ZIP code 21628 is officially located in the state of Maryland, primarily serving the city of Crumpton. It falls under the administrative jurisdiction of Queen Annes County. When planning mail delivery, logistics routing, or demographic research, 21628 operates within the Eastern Time (ET) timezone and supports the 383 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 21628 ZIP Code Tabulation Area is approximately 17,883. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $116,628.