Fort Clinch State Park Campground offers 69 modern campsites across two separate campgrounds—the Amelia River campground with 42 shaded sites along the St. Marys River, and the Atlantic Beach campground with 27 sites near the ocean.

Both campgrounds feature full amenities including electric hookups (30/50-amp), potable water, fire rings, picnic tables, dump stations, laundry facilities, and accessible heated bathrooms; the Egans Creek public boat ramp provides direct access to Egans Creek with less boat traffic and currents than other launch points in the park.