ZIP code 22603 is officially located in the state of Virginia, primarily serving the city of Winchester. It falls under the administrative jurisdiction of Frederick County. When planning mail delivery, logistics routing, or demographic research, 22603 operates within the Eastern Time (ET) timezone and supports the 538 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 22603 ZIP Code Tabulation Area is approximately 24,338. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $91,603.