ZIP code 20639 is officially located in the state of Maryland, primarily serving the city of Huntingtown. It falls under the administrative jurisdiction of Calvert County. When planning mail delivery, logistics routing, or demographic research, 20639 operates within the Eastern Time (ET) timezone and supports the 495 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 20639 ZIP Code Tabulation Area is approximately 25,695. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $103,639.