The OX postcode area, also known as the Oxford postcode area, is a group of postcode districts in the United Kingdom covering central and southern Oxfordshire, parts of north‑western Buckinghamshire, and a small portion of western Warwickshire. It is designated by the outward code "OX".
Geographic coverage
The area includes the city of Oxford and surrounding towns such as Banbury, Bicester, Abingdon, Didcot, Thame, Witney, and Wallingford. It also serves smaller villages and rural locations within the aforementioned counties.
Postcode districts
The OX postcode area is divided into the following postcode districts:
- OX1 – Central Oxford
- OX2 – Oxford suburbs and surrounding villages (e.g., Headington, Summertown)
- OX3 – Southern Oxford suburbs (e.g., Cowley, Rose Hill)
- OX4 – Western Oxford suburbs (e.g., Botley, Cumnor)
- OX5 – Areas north of Oxford, including Oxfordshire villages such as Wootton and Wolvercote
- OX7 – Banbury and surrounding villages
- OX9 – Bicester and surrounding areas
- OX10 – Brackley (partly in Northamptonshire)
- OX11 – St. Mary’s, Oxford (used for PO boxes)
- OX12 – Cowley, Oxford (primarily for business addresses)
- OX14 – Abingdon and surrounding villages
- OX15 – Didcot and surrounding villages
- OX16 – Wallingford and surrounding villages
- OX17 – Wantage and surrounding villages
- OX18 – Chipping Norton and surrounding villages
- OX20 – Thame and surrounding villages
- OX25 – Watlington and surrounding villages
- OX26 – Bampton and surrounding villages
(Additional district numbers are allocated for specific purposes such as large organisations, PO boxes, or special delivery points.)
Administration
Postcodes in the OX area are managed by the Royal Mail, which assigns them for the purposes of mail sorting and delivery. The area is serviced by several main mail centres, with the primary sorting office located in Oxford.
Historical development
The OX postcode area was introduced as part of the national alphanumeric postcode system implemented by the Royal Mail in the late 1970s. The allocation of districts generally follows historic town boundaries and patterns of population density, with central Oxford receiving the earliest and lowest-numbered districts (OX1–OX5). Subsequent expansion of the system incorporated surrounding towns and rural districts as the need for more granular sorting arose.
Usage
Beyond mail delivery, OX postcodes are commonly used for geographic reference in demographics, planning, navigation, and service provision (e.g., insurance rating, logistics, and location‑based services).
Reference sources
- Royal Mail Address Management Guide (latest edition)
- Office for National Statistics (ONS) geographic lookup tables
- Local government boundary data for Oxfordshire, Buckinghamshire, and Warwickshire
All information reflects publicly available data from authoritative UK postal and governmental sources.
