ZIP Code 03803
Portsmouth · Rockingham, New Hampshire
03803 is the ZIP code of Portsmouth in Rockingham, New Hampshire, United States.
- ZIP Code
- 03803
- County
- Rockingham
- State
- New Hampshire
- Country
- United States
Place with ZIP code 03803
| Place | County | Location |
|---|---|---|
| Portsmouth | Rockingham | 43.072, -70.763 |
Near Boston
The nearest major city is Boston, about 83 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 03803?
Portsmouth.
Which county and state is 03803 in?
Rockingham, New Hampshire, United States.
What is the nearest major city to 03803?
Boston, about 83 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.