Belleview is an unincorporated community and census-designated place in Boone County, Kentucky, United States. The population was 308 as of the 2020 Census, down from 343 from the 2010 census. Belleview is located in western Boone County along the Ohio River, 24 miles southwest of downtown Cincinnati. Kentucky Route 18 runs east from Belleview 7 …Belleview is an unincorporated community and census-designated place in Boone County, Kentucky, United States. The population was 308 as of the 2020 Census, down from 343 from the 2010 census. Belleview is located in western Boone County along the Ohio River, 24 miles southwest of downtown Cincinnati. Kentucky Route 18 runs east from Belleview 7 miles to Burlington and 13 miles to Florence.