Douglas County stretches from the Denver suburbs around Highlands Ranch, Lone Tree, and Parker into much higher foothill and mountain terrain along the west and southwest. Castle Rock is the easiest central reference, with I-25 connecting the northern communities to Castle Pines and Larkspur farther south. The supplied county, city, water, and elevation maps show how this growing urban corridor relates to the South Platte River, Plum Creek, Cherry Creek, and a large change in elevation. High-resolution JPG originals of the same maps are available below in one downloadable ZIP archive.
The road network is organized around I-25, which runs north-south through Lone Tree, the Castle Rock area, and Larkspur. CO 86 heads east from Castle Rock toward Franktown, while CO 83 provides another strong north-south reference on the eastern side. CO 105 reaches into the higher western terrain, and CO 67 is labeled near the southwestern boundary. These roads help explain why most major communities are concentrated in the northern and central parts of the county.
Water and terrain form a second geographic framework. South Platte River follows the western side, while Plum Creek, West Plum Creek, and East Plum Creek drain central valleys. Cherry Creek and its branches cross the east, with Willow Creek and Jackson Creek adding more local drainage corridors. Barney Baird Reservoir is labeled in the eastern half. The elevation map ranges from about 1,636 to 2,982 meters with a mean near 2,088 meters, showing much higher ground in the west and southwest.
Table of Contents
Castle Rock between the northern suburbs and the southern foothills
Castle Rock is the strongest settlement anchor on the maps because it sits near the center of the county’s developed north-south corridor. Castle Pines and Lone Tree lie farther north, Highlands Ranch spreads across the northwest, and Parker occupies the northeastern side. Larkspur is separated to the south along I-25, where the county becomes less urban and the surrounding terrain begins to dominate the map.
The western side is much more rugged than the urbanized north and east. Roxborough Park and Sterling Ranch provide recognizable place names near the foothills, but farther west the road network thins and stream valleys become more prominent. Perry Park marks another transition between the central corridor and the higher southwestern terrain.
Douglas County’s official parks and open-space planning material identifies Cherry Creek, Plum Creek, the South Platte corridor, and western natural areas as important parts of the county’s recreation and open-space network. The maps on this page are simpler county-wide references, but they make the same broad relationship visible: dense northern communities give way to increasingly rugged land toward the west and southwest.
I-25, CO 86, and CO 83 on the county reference map
I-25 is the main transportation spine on the county reference map. It runs from the Lone Tree area through Castle Rock and continues south toward Larkspur. CO 86 extends east from Castle Rock toward Franktown, and CO 83 serves the eastern side near Parker and The Pinery. Together these routes provide a simple framework for locating most of the major communities.
CO 105 reaches into the western foothills, while CO 67 is shown near the southwest. Castle Pines and Castle Pines Village sit between the northern communities and Castle Rock, and the map also labels The Pinery, Franktown, Perry Park, Roxborough Park, and Sterling Ranch. AdventHealth Hospital Castle and Castle Rock Police Department provide additional landmarks in the Castle Rock area.
This map is intended for county orientation rather than live navigation or parcel research. It does not show every private road, seasonal closure, construction condition, or ownership boundary. Current travel information should be checked separately, and legal property questions require authoritative county records or GIS resources.
Five ranked cities from Lone Tree and Parker to Larkspur
The city map highlights Castle Rock, Parker, Lone Tree, Castle Pines, and Larkspur. Castle Rock sits near the middle of the group, Parker is farther northeast, and Lone Tree lies at the northern edge of the county’s main urban corridor. Castle Pines fills the space between Lone Tree and Castle Rock, while Larkspur is clearly separated to the south.
The CITY INDEX prints a rank and number beside each place. Those values should be treated as part of the map’s internal city-ranking display rather than assumed to be the latest official population counts. Current population estimates and demographic trends should be checked through a recent U.S. Census Bureau release.
Jefferson, El Paso, Teller, Park, Clear Creek, Elbert, and Arapahoe counties are labeled around the outside of the map. This regional context makes the county’s position south of Denver easier to understand. The city view is best for quick settlement comparison, while the reference map adds Highlands Ranch, Roxborough Park, Franktown, and the main road network.
South Platte River, Plum Creek, and Cherry Creek drainages
The terrain-and-water map is organized around three broad drainage areas. South Platte River follows the western side of the county through rugged terrain. Plum Creek and West Plum Creek occupy central valleys, while East Plum Creek provides a major drainage reference closer to the Castle Rock corridor. These waterways help explain how the higher west connects to lower central areas.
Farther east, Cherry Creek, West Cherry Creek, and East Cherry Creek run through rolling terrain, and Willow Creek forms another long drainage corridor. Jackson Creek and Bear Creek appear in the western high country. Arapahoe Canal is labeled near the north, showing that the mapped water network includes an engineered channel as well as natural streams and rivers.
Douglas County’s official parks and open-space planning documents include Cherry Creek, Plum Creek, the South Platte corridor, and other natural connections in county-wide recreation and conservation planning. The map on this page is a simpler location reference and should not be used for real-time streamflow, flood risk, water quality, fishing, or reservoir-access decisions.
Elevation rises from eastern hills to high western terrain
The elevation map shows a large change across Douglas County. Its printed range extends from about 1,636 to 2,982 meters, with a mean near 2,088 meters. Lower green terrain dominates much of the northeast and east, while yellow, tan, and brown colors spread across the west and become especially strong in the southwest.
The South Platte River side contains steep valleys and high ridges close together, and the southwest holds some of the darkest high-elevation colors on the map. Castle Rock occupies an intermediate zone rather than the lowest or highest terrain. East of the I-25 corridor, the land becomes lower overall but still contains long rolling ridges and shallow creek valleys.
The colored elevation surface is intended for broad county comparison, not survey work. It should not be used to assign an exact elevation to a home, road project, park facility, development parcel, or engineering site. Detailed work should rely on source elevation data from the USGS 3D Elevation Program or professional surveying.
Choosing a Douglas County map and downloading the JPG originals
Use the county reference map when you need Castle Rock, Parker, Lone Tree, Highlands Ranch, I-25, CO 86, CO 83, and the western foothill roads in one view. The city map is cleaner when the goal is to compare the five ranked major cities without the extra neighborhood and road detail.
The terrain-and-water map is the best choice for South Platte River, Plum Creek, Cherry Creek, Willow Creek, and Barney Baird Reservoir. The elevation map is more useful when the subject is the lower eastern side or the rapid rise into western and southwestern high country. Matching the map to the task makes this varied county much easier to understand.
The WebP images in the article are reduced previews for faster page loading. The download archive contains the corresponding original JPG files at 3638 × 2572 pixels each, making them better suited to printing, classroom use, reports, presentations, and personal annotation.
Frequently Asked Questions
Which map is best for comparing Castle Rock, Parker, and Lone Tree?
Use the county reference map when roads and surrounding places matter. The city map is simpler for comparing Castle Rock, Parker, Lone Tree, Castle Pines, and Larkspur. Castle Rock is the central anchor, Parker is northeast, and Lone Tree is farther north.
Where can I see South Platte River and Plum Creek most clearly?
The terrain-and-water map is the best choice. It labels South Platte River, Plum Creek, West Plum Creek, East Plum Creek, Cherry Creek and its branches, Willow Creek, Jackson Creek, and Barney Baird Reservoir.
Can the 1,636–2,982 meter elevation range be used for survey work?
No. The range is useful for county-wide terrain comparison, but the map is not survey-grade. Exact elevation work for construction, roads, parcels, or engineering should use source USGS elevation data or professional surveying.
Map File Information
The ZIP archive contains high-resolution JPG originals of the Douglas County reference, city, terrain-and-water, and elevation maps.
- Printable Size: 3638 × 2572 pixels each
- File Type: ZIP archive containing 4 JPG files
Related Maps
Sources and references
Local government, road, park, and open-space information is available from the official Douglas County website. The county’s Parks, Trails and Open Space Master Plan provides additional context for major natural and trail corridors.
Additional data references include U.S. Census Bureau TIGER/Line Shapefiles for administrative boundaries, USGS National Hydrography for water features, and the USGS 3D Elevation Program for elevation data.
Green Map creates custom-edited map images using open geographic data sources such as geoBoundaries, Natural Earth, OpenStreetMap, and government open data.
These maps are edited visual materials, not raw data files, and are provided for education, documents, presentations, and graphic reference.
