ZIP code 59420 is officially located in the state of Montana, primarily serving the city of Carter. It falls under the administrative jurisdiction of Chouteau County. When planning mail delivery, logistics routing, or demographic research, 59420 operates within the Mountain Time (MT) timezone and supports the 608 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 59420 ZIP Code Tabulation Area is approximately 41,908. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $80,420.