ZIP code 16623 is officially located in the state of Pennsylvania, primarily serving the city of Cassville. It falls under the administrative jurisdiction of Huntingdon County. When planning mail delivery, logistics routing, or demographic research, 16623 operates within the Eastern Time (ET) timezone and supports the 544 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 16623 ZIP Code Tabulation Area is approximately 44,644. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $131,623.