ZIP code 73620 is officially located in the state of Oklahoma, primarily serving the city of Arapaho. It falls under the administrative jurisdiction of Custer County. When planning mail delivery, logistics routing, or demographic research, 73620 operates within the Central Time (CT) timezone and supports the 464 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 73620 ZIP Code Tabulation Area is approximately 20,764. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $80,620.