ZIP code 81647 is officially located in the state of Colorado, primarily serving the city of New castle. It falls under the administrative jurisdiction of Garfield County. When planning mail delivery, logistics routing, or demographic research, 81647 operates within the Mountain Time (MT) timezone and supports the 606 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 81647 ZIP Code Tabulation Area is approximately 37,006. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $139,647.