Mount Joy is a city located in Lancaster County Pennsylvania. With a 2020 population of 8,426, it is the 88th largest city in Pennsylvania and the 3489th largest city in the United States . Mount Joy is currently growing at a rate of 0.89% annually and its population has increased by 13.71% since the most recent census, which recorded a population of 7,410 in 2010. Mount Joy reached it's highest population of in . Spanning over 2 miles, Mount Joy has a population density of 3,495 people per square mile.
The average household income in Mount Joy is $73,885 with a poverty rate of 7.80%. The median rental costs in recent years comes to $941 per month, and the median house value is $179,700. The median age in Mount Joy is 37.4 years, 35.9 years for males, and 39.4 years for females.