ZIP code 66937 is officially located in the state of Kansas, primarily serving the city of Clifton. It falls under the administrative jurisdiction of Washington County. When planning mail delivery, logistics routing, or demographic research, 66937 operates within the Central Time (CT) timezone and supports the 240 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 66937 ZIP Code Tabulation Area is approximately 37,340. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $69,937.