County Barnwell is located in the state of South Carolina. Barnwell is spread between the coordinates of +33.2323074 Latitude and -81.37005893 Longitude. Barnwell has 5 zip codes, 7 cities, 1 area code and 6 post offices.
Below you will find more info about Barnwell and also zip codes, cities, area codes and the post offices that belong to this county.