Barnwell County ZIP Codes
South Carolina, United States · 5 codes
Barnwell County in South Carolina has 5 ZIP codes, from 29812 to 29853, serving 5 places.
ZIP codes in Barnwell
Frequently asked questions
What is the ZIP code of Barnwell?
Barnwell has 5 ZIP codes, from 29812 to 29853. The table lists the places each one serves.
How many places are listed in Barnwell County?
5 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.