THE ARAPAHOE COUNTY LAND BRIEF
Land in the
Flat to Rolling Plains setting.
Arapahoe County has 797.9 square miles of land in Colorado. 5 mapped landscape regions meet across Arapahoe County: Flat to Rolling Plains, Moderate Relief Plains, Piedmont Plains and Tablelands, among others.
Broad, comparatively smooth plains distinguish the High Plains from neighboring broken terrain. The natural grassland setting is drier and higher than the Central Great Plains to the east.
Regional context: High Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Arapahoe County intersects 5 mapped regional units. The largest mapped shares are:
- Flat to Rolling Plains38.8%
- Moderate Relief Plains35.9%
- Piedmont Plains and Tablelands20.3%
- Foothill Grasslands3.9%
- Front Range Fans1.2%
Southwestern Tablelands in Arapahoe County
Canyons, mesas, badlands and river breaks border the High Plains. This more dissected country includes grassland and shrub-covered slopes, with sharper terrain changes than the neighboring plains.
Read the regional source ↗Finding your parcel within Arapahoe County
The atlas lists 26 cities, towns, townships, and Census communities associated with Arapahoe County, including Aurora, Centennial, Watkins. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Arapahoe County by land and water
The Census records 7.64 square miles of water within Arapahoe County, or 0.9% of its total area. That share is close to Arapahoe County’s 0.9%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Arapahoe County has 36.8 times the land area of nearby Comanche Creek CDP (21.7 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Adams County, Denver County, Douglas County, Elbert County, Jefferson County, Lincoln County, Washington County within Colorado. A tract near one of these lines should be matched to the county identifier on its own records.

