THE PUTNAM COUNTY LAND BRIEF
Land in the
Glaciated Reading Prong/Hudson Highlands setting.
Putnam County has 230.3 square miles of land in New York. 4 mapped landscape regions meet across Putnam County: Glaciated Reading Prong/Hudson Highlands, Southern New England Coastal Plains and Hills, Berkshire Transition, among others.
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.
Regional context: Northeastern Highlands ↗ · Regional mapping across the county footprint
Where the landscape changes
Putnam County intersects 4 mapped regional units. The largest mapped shares are:
- Glaciated Reading Prong/Hudson Highlands74.8%
- Southern New England Coastal Plains and Hills17.4%
- Berkshire Transition3.9%
- Western New England Marble Valleys3.8%
Northeastern Coastal Zone in Putnam County
Irregular plains and low hills form a coastal transition with glacial lakes and oak-pine woodland. This northeastern landscape is gentler than the mountainous country farther inland.
Read the regional source ↗Finding your parcel within Putnam County
The atlas lists 16 cities, towns, townships, and Census communities associated with Putnam County, including Philipstown, Putnam Valley, Kent. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Putnam County by land and water
The Census records 15.9 square miles of water within Putnam County, or 6.5% of its total area. That share is close to Putnam County’s 6.5%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Putnam County has 5.7 times the land area of nearby Kent town (40.5 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Dutchess County, Orange County, Rockland County, Westchester County within New York. A tract near one of these lines should be matched to the county identifier on its own records.

