Mardela Springs 21837 Real EstateMardela Springs is located in Maryland. Mardela Springs, Maryland 21837has a population of 480. Mardela Springs 21837 is less family-centric than the surrounding county with 21.2% of the households containing married families with children. The county average for households married with children is 25.13%. The median household income in Mardela Springs, Maryland 21837 is $85,815. The median household income for the surrounding county is $63,610 compared to the national median of $69,021. The median age of people living in Mardela Springs 21837 is 32.4 years. Mardela Springs WeatherThe average high temperature in July is 88.2 degrees, with an average low temperature in January of 28.1 degrees. The average rainfall is approximately 45.2 inches per year, with 5.9 inches of snow per year. Mardela Springs MapReal estate near Mardela SpringsNearby CitiesNearby Cities Homes for Sale |