ZIP code 21617 is officially located in the state of Maryland, primarily serving the city of Centreville. It falls under the administrative jurisdiction of Queen Annes County. When planning mail delivery, logistics routing, or demographic research, 21617 operates within the Eastern Time (ET) timezone and supports the 324 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 21617 ZIP Code Tabulation Area is approximately 12,924. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $129,617.