Linganore is a census-designated place in Frederick County, in the U.S. state of Maryland. It consists of the area around Lake Linganore, a residential community governed by a homeowners association, located east of the city of Frederick. As of the 2020 census the CDP had a population of 12,351. Prior to 2010, the area was part of the Linganore-Bartonsville CDP. The mailing address for the area is Lake Linganore, with a ZIP code of 21774.