ZIP code 84780 is officially located in the state of Utah, primarily serving the city of Washington. It falls under the administrative jurisdiction of Washington County. When planning mail delivery, logistics routing, or demographic research, 84780 operates within the Mountain Time (MT) timezone and supports the 445 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 84780 ZIP Code Tabulation Area is approximately 31,245. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $100,780.