THE DELAWARE COUNTY LAND BRIEF
Land in the
Catskills Transition setting.
Delaware County has 1,442.6 square miles of land in New York. 3 mapped landscape regions meet across Delaware County: Catskills Transition, Glaciated Low Allegheny Plateau, Catskill High Peaks.
Rolling hills, broad valleys and low mountains are mantled by glacial deposits. Sandstone, shale and siltstone underlie a mix of open land and woodland across the northern plateau.
Regional context: Northern Allegheny Plateau ↗ · Regional mapping across the county footprint
Where the landscape changes
Delaware County intersects 3 mapped regional units. The largest mapped shares are:
- Catskills Transition50.6%
- Glaciated Low Allegheny Plateau43.2%
- Catskill High Peaks6.2%
Northeastern Highlands in Delaware County
Forested hills and mountains span northern New England, the Adirondacks and higher Catskills. Glacial lakes and steep streams accompany a transition between northern hardwood and spruce-fir forests.
Read the regional source ↗Finding your parcel within Delaware County
The atlas lists 33 cities, towns, townships, and Census communities associated with Delaware County, including Hancock, Colchester, Andes. 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 24.8 square miles of water within Delaware County, or 1.7% of its total area. That share is close to Delaware County’s 1.7%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Delaware County has 24.1 times the land area of nearby Hamden town (59.9 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Broome County, Chenango County, Greene County, Otsego County, Schoharie County, Sullivan County, Ulster County within New York. A tract near one of these lines should be matched to the county identifier on its own records.

