ZIP code 75771 is officially located in the state of Texas, primarily serving the city of Mt sylvan. It falls under the administrative jurisdiction of Smith County. When planning mail delivery, logistics routing, or demographic research, 75771 operates within the Central Time (CT) timezone and supports the 263 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 75771 ZIP Code Tabulation Area is approximately 17,763. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $47,771.