ZIP code 45309 is officially located in the state of Ohio, primarily serving the city of Brookville. It falls under the administrative jurisdiction of Montgomery County. When planning mail delivery, logistics routing, or demographic research, 45309 operates within the Eastern Time (ET) timezone and supports the 756 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 45309 ZIP Code Tabulation Area is approximately 43,456. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $93,309.