OX18 3 postcode sector in the OX18 district

OX18 3 is a sector of the OX18 district: every postcode that starts OX18 3. It has 256 postcodes in use, 5 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 OX18 3 sector, by flood risk

Map of every postcode in the OX18 3 sector, by flood risk Of the 256 postcodes in the OX18 3 sector that ONS places, 3 have a home or business at high risk and 253 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Carterton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A40 OX18 3AA: not on the flood risk listOX18 3AB: not on the flood risk listOX18 3AD: not on the flood risk listOX18 3AG: not on the flood risk listOX18 3AH: not on the flood risk listOX18 3AL: not on the flood risk listOX18 3AP: not on the flood risk listOX18 3AQ: not on the flood risk listOX18 3AR: not on the flood risk listOX18 3AT: not on the flood risk listOX18 3AU: not on the flood risk listOX18 3AX: not on the flood risk listOX18 3AZ: not on the flood risk listOX18 3BE: not on the flood risk listOX18 3BH: not on the flood risk listOX18 3BL: not on the flood risk listOX18 3BN: not on the flood risk listOX18 3BP: not on the flood risk listOX18 3BS: not on the flood risk listOX18 3BT: not on the flood risk listOX18 3BY: not on the flood risk listOX18 3BZ: not on the flood risk listOX18 3DA: not on the flood risk listOX18 3DB: not on the flood risk listOX18 3DD: not on the flood risk listOX18 3DH: not on the flood risk listOX18 3DJ: not on the flood risk listOX18 3DN: not on the flood risk listOX18 3DW: not on the flood risk listOX18 3EP: not on the flood risk listOX18 3ER: not on the flood risk listOX18 3ES: not on the flood risk listOX18 3ET: not on the flood risk listOX18 3EZ: not on the flood risk listOX18 3FE: not on the flood risk listOX18 3FF: not on the flood risk listOX18 3FG: not on the flood risk listOX18 3FN: not on the flood risk listOX18 3FP: not on the flood risk listOX18 3FQ: not on the flood risk listOX18 3FR: not on the flood risk listOX18 3FS: not on the flood risk listOX18 3FT: not on the flood risk listOX18 3FU: not on the flood risk listOX18 3FW: not on the flood risk listOX18 3FX: not on the flood risk listOX18 3FY: not on the flood risk listOX18 3FZ: not on the flood risk listOX18 3GB: not on the flood risk listOX18 3GD: not on the flood risk listOX18 3GE: not on the flood risk listOX18 3GF: not on the flood risk listOX18 3GG: not on the flood risk listOX18 3GH: not on the flood risk listOX18 3GJ: not on the flood risk listOX18 3GL: not on the flood risk listOX18 3GN: not on the flood risk listOX18 3GP: not on the flood risk listOX18 3GQ: not on the flood risk listOX18 3GR: not on the flood risk listOX18 3GS: not on the flood risk listOX18 3GT: not on the flood risk listOX18 3GU: not on the flood risk listOX18 3GW: not on the flood risk listOX18 3GX: not on the flood risk listOX18 3GY: not on the flood risk listOX18 3GZ: not on the flood risk listOX18 3HB: not on the flood risk listOX18 3HD: not on the flood risk listOX18 3HE: not on the flood risk listOX18 3HF: not on the flood risk listOX18 3HG: not on the flood risk listOX18 3HH: not on the flood risk listOX18 3HJ: not on the flood risk listOX18 3HL: not on the flood risk listOX18 3HN: not on the flood risk listOX18 3HP: not on the flood risk listOX18 3HQ: not on the flood risk listOX18 3HR: not on the flood risk listOX18 3HS: not on the flood risk listOX18 3HT: not on the flood risk listOX18 3HU: not on the flood risk listOX18 3HW: not on the flood risk listOX18 3HX: not on the flood risk listOX18 3HY: not on the flood risk listOX18 3HZ: not on the flood risk listOX18 3JA: not on the flood risk listOX18 3JB: not on the flood risk listOX18 3JD: not on the flood risk listOX18 3JF: not on the flood risk listOX18 3JG: not on the flood risk listOX18 3JH: not on the flood risk listOX18 3JL: not on the flood risk listOX18 3JN: not on the flood risk listOX18 3JP: not on the flood risk listOX18 3JR: not on the flood risk listOX18 3JS: not on the flood risk listOX18 3JT: not on the flood risk listOX18 3JU: not on the flood risk listOX18 3JW: not on the flood risk listOX18 3JX: not on the flood risk listOX18 3JY: not on the flood risk listOX18 3JZ: not on the flood risk listOX18 3LA: not on the flood risk listOX18 3LB: not on the flood risk listOX18 3LD: not on the flood risk listOX18 3LE: not on the flood risk listOX18 3LF: not on the flood risk listOX18 3LG: not on the flood risk listOX18 3LH: not on the flood risk listOX18 3LJ: not on the flood risk listOX18 3LL: not on the flood risk listOX18 3LN: not on the flood risk listOX18 3LP: not on the flood risk listOX18 3LQ: not on the flood risk listOX18 3LR: not on the flood risk listOX18 3LS: not on the flood risk listOX18 3LT: not on the flood risk listOX18 3LU: not on the flood risk listOX18 3LW: not on the flood risk listOX18 3LZ: not on the flood risk listOX18 3NA: not on the flood risk listOX18 3NB: not on the flood risk listOX18 3ND: not on the flood risk listOX18 3NE: not on the flood risk listOX18 3NF: not on the flood risk listOX18 3NG: not on the flood risk listOX18 3NH: not on the flood risk listOX18 3NL: not on the flood risk listOX18 3NN: not on the flood risk listOX18 3NP: not on the flood risk listOX18 3NQ: not on the flood risk listOX18 3NR: not on the flood risk listOX18 3NS: not on the flood risk listOX18 3NT: not on the flood risk listOX18 3NU: not on the flood risk listOX18 3NW: not on the flood risk listOX18 3NX: not on the flood risk listOX18 3NY: not on the flood risk listOX18 3NZ: not on the flood risk listOX18 3PA: not on the flood risk listOX18 3PB: not on the flood risk listOX18 3PD: not on the flood risk listOX18 3PF: not on the flood risk listOX18 3PG: not on the flood risk listOX18 3PH: not on the flood risk listOX18 3PJ: not on the flood risk listOX18 3PL: not on the flood risk listOX18 3PN: not on the flood risk listOX18 3PP: not on the flood risk listOX18 3PQ: not on the flood risk listOX18 3PR: not on the flood risk listOX18 3PS: not on the flood risk listOX18 3PT: not on the flood risk listOX18 3PU: not on the flood risk listOX18 3PW: not on the flood risk listOX18 3PX: not on the flood risk listOX18 3PZ: not on the flood risk listOX18 3QB: not on the flood risk listOX18 3QD: not on the flood risk listOX18 3QE: not on the flood risk listOX18 3QF: not on the flood risk listOX18 3QH: not on the flood risk listOX18 3QL: not on the flood risk listOX18 3QN: not on the flood risk listOX18 3QP: not on the flood risk listOX18 3QQ: not on the flood risk listOX18 3QR: not on the flood risk listOX18 3QS: not on the flood risk listOX18 3QT: not on the flood risk listOX18 3QU: not on the flood risk listOX18 3QW: not on the flood risk listOX18 3QX: not on the flood risk listOX18 3QY: not on the flood risk listOX18 3QZ: not on the flood risk listOX18 3RA: not on the flood risk listOX18 3RB: not on the flood risk listOX18 3RD: not on the flood risk listOX18 3RE: not on the flood risk listOX18 3RF: not on the flood risk listOX18 3RG: not on the flood risk listOX18 3RH: not on the flood risk listOX18 3RJ: not on the flood risk listOX18 3RL: not on the flood risk listOX18 3RN: not on the flood risk listOX18 3RP: not on the flood risk listOX18 3RQ: not on the flood risk listOX18 3RR: not on the flood risk listOX18 3RT: not on the flood risk listOX18 3RW: not on the flood risk listOX18 3RX: not on the flood risk listOX18 3RY: not on the flood risk listOX18 3SA: not on the flood risk listOX18 3SB: not on the flood risk listOX18 3SD: not on the flood risk listOX18 3SE: not on the flood risk listOX18 3SF: not on the flood risk listOX18 3SG: not on the flood risk listOX18 3SH: not on the flood risk listOX18 3SJ: not on the flood risk listOX18 3SN: not on the flood risk listOX18 3SP: not on the flood risk listOX18 3SQ: not on the flood risk listOX18 3SU: not on the flood risk listOX18 3SW: not on the flood risk listOX18 3SX: not on the flood risk listOX18 3SY: not on the flood risk listOX18 3SZ: not on the flood risk listOX18 3TA: not on the flood risk listOX18 3TB: not on the flood risk listOX18 3TD: not on the flood risk listOX18 3TT: not on the flood risk listOX18 3UG: not on the flood risk listOX18 3UJ: not on the flood risk listOX18 3UL: not on the flood risk listOX18 3UQ: not on the flood risk listOX18 3UR: not on the flood risk listOX18 3US: not on the flood risk listOX18 3UT: not on the flood risk listOX18 3UU: not on the flood risk listOX18 3UX: not on the flood risk listOX18 3UY: not on the flood risk listOX18 3UZ: not on the flood risk listOX18 3WN: not on the flood risk listOX18 3WX: not on the flood risk listOX18 3XF: not on the flood risk listOX18 3XG: not on the flood risk listOX18 3XH: not on the flood risk listOX18 3XL: not on the flood risk listOX18 3XN: not on the flood risk listOX18 3XP: not on the flood risk listOX18 3XQ: not on the flood risk listOX18 3XR: not on the flood risk listOX18 3XT: not on the flood risk listOX18 3XU: not on the flood risk listOX18 3XW: not on the flood risk listOX18 3XX: not on the flood risk listOX18 3XY: not on the flood risk listOX18 3YB: not on the flood risk listOX18 3YD: not on the flood risk listOX18 3YE: not on the flood risk listOX18 3YF: not on the flood risk listOX18 3YG: not on the flood risk listOX18 3YH: not on the flood risk listOX18 3YJ: not on the flood risk listOX18 3YL: not on the flood risk listOX18 3YN: not on the flood risk listOX18 3YQ: not on the flood risk listOX18 3JJ: high flood riskOX18 3LY: high flood riskOX18 3QA: high flood risk Carterton Map of every postcode in the OX18 3 sector, by flood risk Of the 256 postcodes in the OX18 3 sector that ONS places, 3 have a home or business at high risk and 253 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Carterton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A40 Carterton
  • A home or business at high risk: 3
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 253

Of the 256 postcodes in the OX18 3 sector that ONS places, 3 have a home or business at high risk and 253 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.

OX18 3QA2 at high riskOX18 3JJ1 at high riskOX18 3LY1 at high risk

Further out, not drawn

This postcode lies well apart from the rest, so the map is drawn without it to show the rest closer; it is in every count.

OX18 3NJ

What do homes sell for in OX18 3?

Homes in OX18 3 sold for a typical £350,000 in the 12 months to August 2026, across 81 sales, up 6.1% on the 12 months before, HM Land Registry's figures show.

£350,000 typical price, the 12 months to August 2026
£330,000 12 months to August 2025
▲ up 6.1% on the 12 months before
  • Detached £415,439 38 sales
  • Semi-detached £330,000 25 sales
  • Terraced £310,000 12 sales
  • Flat or maisonette £177,000 6 sales

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value at the postcodes that start OX18 3. 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

Postcodes in OX18 3

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

OX18 3AAOX18 3ABOX18 3ADOX18 3AGOX18 3AHOX18 3ALOX18 3APOX18 3AQOX18 3AROX18 3ATOX18 3AUOX18 3AXOX18 3AZOX18 3BEOX18 3BHOX18 3BLOX18 3BNOX18 3BPOX18 3BSOX18 3BTOX18 3BYOX18 3BZOX18 3DAOX18 3DBOX18 3DDOX18 3DHOX18 3DJOX18 3DNOX18 3DWOX18 3EPOX18 3EROX18 3ESOX18 3ETOX18 3EZOX18 3FEOX18 3FFOX18 3FGOX18 3FNOX18 3FPOX18 3FQOX18 3FROX18 3FSOX18 3FTOX18 3FUOX18 3FWOX18 3FXOX18 3FYOX18 3FZOX18 3GBOX18 3GDOX18 3GEOX18 3GFOX18 3GGOX18 3GHOX18 3GJOX18 3GLOX18 3GNOX18 3GPOX18 3GQOX18 3GROX18 3GSOX18 3GTOX18 3GUOX18 3GWOX18 3GXOX18 3GYOX18 3GZOX18 3HAOX18 3HBOX18 3HDOX18 3HEOX18 3HFOX18 3HGOX18 3HHOX18 3HJOX18 3HLOX18 3HNOX18 3HPOX18 3HQOX18 3HROX18 3HSOX18 3HTOX18 3HUOX18 3HWOX18 3HXOX18 3HYOX18 3HZOX18 3JAOX18 3JBOX18 3JDOX18 3JFOX18 3JGOX18 3JHOX18 3JJOX18 3JLOX18 3JNOX18 3JPOX18 3JQOX18 3JROX18 3JSOX18 3JTOX18 3JUOX18 3JWOX18 3JXOX18 3JYOX18 3JZOX18 3LAOX18 3LBOX18 3LDOX18 3LEOX18 3LFOX18 3LGOX18 3LHOX18 3LJOX18 3LLOX18 3LNOX18 3LPOX18 3LQOX18 3LROX18 3LSOX18 3LTOX18 3LUOX18 3LWOX18 3LXOX18 3LYOX18 3LZOX18 3NAOX18 3NBOX18 3NDOX18 3NEOX18 3NFOX18 3NGOX18 3NHOX18 3NJOX18 3NLOX18 3NNOX18 3NPOX18 3NQOX18 3NROX18 3NSOX18 3NTOX18 3NUOX18 3NWOX18 3NXOX18 3NYOX18 3NZOX18 3PAOX18 3PBOX18 3PDOX18 3PFOX18 3PGOX18 3PHOX18 3PJOX18 3PLOX18 3PNOX18 3PPOX18 3PQOX18 3PROX18 3PSOX18 3PTOX18 3PUOX18 3PWOX18 3PXOX18 3PZOX18 3QAOX18 3QBOX18 3QDOX18 3QEOX18 3QFOX18 3QHOX18 3QLOX18 3QNOX18 3QPOX18 3QQOX18 3QROX18 3QSOX18 3QTOX18 3QUOX18 3QWOX18 3QXOX18 3QYOX18 3QZOX18 3RAOX18 3RBOX18 3RDOX18 3REOX18 3RFOX18 3RGOX18 3RHOX18 3RJOX18 3RLOX18 3RNOX18 3RPOX18 3RQOX18 3RROX18 3RTOX18 3RWOX18 3RXOX18 3RYOX18 3SAOX18 3SBOX18 3SDOX18 3SEOX18 3SFOX18 3SGOX18 3SHOX18 3SJOX18 3SNOX18 3SPOX18 3SQOX18 3SUOX18 3SWOX18 3SXOX18 3SYOX18 3SZOX18 3TAOX18 3TBOX18 3TDOX18 3TTOX18 3UGOX18 3UJOX18 3ULOX18 3UQOX18 3UROX18 3USOX18 3UTOX18 3UUOX18 3UXOX18 3UYOX18 3UZOX18 3WNOX18 3WXOX18 3XFOX18 3XGOX18 3XHOX18 3XLOX18 3XNOX18 3XPOX18 3XQOX18 3XROX18 3XTOX18 3XUOX18 3XWOX18 3XXOX18 3XYOX18 3XZOX18 3YBOX18 3YDOX18 3YEOX18 3YFOX18 3YGOX18 3YHOX18 3YJOX18 3YLOX18 3YNOX18 3YQ

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed. See all our data sources

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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