Blacklick Estates is a census-designated place (CDP) in Franklin County, Ohio, United States: partly in Madison Township and partly in Truro Township.

Three hundred homes in Blacklick Estates were flooded on September 14, 1979, when Blacklick Creek topped a levee due to heavy rains from Hurricane Frederic.

It is bordered to the north, east, and south by the city of Columbus, and to the west by unincorporated land in Madison Township.

Ohio State Route 317 (S. Hamilton Road) forms the western edge of the CDP.

In 2007, Blacklick Estates was listed as the second most affordable place to live in the U.S. by Money on CNNMoney.com.