ZIP code 59929 is officially located in the state of Montana, primarily serving the city of Proctor. It falls under the administrative jurisdiction of Lake County. When planning mail delivery, logistics routing, or demographic research, 59929 operates within the Mountain Time (MT) timezone and supports the 603 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 59929 ZIP Code Tabulation Area is approximately 18,803. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $133,929.