Marion County, Florida Age & Gender Statistics (2024)

Total Population

400,078

Median Age

47.9

Male Median

45.9

Female Median

49.8

Marion County, Florida Population Growth

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

Marion County, Florida Demographic Trend

Since 2010, the population of has changed by +22.4%%.

+22.4%% Growth

Marion County, Florida Age & Gender Pyramid

Population pyramid for

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


Marion County, Florida Historical Population Data

YearMedian AgePopulation
202447.9400,078
202348.2387,697
202248.5378,225
202148.3370,372
202048.7360,210
201948.7353,526
201848.6348,371
201748.5343,778
201648.5340,341
201548.2336,811
201447.8334,771
201347.6333,503
201247.4331,987
201147.0330,100
201046.7326,833

Marion County, Florida Age Group Breakdown (2024)

Age CohortPercentage
Under 54.7%
5–1714.1%
18–246.5%
25–3411.0%
35–5421.5%
55–6413.6%
65+28.7%

Dependency Ratios for Marion County, Florida

Total Dependency Ratio:
90.3
Youth Dependency:
35.7
Old-Age Dependency:
54.6

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



Age & Gender FAQs for Marion County, Florida

The median age in Marion County, Florida is 47.9 years.

According to latest Census data, the total population of Marion County, Florida is 400,078.

In Marion County, Florida, seniors (ages 65+) make up 28.7% of the population, while children under 18 represent 14.1%.

Based on historical data since 2010, the population in Marion County, Florida has remained stable.
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