ZIP code 18321 is officially located in the state of Pennsylvania, primarily serving the city of Bartonsville. It falls under the administrative jurisdiction of Monroe County. When planning mail delivery, logistics routing, or demographic research, 18321 operates within the Eastern Time (ET) timezone and supports the 806 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 18321 ZIP Code Tabulation Area is approximately 31,606. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $97,321.