ZIP code 45822 is officially located in the state of Ohio, primarily serving the city of Carthagena. It falls under the administrative jurisdiction of Mercer County. When planning mail delivery, logistics routing, or demographic research, 45822 operates within the Eastern Time (ET) timezone and supports the 721 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 45822 ZIP Code Tabulation Area is approximately 34,321. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $114,822.