ZIP code 07823 is officially located in the state of New jersey, primarily serving the city of Belvidere. It falls under the administrative jurisdiction of Warren County. When planning mail delivery, logistics routing, or demographic research, 07823 operates within the Eastern Time (ET) timezone and supports the 691 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 07823 ZIP Code Tabulation Area is approximately 18,891. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $131,823.