Cliffdale is an unincorporated community in Calhoun County, Illinois, United States.

Cliffdale is located along Illinois Route 100 south of Pearl.

Cliffdale was incorporated during the late 1800s when a post office was set up in it.

The post office closed in 1914 and Cliffdale was unincorporated.

This Calhoun County, Illinois location article is a stub.