ZIP code 20855 is officially located in the state of Maryland, primarily serving the city of Derwood. It falls under the administrative jurisdiction of Montgomery County. When planning mail delivery, logistics routing, or demographic research, 20855 operates within the Eastern Time (ET) timezone and supports the 379 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 20855 ZIP Code Tabulation Area is approximately 7,379. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $75,855.