St. Johns County, Florida Age & Gender Distribution (2024)
Population distribution by age and gender for St. Johns County, Florida
St. Johns County, Florida Age & Gender Statistics (2024)
Total Population
306,934
Median Age
44.2
Male Median
43.7
Female Median
44.7
St. Johns County, Florida Population Growth
St. Johns County, Florida Demographic Trend
Since 2010, the population of has changed by +69.9%%.
+69.9%% Growth
St. Johns County, Florida Age & Gender Pyramid
Figure 2: Population distribution by age and gender for 2024.
St. Johns County, Florida Historical Population Data
| Year | Median Age | Population |
|---|---|---|
| 2024 | 44.2 | 306,934 |
| 2023 | 44.0 | 292,243 |
| 2022 | 44.0 | 278,722 |
| 2021 | 43.8 | 265,724 |
| 2020 | 43.7 | 255,410 |
| 2019 | 43.7 | 244,674 |
| 2018 | 43.4 | 235,503 |
| 2017 | 43.1 | 226,578 |
| 2016 | 42.9 | 218,362 |
| 2015 | 42.7 | 210,495 |
| 2014 | 42.6 | 203,402 |
| 2013 | 42.5 | 197,115 |
| 2012 | 42.2 | 191,495 |
| 2011 | 42.0 | 186,077 |
| 2010 | 41.8 | 180,624 |
St. Johns County, Florida Age Group Breakdown (2024)
| Age Cohort | Percentage |
|---|---|
| Under 5 | 4.5% |
| 5–17 | 17.0% |
| 18–24 | 6.7% |
| 25–34 | 9.0% |
| 35–54 | 27.7% |
| 55–64 | 13.9% |
| 65+ | 21.1% |
Dependency Ratios for St. Johns County, Florida
- Total Dependency Ratio:
- 74.3
- Youth Dependency:
- 37.6
- Old-Age Dependency:
- 36.7
The dependency ratio measures dependents (ages 0-17 and 65+) per 100 working-age individuals (ages 18-64).
Age & Gender FAQs for St. Johns County, Florida
The median age in St. Johns County, Florida is 44.2 years.
According to latest Census data, the total population of St. Johns County, Florida is 306,934.
In St. Johns County, Florida, seniors (ages 65+) make up 21.1% of the population, while children under 18 represent 17.0%.
Based on historical data since 2010, the population in St. Johns County, Florida is aging.