ZIP code 78639 is officially located in the state of Texas, primarily serving the city of Kingsland. It falls under the administrative jurisdiction of Llano County. When planning mail delivery, logistics routing, or demographic research, 78639 operates within the Central Time (CT) timezone and supports the 350 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 78639 ZIP Code Tabulation Area is approximately 33,950. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $103,639.