St. Johns County, FL population age distribution
A complete breakdown of St. Johns County's age demographics from 0 to 85 years, distributed across 18 age groups is listed in the table below.
| Age Group | Population | % of Total Population |
|---|---|---|
| Under 5 years | 13,011 | 4.67% |
| 5 to 9 years | 16,461 | 5.91% |
| 10 to 14 years | 19,146 | 6.87% |
| 15 to 19 years | 17,587 | 6.31% |
| 20 to 24 years | 13,698 | 4.91% |
| 25 to 29 years | 11,283 | 4.05% |
| 30 to 34 years | 14,258 | 5.12% |
| 35 to 39 years | 18,497 | 6.64% |
| 40 to 44 years | 18,951 | 6.8% |
| 45 to 49 years | 19,290 | 6.92% |
| 50 to 54 years | 19,303 | 6.93% |
| 55 to 59 years | 20,011 | 7.18% |
| 60 to 64 years | 19,470 | 6.99% |
| 65 to 69 years | 17,834 | 6.4% |
| 70 to 74 years | 16,941 | 6.08% |
| 75 to 79 years | 10,876 | 3.9% |
| 80 to 84 years | 6,108 | 2.19% |
| 85 years and over | 5,997 | 2.15% |
TABLE OF CONTENTS
St. Johns County, FL population by age group
Sources: U.S. Census Bureau, American Community Survey (ACS) 2018-2022
FIGURE 1
St. Johns County, FL population by age group.
The largest age group is 55 to 59 years with a population of 20,011 (7.18% of the total population).
The largest age group in St. Johns County, FL was for the group of age 55 to 59 years with a population of 20,011 (7.18%), according to the 2018-2022 American Community Survey.
At the same time, the smallest age group in St. Johns County, FL was the 85 years and over with a population of 5,997 (2.15%).
St. Johns County, FL population by age cohort
To better understand the age distribution of St. Johns County, FL's population, we divided it into the following 3 cohorts:
- Children : Under the age of 18 years
- Adults (working population): Between the age of 18 and 64 years
- Seniors: 65 years and above
FIGURE 2
St. Johns County, FL population by age cohort
The largest age group was 18 to 64 years with a population of 160,989 (57.76% of the total population).
Here's the population for each of the three cohorts.
| Age Group | Population | % of Total Population |
|---|---|---|
| Under 18 years | 59,977 | 21.52% |
| 18 to 64 years | 160,989 | 57.76% |
| 65 years and over | 57,756 | 20.72% |
Key stats for each age cohort as per our analysis of U.S. Census Bureau American Community Survey:
- St. Johns County 's population under 18 was 21.52%, compared to the 22.11% nationwide.
- St. Johns County's working population (between 18 and 64) was 57.76%, compared to 61.36% nationwide.
- St. Johns County's elderly or the senior population (over 65 age) was 20.72% as compared to 16.53% nationwide.
St. Johns County, FL population pyramid
Population pyramid for St. Johns County, FL is charted below using the estimates from U.S. Census Bureau's American Community Survey 5-Year estimates. A wide base suggests population increase, narrow base indicates declining birth rates.
Key stats from our analysis of the St. Johns County's population pyramid:
- Youth dependency ratio, which is the number of children aged 0-14 per 100 persons aged 15-64, for St. Johns County, FL, is 28.2.
- Old-age dependency ratio, which is the number of persons aged 65 or over per 100 persons aged 15-64, for St. Johns County, FL, is 33.5.
- Total dependency ratio for St. Johns County, FL is 61.7.
- Potential support ratio, which is the number of youth (working age population) per elderly, for St. Johns County, FL is 3.0.
FIGURE 3
St. Johns County, FL population pyramid
St. Johns County population distrubution across age and gender. A wide base suggests population increase, narrow base indicates declining birth rates.
Here's the St. Johns County, FL's male and female population across different age groups:
| Age Group | Population(Male) | Population(Female) | Total Population |
|---|---|---|---|
| Under 5 years | 6,650 | 6,361 | 13,011 |
| 5 to 9 years | 8,486 | 7,975 | 16,461 |
| 10 to 14 years | 9,610 | 9,536 | 19,146 |
| 15 to 19 years | 9,091 | 8,496 | 17,587 |
| 20 to 24 years | 7,033 | 6,665 | 13,698 |
| 25 to 29 years | 5,579 | 5,704 | 11,283 |
| 30 to 34 years | 6,884 | 7,374 | 14,258 |
| 35 to 39 years | 8,846 | 9,651 | 18,497 |
| 40 to 44 years | 9,526 | 9,425 | 18,951 |
| 45 to 49 years | 9,816 | 9,474 | 19,290 |
| 50 to 54 years | 9,675 | 9,628 | 19,303 |
| 55 to 59 years | 9,775 | 10,236 | 20,011 |
| 60 to 64 years | 9,284 | 10,186 | 19,470 |
| 65 to 69 years | 8,512 | 9,322 | 17,834 |
| 70 to 74 years | 8,034 | 8,907 | 16,941 |
| 75 to 79 years | 5,122 | 5,754 | 10,876 |
| 80 to 84 years | 2,442 | 3,666 | 6,108 |
| 85 years and over | 2,457 | 3,540 | 5,997 |
Things to know
What is the population of St. Johns County, FL under 18?
St. Johns County's population under the age of 18 is 59,977, as per the latest U.S. Census Bureau's American Community Survey estimates. This population is 21.52% of the total resident population of St. Johns County, FL.
What is the aging population in St. Johns County, FL?
St. Johns County's population aged 65 years and above was 57,756. As per the U.S. Census Bureau's American Community Survey, this population is 20.72% of the entire population.
References
- U.S. Census Bureau American Community Survey (ACS) 2018-2022 5-Year Estimates