Kettle Island is an unincorporated community and coal town in Bell County, Kentucky, United States. Kettle Island is located on Kentucky Route 1630 near Kentucky Route 221, 5.35 miles east-northeast of Pineville. Kettle Island has a post office with ZIP code 40958, which opened on March 15, 1912. The community also had a station on the Louisville and Nashvil…Kettle Island is an unincorporated community and coal town in Bell County, Kentucky, United States. Kettle Island is located on Kentucky Route 1630 near Kentucky Route 221, 5.35 miles east-northeast of Pineville. Kettle Island has a post office with ZIP code 40958, which opened on March 15, 1912. The community also had a station on the Louisville and Nashville Railroad.