Kissimmee is the largest city and county seat of Osceola County, Florida, United States. As of the 2020 census, the population was 79,226. It is a principal city of the Orlando-Kissimmee-Sanford, Florida, Metropolitan Statistical Area. The Census Bureau defines an urban area with Kissimmee as the principal city, which is separated from the Orlando urban area. The Kissimmee–St. Cloud, Florida urban…