THE ADAMS COUNTY LAND BRIEF
Land in the
Flat to Rolling Plains setting.
Adams County has 1,166.8 square miles of land in Colorado. 4 mapped landscape regions meet across Adams County: Flat to Rolling Plains, Piedmont Plains and Tablelands, Moderate Relief Plains, 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
Adams County intersects 4 mapped regional units. The largest mapped shares are:
- Flat to Rolling Plains76.1%
- Piedmont Plains and Tablelands13.5%
- Moderate Relief Plains9.2%
- Rolling Sand Plains1.1%
Southwestern Tablelands in Adams 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 Adams County
The atlas lists 20 cities, towns, townships, and Census communities associated with Adams County, including Aurora, Arvada, Commerce City. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Adams County by land and water
The Census records 16.8 square miles of water within Adams County, or 1.4% of its total area. That share is close to Adams County’s 1.4%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Adams County has 163.5 times the land area of nearby Bennett town (7.14 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Arapahoe County, Broomfield County, Denver County, Jefferson County, Morgan County, Washington County, Weld County within Colorado. A tract near one of these lines should be matched to the county identifier on its own records.

