ZIP code 10543 is officially located in the state of New york, primarily serving the city of Mamaroneck. It falls under the administrative jurisdiction of Westchester County. When planning mail delivery, logistics routing, or demographic research, 10543 operates within the Eastern Time (ET) timezone and supports the 420 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 10543 ZIP Code Tabulation Area is approximately 36,820. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $71,543.