Lebanon is a home rule-class city in Marion County, Kentucky, in the United States. The population was 6,331 at the 2010 census. It is the seat of its county. Lebanon is located in central Kentucky, southeast of Louisville. A national cemetery is located nearby.Lebanon is renowned for its Ham Days Festival and Tractor Show which is held during the last weekend of September. In the 1960s and early 1970s, it was known as an entertainment hotspot, as nationally known acts appeared at Club 68 and the Golden Horseshoe nightclubs.