ZIP code 85637 is officially located in the state of Arizona, primarily serving the city of Sonoita. It falls under the administrative jurisdiction of Santa Cruz County. When planning mail delivery, logistics routing, or demographic research, 85637 operates within the Mountain Time (MT) timezone and supports the 229 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 85637 ZIP Code Tabulation Area is approximately 20,529. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $69,637.