The Rock is an unincorporated community and census-designated place in Upson County, Georgia, United States. The Rock is located on Georgia State Route 36, 7 miles northeast of Thomaston. The Rock has a post office with ZIP code 30285, although the post office is on the list to be closed. The Rock is also home to the area-famous Rock Ranch, a small theme park with a farming theme. The Rock is bordered by the cities of Barnesville, Hannahs Mill, Meansville, and Yatesville.