ZIP code 74531 is officially located in the state of Oklahoma, primarily serving the city of Calvin. It falls under the administrative jurisdiction of Hughes County. When planning mail delivery, logistics routing, or demographic research, 74531 operates within the Central Time (CT) timezone and supports the 663 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 74531 ZIP Code Tabulation Area is approximately 34,263. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $67,531.