include Lockheed Martin and Raytheon Technologies. Other prominent employers in the area include Marriott International, Children's Hospital Colorado, Kaiser Permanente, and Northrop Grumman. Interstates 70 and 225, the E-470 toll road, and Colfax Avenue connect Aurora commuters to major employers across the Denver metro, including the Denver Tech Center and the Central Business District.
As of 2023, the median household income in Aurora was $84,320. The metro Denver average single-family home sales price was around $720,000 in 2024, compared to almost $525,000 in Aurora, reflecting the city's relative housing affordability within the broader metro region.
Demographics, Culture, and Arts
Colorado's third-largest city after Denver and Colorado Springs, Aurora is also the most diverse. As of 2023, approximately 21.4 percent of Aurora's residents — about 83,400 people — were born outside of the United States. About 20 percent of residents were born outside the United States, most hailing from Mexico and Ethiopia, and a third of the population speaks a language other than English at home. The city speaks more than 150 languages and is home to over 350 international restaurants, reflecting the breadth of its immigrant communities.[2]
Aurora has created a 10-year Immigrant Integration Plan to promote an integrated society independent of Denver's shadow, with top priorities including the promotion of small businesses and improving housing. Local government is also working with nonprofits to build community advocacy, aid pathways to citizenship, and build an integrated culture.
Aurora's arts and cultural scene is centered on the Aurora Cultural Arts District along East Colfax Avenue. One major anchor is The People's Building, an arts hub the city transformed from an abandoned furniture store into a small theater and gallery space for local artists. The Aurora Symphony Orchestra, a community orchestra established in 1978, offers a full season of full orchestra concerts annually as well as smaller chamber ensemble performances. The Aurora History Museum is a community-based cultural center featuring a permanent exhibit on Aurora history and two changing exhibit galleries touching on topics related to history and decorative arts.
The city of Aurora manages more than 100 parks, more than 6,000 acres of open space and natural areas, and six award-winning municipal golf courses. The Regional Transportation District (RTD) provides bus services and a light rail throughout Aurora, connecting the city with Lower Downtown Denver, about 14 miles west, and Denver International Airport, nearly 17 miles north.
In 2004, Aurora was honored as Sports Illustrated magazine's 50th-anniversary "Sportstown" for Colorado because of its exemplary involvement in facilitating and enhancing sports. In 2008, Aurora was designated an All-America City by the National Civic League.
In 1965, Mayor Norma O. Walker became the first woman to head a U.S. city with a population over 60,000. Aurora's history also includes a tragic chapter: on July 20, 2012, a heavily armed gunman opened fire in a crowded movie theater in the city, killing 12 people and wounding 58 others before being arrested. A memorial garden for the victims of the 2012 theater shooting is located adjacent to City Hall.