Deer Lake State Park, State park near Santa Rosa Beach, United States.

Deer Lake State Park is a Florida State Park on CR 30A in Santa Rosa Beach, Walton County, northwestern Florida, with a beach, birding, fishing, picnicking areas, swimming and wildlife viewing. Its sister park is Grayton Beach State Recreation Area. The land lies about 1 metre above sea level, with the Gulf of Mexico immediately to the south.

Deer Lake State Park lies on CR 30A at Santa Rosa Beach in Walton County, northwestern Florida, and its sister park is Grayton Beach State Recreation Area. The sources give no founding date or early history for the park, and record only that it sits about one metre above sea level, with the Gulf of Mexico immediately to its south.

Deer Lake State Park lies on CR 30A at Santa Rosa Beach, and its sister park is Grayton Beach State Recreation Area. Visitors come for birding, fishing, picnicking, swimming and wildlife viewing along the beach and dunes. The park sits in Walton County, about 16.5 km west of Laguna Beach.

Deer Lake State Park lies on CR 30A in Santa Rosa Beach, with its sister park Grayton Beach State Recreation Area nearby. The park has beaches, birding, fishing, picnicking areas, swimming and wildlife viewing; check water conditions before swimming or fishing, as they vary with season and weather.

This lake system is one of only about 15 similar coastal dune lakes found along the entire Panhandle coast of Florida. What makes it special is that fresh water and salt water mix periodically in unexpected ways depending on seasonal changes and weather patterns.