The Osceola County Courthouse is located at 3 Courthouse Square, Kissimmee, FL 34741; phone: 407‑742‑3500/
Organized in 1887, Osceola was carved from parts of Brevard and Orange becoming Florida's 40th county.
Osceola County derives its name from Billy Powell, son of British trader William Powell and his Creek wife Polly Copinger. Born in Alabama in 1804, Powell adopted the name Osceola, which means "black drink crier," at a tribal ceremony around 1820. After leading several small but successful raids against the Army over the next decade, Osceola was captured on Dec. 31, 1837 and died one month later at Fort Moultrie in South Carolina.