ZIP code 99688 is officially located in the state of Alaska, primarily serving the city of Willow. It falls under the administrative jurisdiction of Matanuska-Susitna Borough County. When planning mail delivery, logistics routing, or demographic research, 99688 operates within the Pacific Time (PT) timezone and supports the 310 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 99688 ZIP Code Tabulation Area is approximately 44,410. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $136,688.