THE DELAWARE COUNTY LAND BRIEF
Land in the
Clayey High Lime Till Plains setting.
Delaware County has 443.1 square miles of land in Ohio. 3 mapped landscape regions meet across Delaware County: Clayey High Lime Till Plains, Loamy High Lime Till Plains, Low Lime Drift Plain.
Rolling glacial till plains are interrupted by end moraines and areas of older, more dissected deposits. The historical landscape had more tree cover than the Central Corn Belt to the west.
Regional context: Eastern Corn Belt Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Delaware County intersects 3 mapped regional units. The largest mapped shares are:
- Clayey High Lime Till Plains54.4%
- Loamy High Lime Till Plains45%
- Low Lime Drift Plain0.6%
Erie Drift Plain in Delaware County
Low rounded hills, glacial moraines, kettles and wetland areas define the Erie Drift Plain. Its terrain is more varied than nearby flatter farming regions and less rugged than the unglaciated plateaus.
Read the regional source ↗Finding your parcel within Delaware County
The atlas lists 30 cities, towns, townships, and Census communities associated with Delaware County, including Columbus, Scioto, Liberty. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Delaware County by land and water
The Census records 14.2 square miles of water within Delaware County, or 3.1% of its total area. That share is close to Delaware County’s 3.1%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Delaware County has 19.8 times the land area of nearby Berlin township (22.3 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Franklin County, Knox County, Licking County, Marion County, Morrow County, Union County within Ohio. A tract near one of these lines should be matched to the county identifier on its own records.

