St. Johns County, Florida

St. Johns County is a county in Florida with an estimated population of 320,110 in 2023. 2 cities, towns and Census places in it are indexed here.

Largest places in St. Johns County

About St. Johns County

St. Johns County is one of the counties of Florida. County governments in Florida handle local services such as courts, property records and elections; cities and towns inside the county run their own municipal services. Population figures come from the Census Bureau's Vintage 2023 estimates, which are updated annually.