ZIP code 28339 is officially located in the state of North carolina, primarily serving the city of Erwin. It falls under the administrative jurisdiction of Harnett County. When planning mail delivery, logistics routing, or demographic research, 28339 operates within the Eastern Time (ET) timezone and supports the 244 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 28339 ZIP Code Tabulation Area is approximately 21,244. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $103,339.