Coos County ZIP Codes
New Hampshire, United States · 16 codes
Coos County in New Hampshire has 16 ZIP codes, from 03570 to 03598, serving 16 places.
ZIP codes in Coos
Frequently asked questions
What is the ZIP code of Coos?
Coos has 16 ZIP codes, from 03570 to 03598. The table lists the places each one serves.
How many places are listed in Coos County?
16 places.
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.