ZIP code 51649 is officially located in the state of Iowa, primarily serving the city of Randolph. It falls under the administrative jurisdiction of Fremont County. When planning mail delivery, logistics routing, or demographic research, 51649 operates within the Central Time (CT) timezone and supports the 697 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 51649 ZIP Code Tabulation Area is approximately 27,297. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $73,649.