Cities and Towns in Douglas County, Colorado
Founded on 1861-11-01, Douglas County is one of 64 counties in the state of Colorado. Historically, Douglas County was formed from Created as one of the 17 original counties of the Territory of Colorado. The city of Castle Rock is the county seat. With FIPS code of 35, Douglas County has a population of 368,990 and area of 842.30 square miles (2,182 km²).
List of all cities in Douglas County, CO alphabetically
| City/Town | Postal Code | Area Code |
| Castle Rock, CO | 80104 | 303/720 |
| 80108 | 303/720 | |
| 80109 | 303/720 | |
| Deckers, CO | 80135 | 303/720 |
| Franktown, CO | 80116 | 303/720 |
| Highlands Ranch, CO | 80126 | 303/720 |
| 80129 | 303/720 | |
| 80130 | 303/720 | |
| 80163 | 303/720 | |
| Larkspur, CO | 80118 | 303/720 |
| Littleton, CO | 80124 | 303/720 |
| 80125 | 303/720 | |
| 80126 | 303/720 | |
| 80129 | 303/720 | |
| 80130 | 303/720 | |
| 80163 | 303/720 | |
| Lone Tree, CO | 80124 | 303/720 |
| Louviers, CO | 80131 | 303/720 |
| Parker, CO | 80134 | 303/720 |
| 80138 | 303/720 | |
| Sedalia, CO | 80135 | 303/720 |
Major Cities and Towns in Douglas County, Colorado
Castle Rock
Area, Population, Zip Codes, and Coordinates
- Area: 35.5 square miles
- Population: Approximately 75,000 (2023 estimate)
- Zip Codes: 80104, 80108, 80109
- Latitude and Longitude: 39.3722° N, 104.8561° W
Location and History
Castle Rock, the county seat of Douglas County, is located midway between Denver and Colorado Springs along Interstate 25. The town was named after the prominent, castle-shaped butte that stands above the town. Founded in 1874 during the Colorado Silver Boom, Castle Rock originally served as a supply center for nearby mining communities. Over the years, it evolved from a small, rural town into a rapidly growing suburb due to its strategic location along the Front Range Urban Corridor. Castle Rock is known for its blend of small-town charm and modern amenities, offering a high quality of life with extensive parks, trails, and open spaces. The town’s historic downtown, with its preserved buildings and local shops, reflects its rich history.
Major Schools and Landmarks
Castle Rock is served by the Douglas County School District, with Castle View High School and Douglas County High School being the primary educational institutions. Major landmarks include the Castle Rock itself, which offers hiking trails and panoramic views of the surrounding area, and the Outlets at Castle Rock, a popular shopping destination. The town is also home to Philip S. Miller Park, which features an adventure playground, zip lines, and a well-maintained trail system. The Castle Rock Historical Society and Museum offers insights into the town’s history, while the annual Starlighting event in November is a cherished local tradition that marks the beginning of the holiday season.
Highlands Ranch
Area, Population, Zip Codes, and Coordinates
- Area: 24.0 square miles
- Population: Approximately 105,000 (2023 estimate)
- Zip Codes: 80126, 80129, 80130
- Latitude and Longitude: 39.5539° N, 104.9694° W
Location and History
Highlands Ranch is a large, master-planned community located just south of Denver. The area that is now Highlands Ranch was originally part of a vast cattle ranch established in the late 19th century. The development of Highlands Ranch as a residential community began in the early 1980s, and it quickly grew into one of the most popular suburban areas in the Denver metropolitan region. Known for its family-friendly neighborhoods, excellent schools, and extensive recreational facilities, Highlands Ranch offers a high quality of life with easy access to both urban amenities and the natural beauty of the Rocky Mountains. The community is organized into several distinct neighborhoods, each with its own parks, schools, and shopping areas.
Major Schools and Landmarks
Highlands Ranch is served by the Douglas County School District, with notable schools such as Highlands Ranch High School and Mountain Vista High School. Significant landmarks include the Highlands Ranch Mansion, a historic estate that serves as a community event venue and offers a glimpse into the area’s ranching past. The community also features the Highlands Ranch Recreation Centers, which provide residents with access to fitness facilities, pools, and sports courts. The nearby Backcountry Wilderness Area offers over 8,000 acres of open space with trails for hiking, biking, and horseback riding, making it a key attraction for outdoor enthusiasts. Highlands Ranch’s central location and well-planned infrastructure make it a desirable place to live and work.
Parker
Area, Population, Zip Codes, and Coordinates
- Area: 22.3 square miles
- Population: Approximately 60,000 (2023 estimate)
- Zip Codes: 80134, 80138
- Latitude and Longitude: 39.5186° N, 104.7614° W
Location and History
Parker is a rapidly growing town located in the northeastern part of Douglas County, about 20 miles southeast of Denver. The town was founded in 1864 as a stagecoach stop along the Smoky Hill Trail and was named after James S. Parker, who established a ranch and later a post office in the area. Parker remained a small, rural community until the late 20th century, when it began to grow rapidly as a suburban residential area for those working in Denver and the surrounding region. Today, Parker is known for its blend of suburban convenience and small-town charm, with a strong sense of community and a commitment to preserving its historical roots.
Major Schools and Landmarks
Parker is served by the Douglas County School District, with Ponderosa High School and Chaparral High School being the primary educational institutions. Key landmarks in Parker include the historic Mainstreet, which features local shops, restaurants, and the Parker Arts, Culture & Events (PACE) Center, a hub for cultural events and performances. The town is also home to the Parker Fieldhouse, which offers a wide range of recreational activities, including sports courts, a climbing wall, and an indoor track. The annual Parker Days Festival, held each summer, is one of the largest events in the area, celebrating the town’s history and community spirit. With its mix of modern amenities and historical character, Parker is a vibrant and welcoming place to live.
Lone Tree
Area, Population, Zip Codes, and Coordinates
- Area: 9.6 square miles
- Population: Approximately 15,000 (2023 estimate)
- Zip Codes: 80124
- Latitude and Longitude: 39.5372° N, 104.8972° W
Location and History
Lone Tree is a small, affluent city located at the northern edge of Douglas County, near the junction of Interstate 25 and C-470. The area was originally part of a large ranching region, but its transformation into a suburban community began in the 1980s and 1990s. Lone Tree officially became a city in 1995 and has since grown into a thriving residential and commercial hub, known for its high-end amenities and proximity to Denver. The city is home to several corporate headquarters and is a key economic center within the Denver metropolitan area. Lone Tree is characterized by its well-planned neighborhoods, modern infrastructure, and commitment to cultural and recreational amenities.
Major Schools and Landmarks
Lone Tree is served by the Douglas County School District, with Lone Tree Elementary School and nearby Highlands Ranch High School being key educational institutions. Significant landmarks in Lone Tree include the Park Meadows Mall, one of the largest shopping centers in Colorado, offering a wide range of retail and dining options. The city is also home to the Lone Tree Arts Center, which hosts a variety of performances, from theater to live music, and serves as a cultural cornerstone for the community. The Bluffs Regional Park offers trails with stunning views of the Front Range and downtown Denver, making it a popular spot for hiking and outdoor recreation. Lone Tree’s blend of urban sophistication and suburban comfort makes it a highly desirable place to live and work.
Larkspur
Area, Population, Zip Codes, and Coordinates
- Area: 1.5 square miles
- Population: Approximately 200 (2023 estimate)
- Zip Codes: 80118
- Latitude and Longitude: 39.2283° N, 104.8878° W
Location and History
Larkspur is a small town located in the southern part of Douglas County, nestled between Castle Rock and Monument. The town was named after the wildflowers that grow abundantly in the area, particularly the larkspur plant. Larkspur was established in the late 19th century and has maintained its small-town character over the years, despite the growth and development in the surrounding region. The town is known for its rural atmosphere, with large open spaces, rolling hills, and a close-knit community. Larkspur is perhaps best known as the home of the Colorado Renaissance Festival, an annual event that attracts visitors from all over the state and beyond.
Major Schools and Landmarks
Larkspur is served by the Douglas County School District, with nearby schools such as Larkspur Elementary School and Castle View High School serving the local population. Major landmarks in Larkspur include the Colorado Renaissance Festival, held each summer, which transforms the town into a bustling medieval village complete with jousting, artisans, and entertainment. The town is also close to the Pike National Forest, offering residents and visitors access to hiking, camping, and outdoor recreation in a beautiful natural setting. Larkspur’s scenic beauty and quiet, rural environment make it a unique and peaceful place to live, with a strong sense of community and connection to the land.
Map of Cities in Douglas County, CO
