ZIP code 59602 is officially located in the state of Montana, primarily serving the city of Helena. It falls under the administrative jurisdiction of Lewis and Clark County. When planning mail delivery, logistics routing, or demographic research, 59602 operates within the Mountain Time (MT) timezone and supports the 539 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 59602 ZIP Code Tabulation Area is approximately 16,639. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $74,602.