Pine Grove Mills is an unincorporated community, village, and census-designated place (CDP) in Ferguson Township, Centre County, Pennsylvania, United States.

According to the United States Census Bureau, the CDP has a total area of 2.51 square miles (6.49 km2), all land.

Thomas Ferguson, who, in 1791, bought 321 acres (1.30 km2) of land for 300 pounds in gold and silver coins, is credited with founding Pine Grove Mills.

In 1800, he dammed Slab Cabin Run and built the first of the mills that would eventually give the town its name.

According to local tradition, a grove of pine trees separating the sawmill from the gristmill along the run provided the rest of the name.

[9] In June 2018, a farmers market began in the parking lot of St Paul Lutheran Church.

Early in 2020, the Board of Supervisors voted to create a standing committee to provide advice and recommendations on the implementation of the plan.