Below are a list of the cities located in Barnwell County, SC. There are 5 total unique zip codes in Barnwell County, South Carolina. The time zone for Barnwell County is the Time zone and they follow daylight savings time. The Federal Information Processing System (FIPS) Code for echo $county.' County, '.$state_abbrev ?> is 45011.
The population in Barnwell County, SC is currently 20,580. That is a decrease of -9.09% vs the population of 22,621 in 2010.
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