ZIP code 21837 is officially located in the state of Maryland, primarily serving the city of Mardela springs. It falls under the administrative jurisdiction of Wicomico County. When planning mail delivery, logistics routing, or demographic research, 21837 operates within the Eastern Time (ET) timezone and supports the 707 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 21837 ZIP Code Tabulation Area is approximately 37,107. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $69,837.