Steeple Aston is a village and civil parish on the edge of the Cherwell Valley, in the Cherwell District of Oxfordshire, England, about 12 miles (19 km) north of Oxford, 7 miles (11 km) west of Bicester, and 10 miles (16 km) south of Banbury. The 2011 Census recorded the parish population as 947. The village is 108 metres (354 ft) above sea level. The River Cherwell and Oxford Canal pass 1 mile (2 km) east of the village. The river forms part of the eastern boundary of the parish. The parish's southern boundary, 1⁄2 mile (800 m) south of the village, also forms part of Cherwell District's boundary with West Oxfordshire.