ZIP code 04357 is officially located in the state of Maine, primarily serving the city of Richmond. It falls under the administrative jurisdiction of Sagadahoc County. When planning mail delivery, logistics routing, or demographic research, 04357 operates within the Eastern Time (ET) timezone and supports the 355 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 04357 ZIP Code Tabulation Area is approximately 28,355. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $109,357.