Mount Olivet is a city in and the county seat of Robertson County, Kentucky, United States. The population was 289 at the 2000 census. The population has declined from 442 in 1970, 346 in 1980, and 384 in 1990. Mount Olivet was founded around 1820 incorporated on December 27, 1851 and was named after the Mount of Olives, a biblical reference. It is centered around the junction of US 62 and Kentucky Route 165.