Keymar is located in Maryland. Keymar, Maryland 21757 has a population of 2,849. Keymar 21757 is less family-centric than the surrounding county with 24% households with children. The county percentage for households with children is 30%.
The median household income in Keymar, Maryland 21757 is $83,028. The median household income for the surrounding county is $99,059 compared to the national median of $66,222. The median age of people living in Keymar 21757 is 45.2 years.
The average high temperature in July is 86.78 degrees, with an average low temperature in January of 22.73 degrees. The annual precipitation is 44.1.