Loughman is a census-designated place (CDP) in the north-east corner of Polk County, Florida, United States, near the Osceola county line. The population was 1,385 at the 2000 census.According to the United States Census Bureau, the CDP has a total area of 3.8 square miles (9.8 km2), of which, 3.7 square miles (9.6 km2) of it is land and 0.1 square miles (0.26 km2) of it (1.33%) is water.
Loughman was settled shortly after the South Florida Railroad reached the area in 1883. The place was originally named Lake Locke.Loughman was on the route of the Dixie Highway, which ran parallel to the line of US 17/92 and is now Old Kissimmee Road (Old Tampa Highway north of the Osceola County line). A monument dated 1930 marks the Polk county line. Nearby, some of the brick-paved highway remains.