St. Leonard is a city located in Maryland. St. Leonard has a 2020 population of 460. St. Leonard is currently declining at a rate of 0.00% annually and its population has decreased by -38.01% since the most recent census, which recorded a population of 742 in 2010. St. Leonard reached it's highest population of 842 in 2011.
The average household income in St. Leonard is $179,630 with a poverty rate of 0.00%. The median rental costs in recent years comes to - per month, and the median house value is $438,400. The median age in St. Leonard is 44.7 years, 40.7 years for males, and 44.9 years for females. For every 100 females there are 96.6 males.