Dunbar, KentuckyDunbar is an unincorporated community in Butler [County, Kentucky|Butler County], Kentucky, United States.HistoryThe name of the community is a blend of those of two local families: the Dunns and the Barrows.GeographyThe community is located in west-central Butler County along Kentucky Route 70 near its junction with KY 1117 about west-southwest of Morgantown. It is also directly served by the Exit 27 interchange of Interstate 165 on the west side of Morgantown.Post officeDunbar had a post office with ZIP code 42219. The post office operated from its establishment on April 19, 1898, until its closing on May 13, 2022.Points of interestDunbar is home to the Cedar Ridge Speedway.