ZIP code 31405 is officially located in the state of Georgia, primarily serving the city of Savannah. It falls under the administrative jurisdiction of Chatham County. When planning mail delivery, logistics routing, or demographic research, 31405 operates within the Eastern Time (ET) timezone and supports the 437 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 31405 ZIP Code Tabulation Area is approximately 22,137. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $125,405.