Barnwell County Population 2018

Barnwell County's estimated population is 21,345 with a growth rate of -1.14% in the past year according to the most recent United States census data. Barnwell County is the 39th largest county in South Carolina.

Year Population Growth Growth Rate
201721,345-246-1.14%
201621,591-182-0.84%
201521,773-249-1.13%
201422,022-189-0.85%
201322,211-146-0.65%
201222,357-101-0.45%
201122,458-179-0.79%
201022,6372,34411.55%
199020,2934252.14%
198019,8682,69215.67%
197017,176-483-2.74%
196017,6593932.28%
195017,266-2,872-14.26%
194020,138-1,083-5.10%
193021,221-1,860-8.06%
192023,081-11,128-32.53%
191034,209-1,295-3.65%
190035,504-9,109-20.42%
189044,6134,75611.93%
188039,8574,13311.57%
187035,7244,98116.20%
186030,7434,13515.54%
185026,6085,13723.93%
184021,4712,23511.62%
183019,2364,48630.41%
182014,7502,47020.11%
181012,2804,90466.49%
18007,3760.00%

Barnwell County Population Growth

Population Data via

Barnwell County Race Data

Race Population Percentage
White11,48353.80%
Black or African American9,61645.05%
Two or More Races3361.57%
Asian1420.67%
American Indian and Alaska Native1240.58%
Native Hawaiian and Other Pacific Islander50.02%

Barnwell County Population Pyramid

0k0k0k1k1k Male Population0k0k0k1k1k Female Population8580757065605550454035302520151050
Data Sources
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990