ZIP code 49931 is officially located in the state of Michigan, primarily serving the city of Houghton. It falls under the administrative jurisdiction of Houghton County. When planning mail delivery, logistics routing, or demographic research, 49931 operates within the Central Time (CT) timezone and supports the 820 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 49931 ZIP Code Tabulation Area is approximately 10,620. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $67,931.