ZIP code 06438 is officially located in the state of Connecticut, primarily serving the city of Haddam. It falls under the administrative jurisdiction of Middlesex County. When planning mail delivery, logistics routing, or demographic research, 06438 operates within the Eastern Time (ET) timezone and supports the 464 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 06438 ZIP Code Tabulation Area is approximately 7,464. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $86,438.