ZIP code 03229 is officially located in the state of New hampshire, primarily serving the city of Hopkinton. It falls under the administrative jurisdiction of Merrimack County. When planning mail delivery, logistics routing, or demographic research, 03229 operates within the Eastern Time (ET) timezone and supports the 353 area codes.
According to the latest US Census Bureau and American Community Survey (ACS) datasets, the total population residing within the 03229 ZIP Code Tabulation Area is approximately 26,253. Understanding local economics is critical for market analysis; the median household income in this postal area sits at $133,229.