Mount Joy is a borough in Lancaster County, Pennsylvania, United States. The population was 6,765 at the 2000 census.

Geography

Mount Joy is located at 40°6′36″N 76°30′40″W (40.109895, -76.510977).

According to the United States Census Bureau, the borough has a total area of 2.3 square miles (6.1 km²), all of it land. It is considered to be part of the Appalachians.