ZIP code 59911 is officially located in the state of Montana, primarily serving the city of Swan lake. It falls under the administrative jurisdiction of Flathead County. When planning mail delivery, logistics routing, or demographic research, 59911 operates within the Mountain Time (MT) timezone and supports the 720 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 59911 ZIP Code Tabulation Area is approximately 4,220. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $127,911.