Chadds Ford is a census-designated place in Delaware and Chester counties, Pennsylvania, United States, comprising the unincorporated communities of Chadds Ford and Chadds Ford Knoll. It was first listed as a CDP prior to the 2020 census. The CDP is in westernmost Delaware County and southeastern Chester County, in the northwestern part of Chadds Ford Township, the eastern part of Pennsbury Township, and the southern corner of Birmingham Township.