ZIP code 80428 is officially located in the state of Colorado, primarily serving the city of Clark. It falls under the administrative jurisdiction of Routt County. When planning mail delivery, logistics routing, or demographic research, 80428 operates within the Mountain Time (MT) timezone and supports the 513 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 80428 ZIP Code Tabulation Area is approximately 35,513. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $116,428.