St. Johns County's estimated 2026 population is 359,322 with a growth rate of 3.75% in the past year according to the most recent United States census data. St. Johns County is the 21st largest county in Florida. The 2010 population was 191,268 and has seen a growth of 87.86% since that time.
Data after 2023 is projected based on recent change
Overall: 44.2 years
Female: 44.7 years
Male: 43.7 years
There are 240,741 adults, (64,617 of whom are seniors) in St. Johns County.
Female: 156,763 (51.1%)
Male: 150,171 (48.9%)
The racial composition of St. Johns County includes 79.25% White, 5.11% Black or African American, 3.76% Asian, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 243,237 | 79.25% |
| Two or more races | 29,910 | 9.74% |
| Black or African American | 15,694 | 5.11% |
| Asian | 11,538 | 3.76% |
| Other race | 6,155 | 2.01% |
| Native American | 266 | 0.09% |
| Native Hawaiian or Pacific Islander | 134 | 0.04% |
St. Johns County's average per capita income is $63,804. Household income levels show a median of $109,839. The poverty rate stands at 6.54%.
Name | Median | Mean |
|---|---|---|
| Married Families | $144,289 | - |
| Families | $134,118 | $170,789 |
| Households | $109,839 | $148,427 |
| Non Families | $53,972 | $80,693 |
Average Income
Median Household Income
Poverty Rate