ZIP code 85621 is officially located in the state of Arizona, primarily serving the city of Nogales. It falls under the administrative jurisdiction of Santa Cruz County. When planning mail delivery, logistics routing, or demographic research, 85621 operates within the Mountain Time (MT) timezone and supports the 340 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 85621 ZIP Code Tabulation Area is approximately 10,140. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $97,621.