While the specific annual revenue for Kings Island (located in Mason, Ohio) is not always disclosed as a standalone figure, industry estimates for 2026 place its annual revenue in the range of $250 million to $500 million. As one of the flagship properties now under the merged Six Flags-Cedar Fair entity, the park is a massive profit generator for the company. Its revenue is driven by a high attendance volume—typically over 3.4 million visitors per year—along with robust "in-park" spending on food, merchandise, and premium "Fast Lane" passes. The park’s financial health is bolstered by its diverse lineup of 15 roller coasters and the inclusion of the 33-acre Soak City water park in the price of admission, which maximizes summer crowds. A significant portion of its annual income is also derived from seasonal events like "Halloween Haunt" and "Winterfest," which allow the park to generate revenue well into the fourth quarter. These figures highlight Kings Island's position as a top-tier regional theme park that consistently outperforms most other attractions in the Midwestern United States.