Bush is an unincorporated community in Laurel County, Kentucky, United States. Bush is located on Kentucky Route 80 in eastern Laurel County, 12 miles east-southeast of London. Bush had a post office, which opened on February 18, 1840, and closed …Bush is an unincorporated community in Laurel County, Kentucky, United States. Bush is located on Kentucky Route 80 in eastern Laurel County, 12 miles east-southeast of London. Bush had a post office, which opened on February 18, 1840, and closed on January 22, 2011; it still has its own ZIP code, 40724.