Bowling Green is a city in Warren County, Kentucky, United States, in the Upland South, and its county seat. Its population was 72,294 as of th…Bowling Green is a city in Warren County, Kentucky, United States, in the Upland South, and its county seat. Its population was 72,294 as of the 2020 census, making it the third-most populous city in the state, after Louisville and Lexington. The Bowling Green metropolitan area is the fourth-largest in the state and had a population of 179,639 in 2020.