ZIP code 73556 is officially located in the state of Oklahoma, primarily serving the city of Martha. It falls under the administrative jurisdiction of Jackson County. When planning mail delivery, logistics routing, or demographic research, 73556 operates within the Central Time (CT) timezone and supports the 717 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 73556 ZIP Code Tabulation Area is approximately 40,617. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $92,556.