ZIP code 66540 is officially located in the state of Kansas, primarily serving the city of Soldier. It falls under the administrative jurisdiction of Jackson County. When planning mail delivery, logistics routing, or demographic research, 66540 operates within the Central Time (CT) timezone and supports the 707 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 66540 ZIP Code Tabulation Area is approximately 32,207. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $120,540.