ZIP code 59055 is officially located in the state of Montana, primarily serving the city of Melville. It falls under the administrative jurisdiction of Sweet Grass County. When planning mail delivery, logistics routing, or demographic research, 59055 operates within the Mountain Time (MT) timezone and supports the 678 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 59055 ZIP Code Tabulation Area is approximately 10,478. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $75,055.