ZIP code 10931 is officially located in the state of New york, primarily serving the city of Hillburn. It falls under the administrative jurisdiction of Rockland County. When planning mail delivery, logistics routing, or demographic research, 10931 operates within the Eastern Time (ET) timezone and supports the 837 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 10931 ZIP Code Tabulation Area is approximately 28,137. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $67,931.