ZIP code 21520 is officially located in the state of Maryland, primarily serving the city of Accident. It falls under the administrative jurisdiction of Garrett County. When planning mail delivery, logistics routing, or demographic research, 21520 operates within the Eastern Time (ET) timezone and supports the 222 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 21520 ZIP Code Tabulation Area is approximately 16,322. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $80,520.