Superior, Colorado | |
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 Rock Creek Ranch subdivision in Superior | |
 Flag | |
 Location of Superior in Boulder County and Jefferson County, Colorado | |
| Coordinates:39°56′02″N105°09′32″W / 39.93389°N 105.15889°W /39.93389; -105.15889 | |
| Country |  United States |
| State |  Colorado |
| Counties[1] | Boulder County,Jefferson County |
| Founded | 1896 |
| Incorporated | June 10, 1904 |
| Government | |
| • Type | Home Rule Municipality[1] |
| • Mayor | Mark Lacis[2] |
| Area | |
• Total | 3.97 sq mi (10.27 km2) |
| • Land | 3.93 sq mi (10.17 km2) |
| • Water | 0.039 sq mi (0.10 km2) |
| Elevation | 5,522 ft (1,683 m) |
| Population | |
• Total | 13,094 |
| • Density | 3,335/sq mi (1,288/km2) |
| Time zone | UTC−7 (MST) |
| • Summer (DST) | UTC−6 (MDT) |
| ZIP code[6] | 80027 |
| Area codes | Both303 and720 |
| FIPS code | 08-75640 |
| GNIS feature ID | 2413354[4] |
| Highways | US 36,SH 128,SH 170 |
| Website | Town Website |
Superior is aHome Rule Town inBoulder County, Colorado,United States, with a small, uninhabited segment of land area extending intoJefferson County. Superior is a suburban community with a population of 13,361 as of 2024.[7] Located in Colorado'sFront Range urban corridor, it is close to the cities ofBoulder,Denver, and the foothills of theFront Range mountains.
Superior is located in Colorado’s Front Range on the western side of theDenver Basin and is a part of theLaramie Formation. The formation is known for its deposits of bituminous and lignitecoal, which led to the area’s development as acoal mining hub in the late 1800s. The area became known as the “Northern Field,” covering a 20-mile (32.19 km) radius from the city of Boulder, extending through the present-day counties of Adams, Boulder, Broomfield, Gilpin, Jefferson, Larimer and Weld.
The land was originally used by Native American people including theArapaho andUte. It was territory of the Southern Arapaho in February 1861, whenColorado Territory and Boulder County were created and the tribe was forced to relocate as part of theTreaty of Fort Wise.
From the perspective of the United States, the area was on the western edge of theKansas Territory when gold was discovered near Idaho Springs, spawning theColorado Gold Rush of 1859.
William C. and Emmaline Hake emigrated from their home in Platteville, Wisconsin as a part of the Colorado gold rush and settled along present-day Coal Creek in 1860. Coal was discovered on the Hake homestead in 1864 after heavy floods exposed a seam along the creek. Hake formalized his ownership of the land in 1870 under theHomestead Acts. He founded the Town of Superior in 1896, and it was formally incorporated in 1904. It was reportedly named after the “superior” quality of coal found in the area, a sub-bituminous grade rather than the lignite predominant in the Northern Field.[8][9]
In 1892, Hake contracted with James Hood to build the Industrial Coal Mine just south of Coal Creek and present-day Original Town Superior. The mine was fully operational by 1895. In 1900, the Hakes sold the Industrial Mine to Northern Coal and Coke Company, which was acquired by theRocky Mountain Fuel Company, which owned the mine from 1911 until it closed in 1945. Northern Coal and Coke and Rocky Mountain Fuel were among the six major coal operators in the Northern Field who signed thefirst union agreement with theUnited Mine Workers District 15 in June 1908. The success of the union movement was attributed in part to the self-sufficient socioeconomic base of the Northern Field, which remained largely agrarian even as the mines flourished. Mining was a winter employment and the majority of miners also held small landholdings, which they farmed in summer.[10][11]
Twolocal history museums display artifacts from Superior's past. Recollections of members of pioneer families in Superior, including the Hakes and Autreys, are preserved as part of theMaria Rogers Oral History Program at the Carnegie Library for Local History in Boulder, Colorado.
After the Industrial Mine closed in 1945, many residents moved out of the area and Superior evolved into a quiet ranching and farming community. The population hovered around 250 until the 1990s, whenRock Creek Ranch, Sagamore, and other subdivisions were built in the town and the population rose dramatically to 9,011 by 2000. More recently,infill and theDowntown Superior mixed-use development have added additional businesses and residences.
Marshall Fire
On December 30, 2021, theMarshall Fire swept through southwestern Boulder County, destroying 1,084 structures in Louisville, Superior and unincorporated Boulder County. Of these, Superior lost 398 structures - 393 residential, four commercial and one public.[12] In Original Town Superior, only seven of the historic homes survived. The Sagamore subdivision was totally lost. The Marshall Fire was the most destructive wildfire in Colorado history. It forced the evacuation of 37,000 residents, killed two persons and caused $2 billion in damages. It was attributed to downed power lines and a possible secondary source of a licensed burn. High winds and unseasonably dry conditions were contributing factors.
Rocky Mountain Metropolitan Airport
In 1960, theRocky Mountain Metropolitan Airport ("RMMA") was opened on the northern edge of Jefferson County. At the time, the population of Superior was approximately 175 citizens. Since the first flight from RMMA, the airport has continued to experience annual growth. As a result of a perceived national pilot shortage, numerous flight schools have established their base of operations at the airport. This has led to conflict between Superior and ,RMMA. As a result, the Town of Superior has filed a lawsuit against the airport.[13] This lawsuit was dismissed on March 28, 2025 by the Boulder County District Court, citing federal preemption.[14][15][16] Superior also ignored previous letters sent by Jefferson County, who is the airport sponsor, warning the town that the new developments of Rock Creek and schools were too close to the airport, and that these new homes would experience repeated noise events and vibrations.[17][18]
Home Rule
On December 10, 2024, Superior held an election adopting aHome Rule Charter.[19]
Superior is at39°55′52″N105°09′33″W / 39.93111°N 105.15917°W /39.93111; -105.15917 (39.93119, −105.159085)[20][21] with an elevation of 5,522 ft (1,683 m).[22] It is bordered by the city ofLouisville to the northeast, the city ofBroomfield to the east and south,Rocky Flats National Wildlife Refuge to the south, andBoulder Countyopen space to the west.U.S. Highway 36, also known as the Denver-Boulder Turnpike, runs along the northeast boundary of the town, and Colorado Route 128A runs along the south.[23]
Acurrent land use map of Superior is maintained by the Planning and Building Department.
According to theUnited States Census Bureau as of 2021, Superior has a total area of 3.972 sq mi (10.29 km2), of which 3.933 sq mi (10.186 km2) is land and 0.039 sq mi (0.101 km2) is water.[20]
According to theKöppen climate classification system, Superior has Dry, Semi-arid, cold climate (BSk). According to theUnited States Department of Agriculture, the PlantHardiness zone is 6a, with an average annual extreme minimum temperature of −10 to −5 °F (−23 to −21 °C).[24]
| Climate data for Superior, Colorado. 1991-2020 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Mean daily maximum °F (°C) | 46 (8) | 47 (8) | 55.4 (13.0) | 61.3 (16.3) | 70 (21) | 82.1 (27.8) | 88.3 (31.3) | 86.1 (30.1) | 78.4 (25.8) | 65.4 (18.6) | 53.8 (12.1) | 45.5 (7.5) | 64.9 (18.3) |
| Mean daily minimum °F (°C) | 20 (−7) | 21 (−6) | 28.1 (−2.2) | 34.2 (1.2) | 43.4 (6.3) | 52.8 (11.6) | 58.9 (14.9) | 56.7 (13.7) | 48.8 (9.3) | 36.8 (2.7) | 27.2 (−2.7) | 19.9 (−6.7) | 37.3 (2.9) |
| Averageprecipitation inches (mm) | 0.60 (15) | 0.75 (19) | 1.59 (40) | 2.49 (63) | 2.69 (68) | 1.67 (42) | 1.66 (42) | 1.55 (39) | 1.64 (42) | 1.30 (33) | 0.67 (17) | 0.67 (17) | 17.51 (445) |
| Source: PRISM Climate Group[25] | |||||||||||||
Superior has 788.2 acres (319.0 ha) of parks and open space, which is about 31% of its total land area. This includes owned natural space, natural space under conservation easements, and developed open space. Recreational trails (on-road, hard, and soft) extend for 29.75 mi (47.88 km). Recreational amenities include 13 playgrounds, 6 pickleball courts, 4 tennis courts, 3 multipurpose fields, 3 baseball/softball fields, 2 outdoor pools, 3 basketball courts, 1 skate park, 1 disc golf course, and 2 dog parks.[26]
TheSuperior Community Center serves as a public venue for diverse uses.
| Census | Pop. | Note | %± |
|---|---|---|---|
| 1910 | 349 | — | |
| 1920 | 233 | −33.2% | |
| 1930 | 160 | −31.3% | |
| 1940 | 205 | 28.1% | |
| 1950 | 134 | −34.6% | |
| 1960 | 173 | 29.1% | |
| 1970 | 171 | −1.2% | |
| 1980 | 208 | 21.6% | |
| 1990 | 255 | 22.6% | |
| 2000 | 9,011 | 3,433.7% | |
| 2010 | 12,483 | 38.5% | |
| 2020 | 13,094 | 4.9% | |
| 2023 (est.) | 13,361 | [27] | 2.0% |
As of the 2023 American Community Survey, there were 13,136 people and 4,692 households in Superior.[28] Additional demographic information is available from theUS Census profile of Superior andUS Census Quick Facts about Superior. Data here are from the 2020 census[29] and 2023American Community Survey (ACS) 5-year estimates.
Age distribution estimates from 2023 showed 5.3% of the population under age 5, 26.5% under age 18, 7.4% from 18 to 24, 29.6% from 25 to 44, 27.5% from 45 to 64, and 9.1% 65 or older. There were approximately 1.05 males per female, and the median age was 38.1 years.[30]
Theracial makeup of the town, considering races alone or in combination with one or more other races, was 80.3%White, 19.4%Asian, 8.1%Hispanic orLatino, and 4.7% some otherrace, with less than 1% in any other category. A language other than English was spoken at home by 20.9% of the population.
Family and household characteristics included 63.2%married-couple families, 17.6% family households with a male householder and no spouse present, and 14.1% family households with a female householder and no spouse present. The average household size was 2.80 and the average family size was 3.22.
Housing characteristics estimates from the 2020 Census indicated thepopulation density was 3,332 inhabitants per square mile (1,286/km2). Of the 5,025housing units reported in the 2020 Decennial Census, 61.7% were owner-occupied. The median value of owner-occupied housing units reported in the 2023 American Community Survey 5-year estimate was $795,500. The median gross rent for the same period was $2,355.
Median income levels are high. Themedian income for a household in 2023 (in 2023 inflation-adjusted dollars), according to 2023 American Community Survey 5-Year Estimates, was $157,909 +/- $11,968, compared to $92,911 for Colorado. The median income for families was $168,636. The employment rate was 72.2%. About 2.9% of the population were living below thepoverty line, and 4.1% were withouthealth care coverage.[31]
Educational levels are also high. Characteristics of residents 25 years and over in 2023 were that 98.8% were high school graduates or higher, 77.1% held a bachelor's degree or higher (which compares with 46.4% for Colorado), and 37.4% held a graduate or professional degree.
Superior’s diverse businesses as of 2025 include national chain retailers such as Costco, Petsmart, Safeway, Target, TJ Maxx, Ulta, and Whole Foods, a Tesla service center, and diverse independent retailers, restaurants, service providers, and offices.[32] As of 2025, development was underway on a mixed-use retail/residential development called Downtown Superior.[33] TheSuperior Chamber of Commerce supports businesses of all types.
Superior is part of theBoulder Valley School District (BVSD) and is home to two public schools:Superior Elementary andEldorado PK-8. The home public high school isMonarch High School in neighboring Louisville. The school district's open enrollment policy also allows students to attend any other BVSD public school as long as space is available.[34] Nearby institutions of higher education include theUniversity of Colorado at Boulder,Naropa University in Boulder, andFront Range Community College campuses in Longmont and Westminster.
Sections of the 1985 movieAmerican Flyers were filmed in Superior.
Superior has asister city, as designated bySister Cities International:
Khandbari,Koshi Province, Nepal[35]Municipalities and communities ofBoulder County, Colorado,United States | ||
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| Unincorporated communities | ||
| Ghost town | ||
| Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
Municipalities and communities ofJefferson County, Colorado,United States | ||
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| Cities |  | |
| Towns | ||
| CDPs | ||
| Unincorporated communities | ||
| Ghost towns | ||
| Footnotes | ‡This populated place also has portions in an adjacent county or counties | |
| International | |
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| National | |
