ZIP code 27577 is officially located in the state of North carolina, primarily serving the city of Smithfield. It falls under the administrative jurisdiction of Johnston County. When planning mail delivery, logistics routing, or demographic research, 27577 operates within the Eastern Time (ET) timezone and supports the 898 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 27577 ZIP Code Tabulation Area is approximately 15,598. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $49,577.