ZIP Code 03854
New Castle · Rockingham, New Hampshire
03854 is the ZIP code of New Castle in Rockingham, New Hampshire, United States.
- ZIP Code
- 03854
- County
- Rockingham
- State
- New Hampshire
- Country
- United States
Place with ZIP code 03854
| Place | County | Location |
|---|---|---|
| New Castle | Rockingham | 43.068, -70.720 |
Near Boston
The nearest major city is Boston, about 84 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 03854?
New Castle.
Which county and state is 03854 in?
Rockingham, New Hampshire, United States.
What is the nearest major city to 03854?
Boston, about 84 km away.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.