ZIP code 03901 is officially located in the state of Maine, primarily serving the city of Berwick. It falls under the administrative jurisdiction of York County. When planning mail delivery, logistics routing, or demographic research, 03901 operates within the Eastern Time (ET) timezone and supports the 398 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 03901 ZIP Code Tabulation Area is approximately 35,398. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $57,901.