Barnwell County, South Carolina Age & Gender Statistics (2024)

Total Population

20,521

Median Age

40.4

Male Median

37.6

Female Median

41.8

Barnwell County, South Carolina Population Growth

Population trends in
Figure 1: Annual population growth trend for (2010–2024).

Barnwell County, South Carolina Demographic Trend

Since 2010, the population of has changed by -9.8%%.

-9.8%% Growth

Barnwell County, South Carolina Age & Gender Pyramid

Population pyramid for

Figure 2: Population distribution by age and gender for 2024.


Barnwell County, South Carolina Historical Population Data

YearMedian AgePopulation
202440.420,521
202340.720,565
202240.920,653
202141.320,801
202041.621,170
201941.321,346
201840.921,577
201740.621,788
201640.421,917
201539.822,098
201439.122,287
201338.922,399
201238.922,523
201138.522,638
201038.222,748

Barnwell County, South Carolina Age Group Breakdown (2024)

Age CohortPercentage
Under 56.6%
5–1717.2%
18–247.8%
25–3411.7%
35–5424.2%
55–6413.5%
65+19.1%

Dependency Ratios for Barnwell County, South Carolina

Total Dependency Ratio:
75.0
Youth Dependency:
41.5
Old-Age Dependency:
33.5

The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).



Age & Gender FAQs for Barnwell County, South Carolina

The median age in Barnwell County, South Carolina is 40.4 years.

According to latest Census data, the total population of Barnwell County, South Carolina is 20,521.

In Barnwell County, South Carolina, seniors (ages 65+) make up 19.1% of the population, while children under 18 represent 17.2%.

Based on historical data since 2010, the population in Barnwell County, South Carolina is aging.
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