White Castle has a presence in several states across the United States, primarily concentrated in the Midwest and Northeast. While it may not be available in every state, White Castle restaurants can commonly be found in states such as Illinois, Indiana, Ohio, New York, and New Jersey. Additionally, there are select locations in states like Michigan and Kentucky. The chain is known for its iconic sliders and has cultivated a loyal following, which has led to discussions about potential expansion into new areas over the years. If a customer is looking to visit a specific location or find out more about where White Castle operates, it might be helpful to check the official website for the most current information on locations and availability.