ZIP code 06419 is officially located in the state of Connecticut, primarily serving the city of Killingworth. It falls under the administrative jurisdiction of Middlesex County. When planning mail delivery, logistics routing, or demographic research, 06419 operates within the Eastern Time (ET) timezone and supports the 591 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 06419 ZIP Code Tabulation Area is approximately 25,791. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $63,419.