Glen Arm is located in Maryland. Glen Arm, Maryland 21057 has a population of 4,179. Glen Arm 21057 is less family-centric than the surrounding county with 25% households with children. The county percentage for households with children is 27%.
The median household income in Glen Arm, Maryland 21057 is $126,084. The median household income for the surrounding county is $78,866 compared to the national median of $66,222. The median age of people living in Glen Arm 21057 is 53 years.
The average high temperature in July is 87.4 degrees, with an average low temperature in January of 24.8 degrees. The annual precipitation is 51.53.