Smoothie King (SKFI) | 28,239 followers on LinkedIn. Smoothie King® is a privately held; Dallas-based company and the premier Smoothie Bar and Nutritional Lifestyle Center in the industry. Smoothie King® opened its first store in 1973 and started as the first franchised smoothie bar/health food store in the United States in 1989. Smoothie King® currently has more than 1,000 stores operating in 34 states, the Caymans, Trinidad and the Republic of Korea.