About 03854 - New Castle, New Hampshire
The ZIP code 03854 of New Castle falls within New Hampshire, the United States - a small area by population. It sits within New Castle County County.
Census data puts the population of this ZIP code at 2,679 residents. That's below the New Hampshire average of about 21,821 people per ZIP code.
Median household income is about $83,200 (near the New Hampshire average).
This ZIP code sits alongside neighboring areas like Groveton, Milford, East Hampstead within New Hampshire.