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Castle Rock

  •   State: 
    Douglas County
    Castle Rock
      County FIPS: 
    39°22′34″N 104°51′13″W
      Area total: 
    34.290 sq mi (88.811 km²)
      Area land: 
    34.290 sq mi (88.811 km²)
      Area water: 
    0.000 sq mi (0.000 km²)
    6,224 ft (1,897 m)
    1874; Incorporated (town) April 14, 1881
  •   Latitude: 
      Dman name cbsa: 
    Denver-Aurora-Lakewood, CO
    Mountain Standard Time (MST) UTC-7:00; Mountain Daylight Time (MDT) UTC-6:00
      ZIP codes: 

    Castle Rock, Douglas County, Colorado, United States

  •   Population: 
      Population density: 
    2,134 residents per square mile of area (824/km²)
      Household income: 
      Unemployment rate: 
  •   Sales taxes: 
      Income taxes: 

Castle Rock is a home rule town that is the county seat and the most populous municipality of Douglas County, Colorado, United States. The town population was 73,158 at the 2020 United States Census, a 51.68% increase since the 2010 U.S. Census. Castle Rock is named for the prominent, castle-shaped butte near the center of town. The region in and around Castle Rock was originally home to the Arapaho and Cheyenne peoples, who occupied the land between the Arkansas and South Platte Rivers. White settlers were drawn to the area by rumors of gold and by land opened through the Homestead Act of 1862. The discovery of rhyolite stone, not gold, ultimately led to the settlement of Castle Rock in 1874. In 1984, the town's voters approved a charter amendment that authorized the creation of a home-rule charter commission. The original Douglas County courthouse was one of seven buildings in Castle Rock that have been added to the National Register of Historic Places. The other buildings include Castle Rock Depot, Castle Rock Elementary School, First National Bank, Samuel Dyer House, Benjamin Hammer House, and Keystone Hotel. The city's historic county courthouse, which was built in 1889-1890, burned down on March 11, 1978, the result of arson. It has been lit every year since around the same time. After World War II began, the star was left unlit as a symbol of sacrifice in support of the war effort. On August 14, 1945, shortly after V-J Day, theStar was modified into a V-for-victory symbol.


Castle Rock is the primary city name, but also Castle Pines are acceptable city names or spellings. Castle Rock was founded in 1874 when the eastern Douglas County border was redrawn to its present location. The town's historic county courthouse, which was built in 1889-1890, burned down on March 11, 1978, the result of arson. Castle Rock's municipal government experienced significant financial difficulties during the early 1980s. In 1984, the town's voters approved a charter amendment that authorized the creation of a home-rule charter commission. The original Douglas County courthouse was one of seven buildings in Castle Rock that have been added to the National Register of Historic Places. The U.S. Supreme Court decided in 2005 that a municipality cannot be held liable under a federal civil-rights statute for failing to enforce civil restraining orders. The case had arisen from a 1999 murder of three young girls by their father outside the Castle Rock Police Department building. The children were abducted by their dad, in violation of a restraining order that had been obtained by their mother, within several hours of being killed. The mother had asked Castle Rock police to enforce the restraining order, but the police officers declined to do so, refusing even to contact the Denver Police Department after the father had taken the children to an amusement park in that city. On December 7, 1945, the star was lit for the holiday season, and it has been lit every year since around the same time. The star was left unlit as a symbol of sacrifice in support of the war effort after World War II began, and was modified into a V-for-victory symbol on August 14, 1945.


Castle Rock is located at 39°2220N 104°5122W (39.372212, 104.856090) at an elevation of 6,224 feet (1,897 m) The town is in central Colorado at the junction of Interstate 25 and State Highway 86, 28 mi (45 km) south of downtown Denver and 37 mi (60 km) north of Colorado Springs. Castle Rock borders three communities, all to its north; from west to east, they are Castle Pines Village, the city of CastlePines, and The Pinery. Other nearby communities include Franktown to the east, Larkspur to the south, Perry Park to the southwest, and Sedalia to the northwest. At the 2020 United States Census, the town had a total area of 21,946 acres (88.811 km²), all of it land. The town has a semiarid climate (Köppen BSk) with cold, dry, snowy winters, and hot, wetter summers. January is the coldest month, July the hottest, and August the month with the most precipitation. Local wildlife includes the American badger, American black bear, bobcat, coyote, Colorado chipmunk, crow, garter snakes, gray fox, mountain cottontail rabbit, mountain lion, mule deer, pocket gopher, porcupine, skunk, and tadpoles. Statewide, Colorado has experienced an average temperature increase of about 2.5 °F (1.4 °C) over the past half-century.


As of the 2010 census, there were 48,231 people, 16,688 households, and 12,974 families residing in the town. Castle Rock is the 16th most populous municipality in Colorado and is the center of the burgeoning urbanization of the county. Hispanics and Latinos of any race were 10.0% of the population. The town's median income was $85,461, and the median income for a family was $95,973. The per capita income for the town was $34,089. About 8.2% of residents were below the poverty line, including 6.3% of those under age 18 and 6.2%, of those age 65 or over. The population was spread out, with 32.4% under the age of 18, 5.8% from 18 to 24, 33.0%. from 25 to 44, 22.6% from 45 to 64, and 6,2% who were 65 years of age or older. The median age was 33.8 years. For every 100 females, there are 98.5 males. For each 100 females age 18 or over, there is 95.5 Males. The racial makeup of the town is 90.7% White, 1. 7% Asian,1.1% African American, 0.6%. American Indian, 2.9% from other races, and 2.8%. The population density was 1,526.3 inhabitants per square mile (589.3/km²).


Castle Rock has relatively little land zoned for industrial or light industrial use. The average one-way commute time for a Castle Rock resident is about 29 minutes, longer than the U.S. average. About 80% of Castle Rock residents commute out of town to work. The three industries employing the largest proportion of the working civilian labor force were educational services, health care, and social assistance. As of mid-2019, the median home value in the town was $427,537. The median gross monthly rent for an apartment was about $1,461. The town's housing base continues to grow. About 1,400 permits to build new homes were issued in 2018. The cost of living index for the town is 137.2. Compared to a U.S. average of 100, the town's cost ofliving index is above average. The city is located between Denver and its inner suburbs and Colorado Springs. It is about 20 miles to northern Colorado Springs or the Denver Technological Center, better known as "The Denver Tech Center" (DTC), which is an 18-mile drive north on I-25, with Downtown Denver roughly 30 miles north, and Denver International Airport about 45 miles north. In 2011, 78.2% of the population over the age of 16 was in the labor force, 0.4% in the armed forces, and 77.7% were in the civilianLabor force, with 72.6% employed and 5.1% unemployed. The employed civilian labor Force was 48.0% in management, business, science, and arts.

Government and politics

Castle Rock is a home rule municipality with a councilmanager form of government. The council sets policy for the town, adopts ordinances, approves the town budget, and makes major land-use decisions. Castle Rock is the county seat of Douglas County, a Republican stronghold in Colorado. As of 2013, Castle Rock lies within Colorado's 4th U.S. Congressional District. The town also provides development services, golf, water, and sewer services to residents through self-supporting enterprise funds. The average annual municipal property tax bill of a Castle Rock resident is $40.66. That is in addition to property taxes assessed by Douglas County and other entities. The county courthouse, the Douglas County Justice Center, is north of downtown, and most departments of the county government base their operations in the town. The mayor presides over council meetings and casts one vote, like other councilmembers. The city is in the 4th district of the Colorado Senate and the 45th district in the Colorado House of Representatives. It is the administrative center ofDouglas County, the home of the University of Colorado at Colorado Springs and the Colorado Springs School of Mines. It has a population of about 2,000 people, the majority of whom live in or near the town's downtown area. It also is the home to the Colorado College of Applied Sciences, which has a campus in the heart of the town and offers a variety of programs for students and faculty. The school is located on the edge of Castle Rock.


Douglas County School District is based in Castle Rock and operates 18 public schools in the town. School board elections in Douglas County are held in odd-numbered years. The Douglas County Libraries public library system is co-located with the local branch library, the Philip S. Miller Library, south of downtown. The Miller Library includes the Douglas County History Research Center and offers several educational and recreational programs to the public. Also, it includes Little Free Librarys places scattered throughout, such as in festival park. The community has experienced a spirited debate between supporters of significant change in the management of local schools and those who oppose such changes or believe they should advance at a slower pace. There are three private primary schools in CastleRock. The town has a reputation for being a good place to live and to raise a family. It has a history of being a hotbed of crime and violence. It also has a good reputation for having a good sense of humor and a sense of the humor about the world around it. It is the home of the U.S. Army National Guard, which has been there since the early 1900s. It was founded in 1864 and is still there to this day, along with a number of other military installations in the region. The U.N. has a presence in the area, including a base in Fort Collins, Colorado, which was established in the early 20th century. There is also a museum in downtown Castle Rock, which dates back to the 18th century and is called the Museum of American History.


Interstate 25 and U.S. Route 87 run concurrently north-south through Castle Rock. BNSF Railway and Union Pacific Railroad each have a freight rail line that runs through the town. Castle Rock Adventist Hospital, a full-service hospital, opened on August 1, 2013. The Intermountain Rural Electric Association, based in nearby Sedalia, provides electric power. Black Hills Energy provides natural gas service. Waste Management and other businesses provide trash removal. The town government's Utilities Department oversees water provision, distribution, and infrastructure maintenance. As of July 2019, Castle Rock, Denver, and Pitkin County are the first three Colorado municipal or county governments to adopt a state regulation governing greywater reuse. By 2020, about one-third of all water used in Castle Rock is expected to be from a reusable source. Town aims to achieve a goal of reliance upon renewable water resources for 75% of municipal needs by 2050. Town residents are expected to begin treating sink, tap, and toilet water to drinkable water quality standards so that it can be reused in the future. Town does not participate in the Denver metropolitan area's Regional Transportation District (RTD) As a result, neither bus nor light rail service to Denver or any of its other suburbs is available from Castle Rock or any other part of the city. For local transportation within the town, the town government sponsors a voucher program for reduced-fare taxi service. This service is available to town residents who are disabled or who do not have access to a vehicle. The Castle Rock Senior Center offers a shuttle service for resident senior citizens.

Parks and recreation

Castle Rock's open space and parks comprise 27% of the town's total land area (5,415 acres (21.91 km²) of parks and open space) There are nearly 75 miles (121 km) of soft-surface and paved trails. The town has more than 20,000 acres (81.84 km² of land) of public open space. It is home to more than 1,000 miles of paved trails and more than 75 miles of soft surface and paved trail. The city has a population of about 2,000 people. The population of Castle Rock was 2,100 in the year 2000, and is expected to grow to 3,000 in the future. It has an estimated population of 4,000. The current population is 2,200. The community has a history of being active in sports and recreation. It also has a reputation for being a good place to live and raise a family. It was founded in 1858. The first town to be founded in the area was Castle Rock, New Hampshire, in 1859. It became the first U.S. city to be incorporated in 1881. It's the largest city in the state, with more than 2,500 acres (91.84km²) and nearly 1,200 acres (1,200km) of land. It had its first public library in 1883. It opened its doors in 1885. It received its first post-secondary school in 1887.

Air Quality, Water Quality, Superfund Sites & UV Index

The Air Quality index is in Castle Rock, Douglas County, Colorado = 35.1. These Air Quality index is based on annual reports from the EPA. Higher values are better (100=best). The number of ozone alert days is used as an indicator of air quality, as are the amounts of seven pollutants including particulates, carbon monoxide, sulfur dioxide, lead, and volatile organic chemicals. The Water Quality Index is 101. A measure of the quality of an area’s water supply as rated by the EPA. Higher values are better (100=best). The EPA has a complex method of measuring the watershed quality, using 15 indicators such as pollutants, turbidity, sediments, and toxic discharges. The Superfund Sites Index is 91. Higher is better (100=best). Based upon the number and impact of EPA Superfund pollution sites in the county, including spending on the cleanup efforts. The UV Index in Castle Rock = 4.8 and is a measure of an area's exposure to the sun's ultraviolet rays. This is most often a combination of sunny weather, altitude, and latitude. The UV Index has been defined by the WHO ( and is uniform worldwide.


The most recent city population of 73,158 individuals with a median age of 32.5 age the population grows by 115.50% in Castle Rock, Douglas County, Colorado population since 2000 and are distributed over a density of 2,134 residents per square mile of area (824/km²). There are average 2.83 people per household in the 15,362 households with an average household income of $77,785 a year. The unemployment rate in Alabama is 5.50% of the available work force and has dropped -4.90% over the most recent 12-month period and the projected change in job supply over the next decade based on migration patterns, economic growth, and other factors will increase by 24.70%. The number of physicians in Castle Rock per 100,000 population = 162.7.


The annual rainfall in Castle Rock = 17.1 inches and the annual snowfall = 58.9 inches. The annual number of days with measurable precipitation (over .01 inch) = 66. The average number of days per year that are predominantly sunny = 243. 86 degrees Fahrenheit is the average daily high temperature for the month of July and 13.3 degrees Fahrenheit is the average daily low temperature for the month of January. The Comfort Index (higher=better) is 58, where higher values mean a more pleasant climate. The Comfort Index measure recognizes that humidity by itself isn't the problem. (Have you noticed nobody ever complains about the weather being 'cold and humid?) It's in the summertime that we notice the humidity the most, when it's hot and muggy. Our Comfort Index uses a combination of afternoon summer temperature and humidity to closely predict the effect that the humidity will have on people.

Median Home Cost

The percentage of housing units in Castle Rock, Douglas County, Colorado which are owned by the occupant = 74.97%. A housing unit is a house, apartment, mobile home, or room occupied as separate living quarters. The average age of homes = 8 years with median home cost = $258,090 and home appreciation of -6.54%. This is the value of the years most recent home sales data. Its important to note that this is not the average (or arithmetic mean). The median home price is the middle value when you arrange all the sales prices of homes from lowest to highest. This is a better indicator than the average, because the median is not changed as much by a few unusually high or low values. The property tax rate of $8.28 shown here is the rate per $1,000 of home value. If for simplification for example the tax rate is $14.00 and the home value is $250,000, the property tax would be $14.00 x ($250,000/1000), or $3500. This is the 'effective' tax rate.


The local school district spends $4,503 per student. There are 17.8 students for each teacher in the school, 533 students for each Librarian and 634 students for each Counselor. 8.47% of the area’s population over the age of 25 with an Associate Degree or other 2-year college degree, 30.31% with a master’s degree, Ph.D. or other advanced college degree and 12.15% with high school diplomas or high school equivalency degrees (GEDs).

  • Castle Rock's population in Douglas County, Colorado of 1,172 residents in 1900 has increased 62,42-fold to 73,158 residents after 120 years, according to the official 2020 census.

    Approximately 49.72% female residents and 50.28% male residents live in Castle Rock, Douglas County, Colorado.

    As of 2020 in Castle Rock, Douglas County, Colorado are married and the remaining 29.47% are single population.

  • 32.6 minutes is the average time that residents in Castle Rock require for a one-way commute to work. A long commute can have different effects on health. A Gallup poll in the US found that in terms of mental health, long haul commuters are up to 12 percent more likely to experience worry, and ten percent less likely to feel well rested. The Gallup poll also found that of people who commute 61­–90 minutes each day, a whopping one third complained of neck and back pain, compared to less than a quarter of people who only spend ten minutes getting to work.

    80.99% of the working population which commute to work alone in their car, 10.14% of the working population which commutes to work in a carpool, 0.51% of the population that commutes using mass transit, including bus, light rail, subway, and ferry. 6.55% of the population that has their home as their principal place of work.

  • Of the total residential buildings in Castle Rock, Douglas County, Colorado, 74.97% are owner-occupied homes, another 22.48% are rented apartments, and the remaining 2.56% are vacant.

  • The 55.35% of the population in Castle Rock, Douglas County, Colorado who identify themselves as belonging to a religion are distributed among the following most diverse religions.

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