THE MONROE COUNTY LAND BRIEF
Land in the
Ontario Lowlands setting.
Monroe County has 657 square miles of land in New York. 2 mapped landscape regions meet across Monroe County: Ontario Lowlands, Erie/Ontario Lake Plain.
Glacially shaped lowlands and irregular plains border the Great Lakes and adjacent hills. The lakes influence regional weather, while local landforms reflect both glacial deposits and former shorelines.
Regional context: Eastern Great Lakes Lowlands ↗ · Regional mapping across the county footprint
Where the landscape changes
Monroe County intersects 2 mapped regional units. The largest mapped shares are:
- Ontario Lowlands62.5%
- Erie/Ontario Lake Plain37.5%
Finding your parcel within Monroe County
The atlas lists 40 cities, towns, townships, and Census communities associated with Monroe County, including Greece, Hamlin, Parma. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Monroe County by land and water
The Census records 709.8 square miles of water within Monroe County, or 51.9% of its total area. That share is close to Monroe County’s 51.9%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Monroe County has 150.2 times the land area of nearby Greece CDP (4.37 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Genesee County, Livingston County, Ontario County, Orleans County, Wayne County within New York. A tract near one of these lines should be matched to the county identifier on its own records.

