ZIP code 04429 is officially located in the state of Maine, primarily serving the city of East holden. It falls under the administrative jurisdiction of Penobscot County. When planning mail delivery, logistics routing, or demographic research, 04429 operates within the Eastern Time (ET) timezone and supports the 621 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 04429 ZIP Code Tabulation Area is approximately 21,621. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $133,429.