The village is at the northeastern entrance to Letchworth State Park, which contains a scenic gorge and triple waterfall on the Genesee River.

An earlier and much smaller dam, still extant in the village, was used for mills; now it is a small hydroelectric generating station.

In the early 21st century, Greg O'Connell, a retired New York City detective and developer of properties in Red Hook, Brooklyn, bought 19 buildings along the town's Main Street in an effort to revive the downtown area.

According to the United States Census Bureau, the village has a total area of 2.0 square miles (5.3 km2), all land.

Compared to the rest of Upstate New York (and all of the northeastern United States), Mount Morris receives relatively little precipitation.

A 1910 study reported an average annual total of 25.3 inches (640 mm) of precipitation, making Mount Morris the driest place in New York.

This through route, made redundant by the 1960 Erie Lackawanna merger, was downgraded in 1963 with the abandonment of a portion of the line between nearby Groveland and Wayland, over torturous Dansville Hill.

2) The Dansville and Mount Morris Railroad (and predecessor Erie & Genesee Valley RR) linked its namesake communities from c. 1871 to 1940.

3) The Pennsylvania Railroad (and predecessors) served Mount Morris from c. 1882 to c. 1963 on its Olean-Hinsdale-Rochester branch line.

The PRR through Mount Morris was abandoned in 1963, and the right-of-way now forms the basis of the Genesee Valley Greenway.