St. Johns County
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- Population
- 306,934
- Area
- 600.64 sq mi (1,555.65 km²), 220.89 sq mi water
- Median age
- 44.2
- Households
- 115,794
- Persons per household
- 2.6
- Median household income
- $109,839
- Median house value
- $489,200
Demographics: 2020–2024 ACS
St. Johns County offers a captivating blend of historic charm, pristine beaches, and vibrant communities. Encompassing around 600 square miles, the county boasts a rich history dating back to the 16th century, evident in its Spanish moss-draped oaks and preserved landmarks. Beyond its historical significance, St. Johns County beckons visitors with its stunning Atlantic coastline, featuring sugary white sands and crystal-clear waters ideal for swimming, sunbathing, and water sports. Today, St. Johns County is a thriving community with a population of over 306,000. The county seat is St. Augustine, the nation's oldest permanently occupied European-established settlement, but the unincorporated community of St. Johns actually has a larger population. Ponte Vedra Beach is another popular area, known for its world-class golf courses and resorts.
Local News

Florida photographers honored in 2026 Audubon Photography Awards
A photograph of a Roseate Spoonbill taken in St. Augustine earned Jacqueline Burke the Grand Prize in the 2026 Audubon Photography Awards. Two other Florida residents received honorable mentions for images featuring a Common Nighthawk and a Barred Owl.
PRESS RELEASE: Regular Commission Meeting Highlights-September 8, 2026
The City of St. Augustine Beach held the regular commission meeting on September 8, 2026

PRESS RELEASE: Electric Mobility Device Ordinance Approved
The City of St. Augustine Beach approved an Electric Mobility Device Ordinance at its regular Commission meeting on September 8, 2026

PRESS RELEASE: Tentative Budget Meeting Highlights - September 8, 2026
The City of St. Augustine Beach held the FY 2027 Tentative Budget Meeting on September 8, 2026

WHAT TO DO | Florida Fin Fest; BioBlitz at Blue Cypress; ‘Catch Me If You Can’
A festival benefitting marine life at Jacksonville Beach, a guided nature walk in Arlington, and a musical in St. Augustine are What to Do this weekend.