St. Augustine South is a CDP located in St. Johns County, Florida. St. Augustine South has a 2025 population of 5,109 . St. Augustine South is currently growing at a rate of 0.14% annually and its population has increased by 2.3% since the most recent census, which recorded a population of 4,994 in 2020.
The average household income in St. Augustine South is $90,505 with a poverty rate of 1.9%. The median age in St. Augustine South is 50.5 years: 49.2 years for males, and 51 years for females. For every 100 females there are 89.6 males.
Data after 2023 is projected based on recent change
The racial composition of St. Augustine South includes 88.36% White, 5.12% Asian, and smaller percentages for Black or African American, other race and multiracial populations.
White (88.36%)
Asian (5.12%)
Two or more races (4.98%)
Black or African American (1.36%)
Other race (0.19%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 4,298 | 88.36% |
| Asian | 249 | 5.12% |
| Two or more races | 242 | 4.98% |
| Black or African American | 66 | 1.36% |
| Other race | 9 | 0.19% |
Married
Widowed
Divorced
Separated
Never Married
St. Augustine South's average per capita income is $50,656. Household income levels show a median of $74,873. The poverty rate stands at 1.9%.
Name | Median | Mean |
|---|---|---|
| Married Families | $91,863 | - |
| Families | $82,662 | $102,152 |
| Households | $74,873 | $90,505 |
| Non Families | $54,487 | $59,433 |
Average Income
Median Household Income
Poverty Rate