Highlands County is a county located in the Florida Heartland region of the U.S. state of Florida. As of the 2020 census, the population was 101,235. Its county seat is Sebring. Highlands County comprises the Sebring-Avon Park, FL Metropolitan Statistical Area. History Highlands County was created in 1921 along with Charlotte, Glades, and Hardee, when they were separated from DeSoto County. It was named for the terrain of the county. It boasted the fifth-oldest population in America in 2012. Geography According to the U.S. Census Bureau, the county has a total area of , of which is land and (8.1%) is water. In area, it is the 14th largest county in Florida. Highlands County is bounded on the east by the Kissimmee River. Lake Istokpoga, the largest lake in the county, is connected to the Kissimmee River by two canals; the Istokpoga canal, and the C41 (outflow) canal. Adjacent counties Osceola County, Florida - northeast Okeechobee County, Florida - east Glades County, Florida - south Charlotte County, Florida - southwest DeSoto County, Florida - west Hardee County, Florida - west Polk County, Florida - north National protected area Lake Wales Ridge National Wildlife Refuge (part) Demographics As of the 2020 United States census, there were 101,235 people, 42,721 households, and 27,169 families residing in the county. As of 2015, there were 99,491 people and 39,931 households living in the county. The population density was 97.2 people per square mile. The racial makeup of the county was 85.8% White, 10.4% Black or African American, 0.7% Native American, 1.5% Asian, 0.1% Pacific Islander, and 1.6% from two or more races. 18.2% of the population were Hispanic or Latino of any race. 51.3% of the entire population are female. The median household income was $35,560 with 20.1% of the population being below the poverty level from 2009 to 2013. The poverty line for Florida was $11,490 in 2013. As of the census of 2000, there were 87,366 people, 37,471 households, and 25,780 families living in the county. The population density was 85.00 people per square mile (32.82/km2). There were 48,846 housing units at an average density of . The racial makeup of the county was 83.47% White, 9.33% Black or African American, 0.44% Native American, 1.05% Asian, 0.03% Pacific Islander, 4.14% from other races, and 1.53% from two or more races. 12.07% of the population were Hispanic or Latino of any race. In