Green Cove Springs is the county seat of Clay County, Florida, and a small city on the west bank of the St. Johns River in the northeastern corner of the state. Located roughly 30 miles south of Jacksonville, it sits within the Jacksonville metropolitan area yet retains a distinct small-town, riverside identity that sets it apart from the larger suburbs around it. The city takes its name from a natural sulfur spring that flows just yards from the river. That spring has been central to the community for more than a century, feeding a spring-fed swimming pool in the heart of Spring Park, a riverfront green space that remains the city's social and recreational center. The spring and the river have also shaped the city's economy and history. Green Cove Springs played a notable role in the nation's military past. Naval Air Station Lee Field opened here in 1940 to train World War II pilots and was later renamed Naval Air Station Green Cove Springs; after the war, a portion of the Navy's reserve, or "mothball," fleet was moored along the river before being decommissioned. That chapter left a lasting imprint on the community, and remnants of the era remain part of local memory and history. Today Green Cove Springs is a mostly residential city with a rural feel, historic neighborhoods near its small downtown, and newer subdivisions and gated golf communities spreading outward. It serves as a government center for Clay County and draws families and young professionals seeking a quieter alternative to Jacksonville while staying within commuting distance of the city's employment centers. The city is also a gateway to the recreational waterways of the St. Johns, with boating, fishing, and kayaking accessible from downtown, while U.S. Route 17 and State Road 16 connect it to Jacksonville, the St. Augustine area, and the lakes and springs of the interior. The result is a river town that balances historic character with steady residential growth.