Osceola County was created in 1887. Osceola County is a 1,506 square mile area that serves as the south/central boundary of the Central Florida Region and the Greater Metropolitan Area. The City of Kissimmee, the County Seat, is 18 miles due south of Orlando. Osceola’s only other incorporated City, St. Cloud, is 9 miles east of Kissimmee, and approximately 45 miles west of the City of Melbourne on the Atlantic Coast.