ZIP code 78675 is officially located in the state of Texas, primarily serving the city of Willow city. It falls under the administrative jurisdiction of Gillespie County. When planning mail delivery, logistics routing, or demographic research, 78675 operates within the Central Time (CT) timezone and supports the 489 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 78675 ZIP Code Tabulation Area is approximately 34,789. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $115,675.