SN4 9 postcode sector in the SN4 district

SN4 9 is a sector of the SN4 district: every postcode that starts SN4 9. It has 184 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 SN4 9 sector, by flood risk

Map of every postcode in the SN4 9 sector, by flood risk Of the 184 postcodes in the SN4 9 sector that ONS places, 1 have a home or business at high risk, 6 are at medium risk at worst, 7 are at low risk at worst and 170 are not on the Environment Agency's at-risk list. Places named: Royal Wootton Bassett, Wroughton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. A4361M4A3102 SN4 9AA: not on the flood risk listSN4 9AB: not on the flood risk listSN4 9AD: not on the flood risk listSN4 9AE: not on the flood risk listSN4 9AF: not on the flood risk listSN4 9AH: not on the flood risk listSN4 9AJ: not on the flood risk listSN4 9AL: not on the flood risk listSN4 9AN: not on the flood risk listSN4 9AQ: not on the flood risk listSN4 9AS: not on the flood risk listSN4 9AU: not on the flood risk listSN4 9AW: not on the flood risk listSN4 9AX: not on the flood risk listSN4 9AY: not on the flood risk listSN4 9BA: not on the flood risk listSN4 9BB: not on the flood risk listSN4 9BD: not on the flood risk listSN4 9BE: not on the flood risk listSN4 9BH: not on the flood risk listSN4 9BJ: not on the flood risk listSN4 9BN: not on the flood risk listSN4 9BP: not on the flood risk listSN4 9BQ: not on the flood risk listSN4 9BS: not on the flood risk listSN4 9BU: not on the flood risk listSN4 9BX: not on the flood risk listSN4 9BY: not on the flood risk listSN4 9BZ: not on the flood risk listSN4 9DD: not on the flood risk listSN4 9DF: not on the flood risk listSN4 9DG: not on the flood risk listSN4 9DH: not on the flood risk listSN4 9DJ: not on the flood risk listSN4 9DL: not on the flood risk listSN4 9DN: not on the flood risk listSN4 9DP: not on the flood risk listSN4 9DR: not on the flood risk listSN4 9DS: not on the flood risk listSN4 9DU: not on the flood risk listSN4 9DX: not on the flood risk listSN4 9DY: not on the flood risk listSN4 9DZ: not on the flood risk listSN4 9EA: not on the flood risk listSN4 9ED: not on the flood risk listSN4 9EE: not on the flood risk listSN4 9EG: not on the flood risk listSN4 9EJ: not on the flood risk listSN4 9EL: not on the flood risk listSN4 9EN: not on the flood risk listSN4 9EP: not on the flood risk listSN4 9ER: not on the flood risk listSN4 9ES: not on the flood risk listSN4 9ET: not on the flood risk listSN4 9EW: not on the flood risk listSN4 9EX: not on the flood risk listSN4 9EY: not on the flood risk listSN4 9EZ: not on the flood risk listSN4 9HG: not on the flood risk listSN4 9HH: not on the flood risk listSN4 9HJ: not on the flood risk listSN4 9HL: not on the flood risk listSN4 9HN: not on the flood risk listSN4 9HP: not on the flood risk listSN4 9HQ: not on the flood risk listSN4 9HT: not on the flood risk listSN4 9HU: not on the flood risk listSN4 9HW: not on the flood risk listSN4 9HY: not on the flood risk listSN4 9HZ: not on the flood risk listSN4 9JA: not on the flood risk listSN4 9JB: not on the flood risk listSN4 9JD: not on the flood risk listSN4 9JE: not on the flood risk listSN4 9JF: not on the flood risk listSN4 9JG: not on the flood risk listSN4 9JP: not on the flood risk listSN4 9JR: not on the flood risk listSN4 9JS: not on the flood risk listSN4 9JT: not on the flood risk listSN4 9JU: not on the flood risk listSN4 9JX: not on the flood risk listSN4 9JZ: not on the flood risk listSN4 9LA: not on the flood risk listSN4 9LB: not on the flood risk listSN4 9LD: not on the flood risk listSN4 9LE: not on the flood risk listSN4 9LF: not on the flood risk listSN4 9LJ: not on the flood risk listSN4 9LL: not on the flood risk listSN4 9LN: not on the flood risk listSN4 9LQ: not on the flood risk listSN4 9LR: not on the flood risk listSN4 9LS: not on the flood risk listSN4 9LT: not on the flood risk listSN4 9LU: not on the flood risk listSN4 9LX: not on the flood risk listSN4 9LY: not on the flood risk listSN4 9LZ: not on the flood risk listSN4 9NA: not on the flood risk listSN4 9NB: not on the flood risk listSN4 9ND: not on the flood risk listSN4 9NE: not on the flood risk listSN4 9NH: not on the flood risk listSN4 9NJ: not on the flood risk listSN4 9NL: not on the flood risk listSN4 9NN: not on the flood risk listSN4 9NP: not on the flood risk listSN4 9NQ: not on the flood risk listSN4 9NR: not on the flood risk listSN4 9NT: not on the flood risk listSN4 9NU: not on the flood risk listSN4 9NX: not on the flood risk listSN4 9PA: not on the flood risk listSN4 9PB: not on the flood risk listSN4 9PD: not on the flood risk listSN4 9PE: not on the flood risk listSN4 9PF: not on the flood risk listSN4 9PG: not on the flood risk listSN4 9PH: not on the flood risk listSN4 9PJ: not on the flood risk listSN4 9PL: not on the flood risk listSN4 9PN: not on the flood risk listSN4 9PP: not on the flood risk listSN4 9PQ: not on the flood risk listSN4 9PR: not on the flood risk listSN4 9PS: not on the flood risk listSN4 9PT: not on the flood risk listSN4 9PU: not on the flood risk listSN4 9PW: not on the flood risk listSN4 9PX: not on the flood risk listSN4 9PY: not on the flood risk listSN4 9QB: not on the flood risk listSN4 9QD: not on the flood risk listSN4 9QE: not on the flood risk listSN4 9QF: not on the flood risk listSN4 9QG: not on the flood risk listSN4 9QL: not on the flood risk listSN4 9QN: not on the flood risk listSN4 9QP: not on the flood risk listSN4 9QS: not on the flood risk listSN4 9QT: not on the flood risk listSN4 9QU: not on the flood risk listSN4 9QW: not on the flood risk listSN4 9RH: not on the flood risk listSN4 9SB: not on the flood risk listSN4 9SD: not on the flood risk listSN4 9SE: not on the flood risk listSN4 9SF: not on the flood risk listSN4 9SG: not on the flood risk listSN4 9SQ: not on the flood risk listSN4 9AP: low flood risk at worstSN4 9AT: low flood risk at worstSN4 9DT: low flood risk at worstSN4 9HE: low flood risk at worstSN4 9LW: low flood risk at worstSN4 9NF: low flood risk at worstSN4 9NW: low flood risk at worstSN4 9AR: medium flood risk at worstSN4 9AZ: medium flood risk at worstSN4 9DE: medium flood risk at worstSN4 9JN: medium flood risk at worstSN4 9JW: medium flood risk at worstSN4 9QJ: medium flood risk at worstSN4 9DA: high flood risk Royal Wootton BassettWroughton Map of every postcode in the SN4 9 sector, by flood risk Of the 184 postcodes in the SN4 9 sector that ONS places, 1 have a home or business at high risk, 6 are at medium risk at worst, 7 are at low risk at worst and 170 are not on the Environment Agency's at-risk list. Places named: Royal Wootton Bassett, Wroughton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. Royal Wootton BassettWroughton
  • A home or business at high risk: 1
  • At medium risk at worst: 6
  • At low risk at worst: 7
  • At very low risk only: 0
  • Not on the at-risk list: 170

Of the 184 postcodes in the SN4 9 sector that ONS places, 1 have a home or business at high risk, 6 are at medium risk at worst, 7 are at low risk at worst and 170 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.

SN4 9DA2 at high risk

What do homes sell for in SN4 9?

Homes in SN4 9 sold for a typical £340,000 in the 12 months to August 2026, across 88 sales, no change on the 12 months before, HM Land Registry's figures show.

£340,000 typical price, the 12 months to August 2026
£340,000 12 months to August 2025
■ no change on the 12 months before
  • Detached £508,500 25 sales
  • Semi-detached £335,000 41 sales
  • Terraced £305,000 16 sales
  • Flat or maisonette £184,000 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 SN4 9. 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 SN4 9

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.

SN4 9AASN4 9ABSN4 9ADSN4 9AESN4 9AFSN4 9AGSN4 9AHSN4 9AJSN4 9ALSN4 9ANSN4 9APSN4 9AQSN4 9ARSN4 9ASSN4 9ATSN4 9AUSN4 9AWSN4 9AXSN4 9AYSN4 9AZSN4 9BASN4 9BBSN4 9BDSN4 9BESN4 9BGSN4 9BHSN4 9BJSN4 9BNSN4 9BPSN4 9BQSN4 9BSSN4 9BUSN4 9BWSN4 9BXSN4 9BYSN4 9BZSN4 9DASN4 9DDSN4 9DESN4 9DFSN4 9DGSN4 9DHSN4 9DJSN4 9DLSN4 9DNSN4 9DPSN4 9DQSN4 9DRSN4 9DSSN4 9DTSN4 9DUSN4 9DWSN4 9DXSN4 9DYSN4 9DZSN4 9EASN4 9EBSN4 9EDSN4 9EESN4 9EFSN4 9EGSN4 9EHSN4 9EJSN4 9ELSN4 9ENSN4 9EPSN4 9EQSN4 9ERSN4 9ESSN4 9ETSN4 9EUSN4 9EWSN4 9EXSN4 9EYSN4 9EZSN4 9HESN4 9HFSN4 9HGSN4 9HHSN4 9HJSN4 9HLSN4 9HNSN4 9HPSN4 9HQSN4 9HRSN4 9HSSN4 9HTSN4 9HUSN4 9HWSN4 9HXSN4 9HYSN4 9HZSN4 9JASN4 9JBSN4 9JDSN4 9JESN4 9JFSN4 9JGSN4 9JNSN4 9JPSN4 9JRSN4 9JSSN4 9JTSN4 9JUSN4 9JWSN4 9JXSN4 9JZSN4 9LASN4 9LBSN4 9LDSN4 9LESN4 9LFSN4 9LJSN4 9LLSN4 9LNSN4 9LPSN4 9LQSN4 9LRSN4 9LSSN4 9LTSN4 9LUSN4 9LWSN4 9LXSN4 9LYSN4 9LZSN4 9NASN4 9NBSN4 9NDSN4 9NESN4 9NFSN4 9NGSN4 9NHSN4 9NJSN4 9NLSN4 9NNSN4 9NPSN4 9NQSN4 9NRSN4 9NTSN4 9NUSN4 9NWSN4 9NXSN4 9PASN4 9PBSN4 9PDSN4 9PESN4 9PFSN4 9PGSN4 9PHSN4 9PJSN4 9PLSN4 9PNSN4 9PPSN4 9PQSN4 9PRSN4 9PSSN4 9PTSN4 9PUSN4 9PWSN4 9PXSN4 9PYSN4 9PZSN4 9QASN4 9QBSN4 9QDSN4 9QESN4 9QFSN4 9QGSN4 9QJSN4 9QLSN4 9QNSN4 9QPSN4 9QSSN4 9QTSN4 9QUSN4 9QWSN4 9RHSN4 9SBSN4 9SDSN4 9SESN4 9SFSN4 9SGSN4 9SPSN4 9SQ

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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