ZIP code 64840 is officially located in the state of Missouri, primarily serving the city of Diamond. It falls under the administrative jurisdiction of Newton County. When planning mail delivery, logistics routing, or demographic research, 64840 operates within the Central Time (CT) timezone and supports the 537 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 64840 ZIP Code Tabulation Area is approximately 25,037. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $120,840.