ZIP code 08540 is officially located in the state of New jersey, primarily serving the city of Princeton. It falls under the administrative jurisdiction of Mercer County. When planning mail delivery, logistics routing, or demographic research, 08540 operates within the Eastern Time (ET) timezone and supports the 856 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 08540 ZIP Code Tabulation Area is approximately 25,356. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $120,540.