ZIP code 81621 is officially located in the state of Colorado, primarily serving the city of Basalt. It falls under the administrative jurisdiction of Eagle County. When planning mail delivery, logistics routing, or demographic research, 81621 operates within the Mountain Time (MT) timezone and supports the 672 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 81621 ZIP Code Tabulation Area is approximately 20,272. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $97,621.