ZIP code 03045 is officially located in the state of New hampshire, primarily serving the city of Dunbarton. It falls under the administrative jurisdiction of Hillsborough County. When planning mail delivery, logistics routing, or demographic research, 03045 operates within the Eastern Time (ET) timezone and supports the 845 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 03045 ZIP Code Tabulation Area is approximately 23,245. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $105,045.