ZIP code 04003 is officially located in the state of Maine, primarily serving the city of Bailey island. It falls under the administrative jurisdiction of Cumberland County. When planning mail delivery, logistics routing, or demographic research, 04003 operates within the Eastern Time (ET) timezone and supports the 313 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 04003 ZIP Code Tabulation Area is approximately 27,613. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $91,003.