Milford Mills was a village in the Marsh Creek Valley of Chester County, Pennsylvania that was inundated by the construction of the Marsh Creek Dam in 1972. Milford Mills was one of several farming villages settled by Welsh, Scots-Irish and English in the first quarter of the 18th century in Upper Uwchlan Township. Like nearby Lyndell and Dorlan, Milford Mills grew during the 19th century as paper and textile manufacturing flourished. Bypassed by large-scale industry in the late 19th century, the region reverted to an agricultural economy until after World War II when the Pennsylvania Turnpike brought suburban development to northwestern Chester County.