Lower Heyford is a village and civil parish beside the River Cherwell in Oxfordshire, about 6 miles west of Bicester. The 2011 Census recorded the parish's population as 492. The parish measures about 1+1⁄2 miles east–west and about 2 miles north–south. It is bounded by the River Cherwell to the west, Aves ditch to the east, and field boundaries to the north and south. In 1959 the parish covered an area of 1,765 acres.