ZIP code 50431 is officially located in the state of Iowa, primarily serving the city of Coulter. It falls under the administrative jurisdiction of Franklin County. When planning mail delivery, logistics routing, or demographic research, 50431 operates within the Central Time (CT) timezone and supports the 371 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 50431 ZIP Code Tabulation Area is approximately 29,771. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $67,431.