Clay County Fair, self-dubbed "The World's Greatest County Fair," is a nine-day Iowa institution in Spencer that draws nearly 300,000 attendees annually. The 2024 edition featured over 10,000 competition entries, 790 4-H and FFA exhibitors, 450-plus vendors, and a record $3.3 million spent on food and carnival rides. The grandstand alone pulls in over 15,000 attendees, with the broader crowd spanning families, agriculture enthusiasts, and rural consumers across the Midwest, backed by a social following of 52,000-plus. Sponsors activate across grounds, buildings, rides, and themed days, from Kids Day to Senior Day, with top tiers including admission tickets, parking, signage, and newsletter and social exposure. It's a turnkey, multi-generational entry into the rural heartland economy.