 St. Mary's Catholic Church, established in the late 19th century, was renovated in the early 1950s and was home to St. Mary's Catholic School, which closed in the late 1960s.Dunnington is located at , on the border of Parish Grove Township and Hickory Grove Township, two miles east of the border with Illinois.Indiana State Road 71 passes north through the town, and a small creek named Kult Ditch flows northwest toward Mud Creek.