Rentals in Osceola County, Florida, United States. Osceola County is a county located in the central portion of the U.S. state of Florida. As of the 2010 census, the population was 268,685. Its county seat is Kissimmee. Osceola County is included in the Orlando-Kissimmee-Sanford, Fla. Metropolitan Statistical Area. Formed on May 12th, 1887 from portions of Orange County and Brevard County, Osceola County became Florida’s 40th county. Named after the famed Seminole leader, this area was a transportation hub in the late nineteenth century for riverboats and railroad. It readily began a cattle, sugar, and lumber-based economy.
VISIT OFFICIAL COUNTY SITE https://www.osceola.org