Mechanicsville is an unincorporated community and census-designated place in St. Mary's County, Maryland. It is adjacent to the community of Charlotte Hall, which is known for its agriculture, Amish population, large farmers' market/flea market, and the Maryland Veterans Home. Mechanicsville has many small businesses and restaurants along Maryland Route 5 and Maryland Route 235. This community is served by the St. Mary's County Public Schools includingChopticon High School. As of the 2010 Census, Mechanicsville had a population of 1,508 people.