ZIP code 59101 is officially located in the state of Montana, primarily serving the city of Billings. It falls under the administrative jurisdiction of Yellowstone County. When planning mail delivery, logistics routing, or demographic research, 59101 operates within the Mountain Time (MT) timezone and supports the 295 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 59101 ZIP Code Tabulation Area is approximately 19,195. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $57,101.