ZIP code 78221 is officially located in the state of Texas, primarily serving the city of San antonio. It falls under the administrative jurisdiction of Bexar County. When planning mail delivery, logistics routing, or demographic research, 78221 operates within the Central Time (CT) timezone and supports the 279 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 78221 ZIP Code Tabulation Area is approximately 20,579. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $97,221.