ZIP code 45620 is officially located in the state of Ohio, primarily serving the city of Cheshire. It falls under the administrative jurisdiction of Gallia County. When planning mail delivery, logistics routing, or demographic research, 45620 operates within the Eastern Time (ET) timezone and supports the 398 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 45620 ZIP Code Tabulation Area is approximately 33,998. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $80,620.