Douglas County is one of the fastest-growing counties in Colorado, with its population increasing by over 30% between 2010 and 2020.
As of 2024, the estimated population of Douglas County is around 370,000 residents, making it the sixth most populous county in the state.
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The county seat and largest city is Castle Rock, which has a population of over 75,000 people and is one of the fastest-growing municipalities in the Denver metro area.
Douglas County is known for its affluent and highly educated population, with a median household income over $120,000 and more than 50% of adults holding a bachelor's degree or higher.
Despite its rapid growth, Douglas County maintains a relatively low population density, with just over 300 people per square mile, compared to the statewide average of around 50 people per square mile.
The county's population is predominantly White (around 85%), with smaller percentages of Hispanic/Latino (10%), Asian (5%), and Black/African American (2%) residents.
Douglas County has a younger than average population, with a median age of just 37 years old, compared to the Colorado median age of 36.5 years.
The county is home to several master-planned communities, such as Highlands Ranch and Sterling Ranch, which have contributed significantly to its population growth in recent decades.
Douglas County's population is highly mobile, with over 85% of residents having moved to the county from a different state or county within the past 10 years.
The county's population growth has put a strain on its infrastructure, leading to ongoing investments in roads, schools, and other public services to keep up with demand.
Douglas County has a relatively low poverty rate of around 5%, well below the statewide average of 10.3%.
The county's population is projected to continue growing rapidly, with estimates suggesting it could reach over 450,000 residents by 2030.
Douglas County's population is highly educated, with over 50% of adults holding a bachelor's degree or higher, compared to the statewide average of around 40%.
The county is home to several major employers, including Charles Schwab, Lockheed Martin, and Dish Network, which have contributed to its economic growth and population influx.
Douglas County has a relatively low unemployment rate, consistently below the statewide and national averages, reflecting its strong economic performance.
The county's population is heavily concentrated in its eastern and central regions, with the western areas remaining more sparsely populated and rural.
Douglas County's population growth has led to a significant increase in housing development, with the number of housing units in the county increasing by over 25% between 2010 and 2020.
The county's population is highly mobile, with a significant percentage of residents commuting outside of the county for work, particularly to the Denver metropolitan area.
Douglas County has a relatively low crime rate compared to other urban counties in Colorado, contributing to its reputation as a safe and desirable place to live.
The county's population is expected to continue growing at a rapid pace, driven by its strong economy, high quality of life, and desirable location within the Denver metropolitan area.