ZIP code 28521 is officially located in the state of North carolina, primarily serving the city of Chinquapin. It falls under the administrative jurisdiction of Duplin County. When planning mail delivery, logistics routing, or demographic research, 28521 operates within the Eastern Time (ET) timezone and supports the 773 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 28521 ZIP Code Tabulation Area is approximately 18,973. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $97,521.