Cobb County Fair 2025. Click the button above to sign up to judge the cobb county elementary science fair. Known best for its fine art offerings, marietta art in the park gives individuals and families the chance to have all kinds of outdoor fun during labor day weekend.

Tour over 200 fully staged rvs, learn. The fair features live music, free attractions and shows, farm animals, flower shows, blue ribbon competitions, local entertainment, and delicious fair foods.