Onslow County ZIP Codes
North Carolina, United States · 13 codes
Onslow County in North Carolina has 13 ZIP codes, from 28445 to 28584, serving 13 places.
ZIP codes in Onslow
Frequently asked questions
What is the ZIP code of Onslow?
Onslow has 13 ZIP codes, from 28445 to 28584. The table lists the places each one serves.
How many places are listed in Onslow County?
13 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.