
Mount Joy
- County:
- Lancaster County
- County Seat:
- No
- Area (mi²):
- 2.411
- State:
- Pennsylvania
Mount Joy is a borough located in Lancaster County, Pennsylvania. Mount Joy has a 2025 population of 8,357. Mount Joy is currently growing at a rate of 0.11% annually and its population has increased by 0.52% since the most recent census, which recorded a population of 8,314 in 2020.
The average household income in Mount Joy is $99,068 with a poverty rate of 10.67%. The median age in Mount Joy is 38.7 years: 34 years for males, and 41.3 years for females.