ZIP code 18018 is officially located in the state of Pennsylvania, primarily serving the city of Bethlehem. It falls under the administrative jurisdiction of Lehigh County. When planning mail delivery, logistics routing, or demographic research, 18018 operates within the Eastern Time (ET) timezone and supports the 592 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 18018 ZIP Code Tabulation Area is approximately 34,892. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $46,018.