ZIP code 17889 is officially located in the state of Pennsylvania, primarily serving the city of Winfield. It falls under the administrative jurisdiction of Union County. When planning mail delivery, logistics routing, or demographic research, 17889 operates within the Eastern Time (ET) timezone and supports the 297 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 17889 ZIP Code Tabulation Area is approximately 30,397. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $53,889.