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

Total Population

28,664

Median Age

42.6

Male Median

39.6

Female Median

44.8

Marion County, South Carolina Population Growth

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

Marion County, South Carolina Demographic Trend

Since 2010, the population of has changed by -14.6%%.

-14.6%% Growth

Marion County, South Carolina Age & Gender Pyramid

Population pyramid for

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


Marion County, South Carolina Historical Population Data

YearMedian AgePopulation
202442.628,664
202343.028,900
202241.629,212
202141.229,585
202040.730,954
201940.731,308
201840.431,562
201740.031,765
201640.231,975
201539.532,167
201439.732,411
201339.332,695
201239.133,038
201139.433,335
201039.133,568

Marion County, South Carolina Age Group Breakdown (2024)

Age CohortPercentage
Under 55.1%
5–1717.0%
18–247.5%
25–3410.9%
35–5424.4%
55–6413.4%
65+21.6%

Dependency Ratios for Marion County, South Carolina

Total Dependency Ratio:
77.7
Youth Dependency:
39.3
Old-Age Dependency:
38.5

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



Age & Gender FAQs for Marion County, South Carolina

The median age in Marion County, South Carolina is 42.6 years.

According to latest Census data, the total population of Marion County, South Carolina is 28,664.

In Marion County, South Carolina, seniors (ages 65+) make up 21.6% of the population, while children under 18 represent 17.0%.

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