ZIP code 77617 is officially located in the state of Texas, primarily serving the city of Gilchrist. It falls under the administrative jurisdiction of Galveston County. When planning mail delivery, logistics routing, or demographic research, 77617 operates within the Central Time (CT) timezone and supports the 523 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 77617 ZIP Code Tabulation Area is approximately 25,023. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $129,617.