ZIP code 46319 is officially located in the state of Indiana, primarily serving the city of Griffith. It falls under the administrative jurisdiction of Lake County. When planning mail delivery, logistics routing, or demographic research, 46319 operates within the Central Time (CT) timezone and supports the 594 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 46319 ZIP Code Tabulation Area is approximately 43,294. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $63,319.