OX25 4 postcode sector in the OX25 district

OX25 4 is a sector of the OX25 district: every postcode that starts OX25 4. It has 71 postcodes in use, 2 of them large-user postcodes. A large-user postcode is one Royal Mail gives to a single address that gets a lot of mail.

Not sure what a sector is? UK postcode format explained.

Every postcode in the OX25 4 sector, by flood risk

Map of every postcode in the OX25 4 sector, by flood risk Of the 71 postcodes in the OX25 4 sector that ONS places, 1 have a home or business at high risk, 2 are at medium risk at worst and 68 are not on the Environment Agency's at-risk list. Places named: Bicester, Upper Heyford. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A4260A41 OX25 4AA: not on the flood risk listOX25 4AB: not on the flood risk listOX25 4AD: not on the flood risk listOX25 4AE: not on the flood risk listOX25 4AF: not on the flood risk listOX25 4AG: not on the flood risk listOX25 4AH: not on the flood risk listOX25 4AJ: not on the flood risk listOX25 4AL: not on the flood risk listOX25 4AN: not on the flood risk listOX25 4AP: not on the flood risk listOX25 4AQ: not on the flood risk listOX25 4AR: not on the flood risk listOX25 4AS: not on the flood risk listOX25 4AU: not on the flood risk listOX25 4AX: not on the flood risk listOX25 4JE: not on the flood risk listOX25 4JF: not on the flood risk listOX25 4JG: not on the flood risk listOX25 4NB: not on the flood risk listOX25 4ND: not on the flood risk listOX25 4NF: not on the flood risk listOX25 4QL: not on the flood risk listOX25 4QN: not on the flood risk listOX25 4QP: not on the flood risk listOX25 4QR: not on the flood risk listOX25 4QS: not on the flood risk listOX25 4QT: not on the flood risk listOX25 4QU: not on the flood risk listOX25 4QX: not on the flood risk listOX25 4QY: not on the flood risk listOX25 4QZ: not on the flood risk listOX25 4RA: not on the flood risk listOX25 4RB: not on the flood risk listOX25 4RD: not on the flood risk listOX25 4RP: not on the flood risk listOX25 4RR: not on the flood risk listOX25 4RT: not on the flood risk listOX25 4RY: not on the flood risk listOX25 4RZ: not on the flood risk listOX25 4SA: not on the flood risk listOX25 4SB: not on the flood risk listOX25 4SD: not on the flood risk listOX25 4SE: not on the flood risk listOX25 4SF: not on the flood risk listOX25 4SG: not on the flood risk listOX25 4SH: not on the flood risk listOX25 4SJ: not on the flood risk listOX25 4SL: not on the flood risk listOX25 4SN: not on the flood risk listOX25 4SP: not on the flood risk listOX25 4SQ: not on the flood risk listOX25 4SR: not on the flood risk listOX25 4SS: not on the flood risk listOX25 4SX: not on the flood risk listOX25 4TB: not on the flood risk listOX25 4TD: not on the flood risk listOX25 4TE: not on the flood risk listOX25 4YU: not on the flood risk listOX25 4SW: medium flood risk at worstOX25 4TA: medium flood risk at worstOX25 4NE: high flood risk BicesterUpper Heyford Map of every postcode in the OX25 4 sector, by flood risk Of the 71 postcodes in the OX25 4 sector that ONS places, 1 have a home or business at high risk, 2 are at medium risk at worst and 68 are not on the Environment Agency's at-risk list. Places named: Bicester, Upper Heyford. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. BicesterUpper Heyford
  • A home or business at high risk: 1
  • At medium risk at worst: 2
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 68

Of the 71 postcodes in the OX25 4 sector that ONS places, 1 have a home or business at high risk, 2 are at medium risk at worst and 68 are not on the Environment Agency's at-risk list.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The postcodes at high risk

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

What do homes sell for in OX25 4?

Homes in OX25 4 sold for a typical £547,500 in the 12 months to August 2026, across 14 sales, up 21.7% on the 12 months before, HM Land Registry's figures show.

£547,500 typical price, the 12 months to August 2026
£450,000 12 months to August 2025
▲ up 21.7% on the 12 months before
  • Detached £683,500 10 sales
  • Semi-detached 3 sales, too few to price
  • Terraced 1 sale, too few to price

Standard sales of homes at market value at the postcodes that start OX25 4. A typical price is the median, the middle sale, given from 5 sales or more.

How we work this out: house prices by postcode

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

What council am I in? The council, borough or local authority for a postcode, and the county council where there is one. What ward am I in? The ward for a postcode, with its council, constituency and parish.

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