SN15 4 postcode sector in the SN15 district

SN15 4 is a sector of the SN15 district: every postcode that starts SN15 4. It has 257 postcodes in use, one of them a large-user postcode. 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 SN15 4 sector, by flood risk

Map of every postcode in the SN15 4 sector, by flood risk Of the 257 postcodes in the SN15 4 sector that ONS places, 18 have a home or business at high risk, 5 are at medium risk at worst, 10 are at low risk at worst and 224 are not on the Environment Agency's at-risk list. Places named: Lyneham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. SN15 4AA: not on the flood risk listSN15 4AB: not on the flood risk listSN15 4AD: not on the flood risk listSN15 4AE: not on the flood risk listSN15 4AF: not on the flood risk listSN15 4AG: not on the flood risk listSN15 4AH: not on the flood risk listSN15 4AJ: not on the flood risk listSN15 4AL: not on the flood risk listSN15 4AN: not on the flood risk listSN15 4AP: not on the flood risk listSN15 4AQ: not on the flood risk listSN15 4AR: not on the flood risk listSN15 4AS: not on the flood risk listSN15 4AT: not on the flood risk listSN15 4AW: not on the flood risk listSN15 4AX: not on the flood risk listSN15 4AY: not on the flood risk listSN15 4AZ: not on the flood risk listSN15 4BD: not on the flood risk listSN15 4BH: not on the flood risk listSN15 4BJ: not on the flood risk listSN15 4BL: not on the flood risk listSN15 4BN: not on the flood risk listSN15 4BP: not on the flood risk listSN15 4BS: not on the flood risk listSN15 4BT: not on the flood risk listSN15 4BU: not on the flood risk listSN15 4BW: not on the flood risk listSN15 4BX: not on the flood risk listSN15 4BY: not on the flood risk listSN15 4BZ: not on the flood risk listSN15 4DA: not on the flood risk listSN15 4DB: not on the flood risk listSN15 4DD: not on the flood risk listSN15 4DF: not on the flood risk listSN15 4DG: not on the flood risk listSN15 4DH: not on the flood risk listSN15 4DJ: not on the flood risk listSN15 4DN: not on the flood risk listSN15 4DP: not on the flood risk listSN15 4DQ: not on the flood risk listSN15 4DR: not on the flood risk listSN15 4DS: not on the flood risk listSN15 4DT: not on the flood risk listSN15 4DU: not on the flood risk listSN15 4DW: not on the flood risk listSN15 4DX: not on the flood risk listSN15 4DY: not on the flood risk listSN15 4DZ: not on the flood risk listSN15 4EA: not on the flood risk listSN15 4EB: not on the flood risk listSN15 4ED: not on the flood risk listSN15 4EE: not on the flood risk listSN15 4EH: not on the flood risk listSN15 4EL: not on the flood risk listSN15 4EN: not on the flood risk listSN15 4EP: not on the flood risk listSN15 4ER: not on the flood risk listSN15 4ES: not on the flood risk listSN15 4ET: not on the flood risk listSN15 4EU: not on the flood risk listSN15 4EX: not on the flood risk listSN15 4EY: not on the flood risk listSN15 4EZ: not on the flood risk listSN15 4FA: not on the flood risk listSN15 4FB: not on the flood risk listSN15 4FD: not on the flood risk listSN15 4FE: not on the flood risk listSN15 4FF: not on the flood risk listSN15 4FG: not on the flood risk listSN15 4FH: not on the flood risk listSN15 4FJ: not on the flood risk listSN15 4FN: not on the flood risk listSN15 4FP: not on the flood risk listSN15 4FQ: not on the flood risk listSN15 4FS: not on the flood risk listSN15 4GY: not on the flood risk listSN15 4HB: not on the flood risk listSN15 4HE: not on the flood risk listSN15 4HF: not on the flood risk listSN15 4HG: not on the flood risk listSN15 4HH: not on the flood risk listSN15 4HL: not on the flood risk listSN15 4HN: not on the flood risk listSN15 4HQ: not on the flood risk listSN15 4HR: not on the flood risk listSN15 4HS: not on the flood risk listSN15 4JB: not on the flood risk listSN15 4JD: not on the flood risk listSN15 4JG: not on the flood risk listSN15 4JH: not on the flood risk listSN15 4JL: not on the flood risk listSN15 4JN: not on the flood risk listSN15 4JT: not on the flood risk listSN15 4JU: not on the flood risk listSN15 4JW: not on the flood risk listSN15 4JX: not on the flood risk listSN15 4JY: not on the flood risk listSN15 4LD: not on the flood risk listSN15 4LE: not on the flood risk listSN15 4LF: not on the flood risk listSN15 4LG: not on the flood risk listSN15 4LL: not on the flood risk listSN15 4LN: not on the flood risk listSN15 4LQ: not on the flood risk listSN15 4LT: not on the flood risk listSN15 4LU: not on the flood risk listSN15 4LY: not on the flood risk listSN15 4NA: not on the flood risk listSN15 4ND: not on the flood risk listSN15 4NF: not on the flood risk listSN15 4NG: not on the flood risk listSN15 4NH: not on the flood risk listSN15 4NJ: not on the flood risk listSN15 4NL: not on the flood risk listSN15 4NN: not on the flood risk listSN15 4NP: not on the flood risk listSN15 4NQ: not on the flood risk listSN15 4NR: not on the flood risk listSN15 4NS: not on the flood risk listSN15 4NT: not on the flood risk listSN15 4NU: not on the flood risk listSN15 4NW: not on the flood risk listSN15 4NX: not on the flood risk listSN15 4NY: not on the flood risk listSN15 4NZ: not on the flood risk listSN15 4PA: not on the flood risk listSN15 4PB: not on the flood risk listSN15 4PD: not on the flood risk listSN15 4PE: not on the flood risk listSN15 4PF: not on the flood risk listSN15 4PG: not on the flood risk listSN15 4PH: not on the flood risk listSN15 4PJ: not on the flood risk listSN15 4PL: not on the flood risk listSN15 4PN: not on the flood risk listSN15 4PQ: not on the flood risk listSN15 4PR: not on the flood risk listSN15 4PT: not on the flood risk listSN15 4PW: not on the flood risk listSN15 4QA: not on the flood risk listSN15 4QB: not on the flood risk listSN15 4QD: not on the flood risk listSN15 4QE: not on the flood risk listSN15 4QG: not on the flood risk listSN15 4QH: not on the flood risk listSN15 4QJ: not on the flood risk listSN15 4QL: not on the flood risk listSN15 4QP: not on the flood risk listSN15 4QQ: not on the flood risk listSN15 4QR: not on the flood risk listSN15 4QS: not on the flood risk listSN15 4QT: not on the flood risk listSN15 4QU: not on the flood risk listSN15 4QW: not on the flood risk listSN15 4QX: not on the flood risk listSN15 4QY: not on the flood risk listSN15 4QZ: not on the flood risk listSN15 4RA: not on the flood risk listSN15 4RD: not on the flood risk listSN15 4RE: not on the flood risk listSN15 4RF: not on the flood risk listSN15 4RH: not on the flood risk listSN15 4RL: not on the flood risk listSN15 4RN: not on the flood risk listSN15 4RP: not on the flood risk listSN15 4RR: not on the flood risk listSN15 4RS: not on the flood risk listSN15 4RW: not on the flood risk listSN15 4RZ: not on the flood risk listSN15 4SA: not on the flood risk listSN15 4SB: not on the flood risk listSN15 4SD: not on the flood risk listSN15 4SE: not on the flood risk listSN15 4SF: not on the flood risk listSN15 4SG: not on the flood risk listSN15 4SJ: not on the flood risk listSN15 4SL: not on the flood risk listSN15 4SQ: not on the flood risk listSN15 4ST: not on the flood risk listSN15 4TE: not on the flood risk listSN15 4TG: not on the flood risk listSN15 4TH: not on the flood risk listSN15 4TP: not on the flood risk listSN15 4TR: not on the flood risk listSN15 4TX: not on the flood risk listSN15 4TY: not on the flood risk listSN15 4XX: not on the flood risk listSN15 4DL: low flood risk at worstSN15 4HJ: low flood risk at worstSN15 4HP: low flood risk at worstSN15 4HX: low flood risk at worstSN15 4JA: low flood risk at worstSN15 4JJ: low flood risk at worstSN15 4LS: low flood risk at worstSN15 4LX: low flood risk at worstSN15 4NE: low flood risk at worstSN15 4SW: low flood risk at worstSN15 4AU: medium flood risk at worstSN15 4JE: medium flood risk at worstSN15 4LP: medium flood risk at worstSN15 4LW: medium flood risk at worstSN15 4NB: medium flood risk at worstSN15 4BA: high flood riskSN15 4BG: high flood riskSN15 4BQ: high flood riskSN15 4DE: high flood riskSN15 4EQ: high flood riskSN15 4FL: high flood riskSN15 4HU: high flood riskSN15 4HW: high flood riskSN15 4HY: high flood riskSN15 4HZ: high flood riskSN15 4JF: high flood riskSN15 4JP: high flood riskSN15 4JR: high flood riskSN15 4JS: high flood riskSN15 4LJ: high flood riskSN15 4LR: high flood riskSN15 4LZ: high flood riskSN15 4RX: high flood risk Lyneham Map of every postcode in the SN15 4 sector, by flood risk Of the 257 postcodes in the SN15 4 sector that ONS places, 18 have a home or business at high risk, 5 are at medium risk at worst, 10 are at low risk at worst and 224 are not on the Environment Agency's at-risk list. Places named: Lyneham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. Lyneham
  • A home or business at high risk: 18
  • At medium risk at worst: 5
  • At low risk at worst: 10
  • At very low risk only: 0
  • Not on the at-risk list: 224

Of the 257 postcodes in the SN15 4 sector that ONS places, 18 have a home or business at high risk, 5 are at medium risk at worst, 10 are at low risk at worst and 224 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

18 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

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

SN15 4LZ15 at high riskSN15 4BG8 at high riskSN15 4HW6 at high riskSN15 4HU6 at high riskSN15 4EQ5 at high riskSN15 4JS4 at high riskSN15 4BQ4 at high riskSN15 4HZ4 at high riskSN15 4HY3 at high riskSN15 4DE3 at high riskSN15 4JR2 at high riskSN15 4LR1 at high risk

What do homes sell for in SN15 4?

Homes in SN15 4 sold for a typical £340,000 in the 12 months to August 2026, across 72 sales, down 9.8% on the 12 months before, HM Land Registry's figures show.

£340,000 typical price, the 12 months to August 2026
£377,000 12 months to August 2025
▼ down 9.8% on the 12 months before
  • Detached £550,000 26 sales
  • Semi-detached £332,500 22 sales
  • Terraced £233,750 22 sales
  • Flat or maisonette 2 sales, too few to price

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 SN15 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

Postcodes in SN15 4

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.

SN15 4AASN15 4ABSN15 4ADSN15 4AESN15 4AFSN15 4AGSN15 4AHSN15 4AJSN15 4ALSN15 4ANSN15 4APSN15 4AQSN15 4ARSN15 4ASSN15 4ATSN15 4AUSN15 4AWSN15 4AXSN15 4AYSN15 4AZSN15 4BASN15 4BBSN15 4BDSN15 4BGSN15 4BHSN15 4BJSN15 4BLSN15 4BNSN15 4BPSN15 4BQSN15 4BSSN15 4BTSN15 4BUSN15 4BWSN15 4BXSN15 4BYSN15 4BZSN15 4DASN15 4DBSN15 4DDSN15 4DESN15 4DFSN15 4DGSN15 4DHSN15 4DJSN15 4DLSN15 4DNSN15 4DPSN15 4DQSN15 4DRSN15 4DSSN15 4DTSN15 4DUSN15 4DWSN15 4DXSN15 4DYSN15 4DZSN15 4EASN15 4EBSN15 4EDSN15 4EESN15 4EFSN15 4EHSN15 4ELSN15 4ENSN15 4EPSN15 4EQSN15 4ERSN15 4ESSN15 4ETSN15 4EUSN15 4EWSN15 4EXSN15 4EYSN15 4EZSN15 4FASN15 4FBSN15 4FDSN15 4FESN15 4FFSN15 4FGSN15 4FHSN15 4FJSN15 4FLSN15 4FNSN15 4FPSN15 4FQSN15 4FSSN15 4FTSN15 4GYSN15 4GZSN15 4HASN15 4HBSN15 4HDSN15 4HESN15 4HFSN15 4HGSN15 4HHSN15 4HJSN15 4HLSN15 4HNSN15 4HPSN15 4HQSN15 4HRSN15 4HSSN15 4HTSN15 4HUSN15 4HWSN15 4HXSN15 4HYSN15 4HZSN15 4JASN15 4JBSN15 4JDSN15 4JESN15 4JFSN15 4JGSN15 4JHSN15 4JJSN15 4JLSN15 4JNSN15 4JPSN15 4JRSN15 4JSSN15 4JTSN15 4JUSN15 4JWSN15 4JXSN15 4JYSN15 4JZSN15 4LBSN15 4LDSN15 4LESN15 4LFSN15 4LGSN15 4LJSN15 4LLSN15 4LNSN15 4LPSN15 4LQSN15 4LRSN15 4LSSN15 4LTSN15 4LUSN15 4LWSN15 4LXSN15 4LYSN15 4LZSN15 4NASN15 4NBSN15 4NDSN15 4NESN15 4NFSN15 4NGSN15 4NHSN15 4NJSN15 4NLSN15 4NNSN15 4NPSN15 4NQSN15 4NRSN15 4NSSN15 4NTSN15 4NUSN15 4NWSN15 4NXSN15 4NYSN15 4NZSN15 4PASN15 4PBSN15 4PDSN15 4PESN15 4PFSN15 4PGSN15 4PHSN15 4PJSN15 4PLSN15 4PNSN15 4PPSN15 4PQSN15 4PRSN15 4PSSN15 4PTSN15 4PUSN15 4PWSN15 4PXSN15 4QASN15 4QBSN15 4QDSN15 4QESN15 4QFSN15 4QGSN15 4QHSN15 4QJSN15 4QLSN15 4QNSN15 4QPSN15 4QQSN15 4QRSN15 4QSSN15 4QTSN15 4QUSN15 4QWSN15 4QXSN15 4QYSN15 4QZSN15 4RASN15 4RBSN15 4RDSN15 4RESN15 4RFSN15 4RHSN15 4RJSN15 4RLSN15 4RNSN15 4RPSN15 4RQSN15 4RRSN15 4RSSN15 4RTSN15 4RUSN15 4RWSN15 4RXSN15 4RYSN15 4RZSN15 4SASN15 4SBSN15 4SDSN15 4SESN15 4SFSN15 4SGSN15 4SHSN15 4SJSN15 4SLSN15 4SNSN15 4SPSN15 4SQSN15 4STSN15 4SWSN15 4TASN15 4TBSN15 4TDSN15 4TESN15 4TFSN15 4TGSN15 4THSN15 4TJSN15 4TLSN15 4TPSN15 4TQSN15 4TRSN15 4TUSN15 4TXSN15 4TYSN15 4UZSN15 4XASN15 4XX

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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