Adelphi is located in Maryland. Adelphi, Maryland has a population of 16,850. Adelphi is less family-centric than the surrounding county with 28% households with children. The county percentage for households with children is 28%.
The median household income in Adelphi, Maryland is $72,368. The median household income for the surrounding county is $85,744 compared to the national median of $66,222. The median age of people living in Adelphi is 37.2 years.
The average high temperature in July is 88.5 degrees, with an average low temperature in January of 25.5 degrees. The annual precipitation is 44.21.