ZIP code 11742 is officially located in the state of New york, primarily serving the city of Holtsville. It falls under the administrative jurisdiction of Suffolk County. When planning mail delivery, logistics routing, or demographic research, 11742 operates within the Eastern Time (ET) timezone and supports the 846 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 11742 ZIP Code Tabulation Area is approximately 7,146. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $54,742.