ZIP code 08558 is officially located in the state of New jersey, primarily serving the city of Skillman. It falls under the administrative jurisdiction of Somerset County. When planning mail delivery, logistics routing, or demographic research, 08558 operates within the Eastern Time (ET) timezone and supports the 304 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 08558 ZIP Code Tabulation Area is approximately 43,704. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $126,558.