ZIP code 03909 is officially located in the state of Maine, primarily serving the city of York. It falls under the administrative jurisdiction of York County. When planning mail delivery, logistics routing, or demographic research, 03909 operates within the Eastern Time (ET) timezone and supports the 280 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 03909 ZIP Code Tabulation Area is approximately 44,380. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $93,909.