Kissimmee is a city in Osceola County, Florida, United States. As of 2006, the population recorded by the U.S. Census Bureau is 60,894. It is the county seat of Osceola County. Kissimmee is a Principal City of the Orlando-Kissimmee, Florida, Metropolitan Statistical Area, which the census bureau estimated had a 2006 population of 1,984,855. Kissimmee apartments for rent comparison page shows most up to date rent information on Kissimmee apartments and houses. Rent information is obtained from multiple rental sources but we cannot guarantee their accuracy.