ZIP code 66860 is officially located in the state of Kansas, primarily serving the city of Madison. It falls under the administrative jurisdiction of Greenwood County. When planning mail delivery, logistics routing, or demographic research, 66860 operates within the Central Time (CT) timezone and supports the 699 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 66860 ZIP Code Tabulation Area is approximately 33,599. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $60,860.