Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in St. Johns County, FL was 14605.00000 Persons in January of 2022, according to the United States Federal Reserve. Historically, Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in St. Johns County, FL reached a record high of 14605.00000 in January of 2022 and a record low of 9771.00000 in January of 2010. Trading Economics provides the current actual value, an historical data chart and related indicators for Population Estimate, Total, Not Hispanic or Latino, Black or African American Alone (5-year estimate) in St. Johns County, FL - last updated from the United States Federal Reserve on May of 2024.