ZIP code 12121 is officially located in the state of New york, primarily serving the city of Melrose. It falls under the administrative jurisdiction of Rensselaer County. When planning mail delivery, logistics routing, or demographic research, 12121 operates within the Eastern Time (ET) timezone and supports the 433 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 12121 ZIP Code Tabulation Area is approximately 39,633. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $97,121.