SN15 3 postcode sector in the SN15 district

SN15 3 is a sector of the SN15 district: every postcode that starts SN15 3. It has 331 postcodes in use, 10 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 SN15 3 sector, by flood risk

Map of every postcode in the SN15 3 sector, by flood risk Of the 331 postcodes in the SN15 3 sector that ONS places, 8 have a home or business at high risk, 4 are at medium risk at worst, 22 are at low risk at worst and 297 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 6 postcodes at high or medium risk. Places named: Chippenham Hardens & Central, Chippenham Pewsham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A4 SN15 3AA: not on the flood risk listSN15 3AB: not on the flood risk listSN15 3AD: not on the flood risk listSN15 3AE: not on the flood risk listSN15 3AF: not on the flood risk listSN15 3AG: not on the flood risk listSN15 3AH: not on the flood risk listSN15 3AJ: not on the flood risk listSN15 3AL: not on the flood risk listSN15 3AN: not on the flood risk listSN15 3AP: not on the flood risk listSN15 3AQ: not on the flood risk listSN15 3AR: not on the flood risk listSN15 3AS: not on the flood risk listSN15 3AT: not on the flood risk listSN15 3AU: not on the flood risk listSN15 3AW: not on the flood risk listSN15 3AX: not on the flood risk listSN15 3AY: not on the flood risk listSN15 3AZ: not on the flood risk listSN15 3BA: not on the flood risk listSN15 3BB: not on the flood risk listSN15 3BD: not on the flood risk listSN15 3BG: not on the flood risk listSN15 3BH: not on the flood risk listSN15 3BJ: not on the flood risk listSN15 3BL: not on the flood risk listSN15 3BP: not on the flood risk listSN15 3BQ: not on the flood risk listSN15 3BS: not on the flood risk listSN15 3BT: not on the flood risk listSN15 3BU: not on the flood risk listSN15 3BW: not on the flood risk listSN15 3BX: not on the flood risk listSN15 3BY: not on the flood risk listSN15 3BZ: not on the flood risk listSN15 3DB: not on the flood risk listSN15 3DE: not on the flood risk listSN15 3DF: not on the flood risk listSN15 3DG: not on the flood risk listSN15 3DJ: not on the flood risk listSN15 3DL: not on the flood risk listSN15 3DN: not on the flood risk listSN15 3DP: not on the flood risk listSN15 3DQ: not on the flood risk listSN15 3DR: not on the flood risk listSN15 3DS: not on the flood risk listSN15 3DT: not on the flood risk listSN15 3DU: not on the flood risk listSN15 3DW: not on the flood risk listSN15 3DX: not on the flood risk listSN15 3DY: not on the flood risk listSN15 3DZ: not on the flood risk listSN15 3EA: not on the flood risk listSN15 3EB: not on the flood risk listSN15 3ED: not on the flood risk listSN15 3EE: not on the flood risk listSN15 3EF: not on the flood risk listSN15 3EG: not on the flood risk listSN15 3EH: not on the flood risk listSN15 3EL: not on the flood risk listSN15 3EN: not on the flood risk listSN15 3EQ: not on the flood risk listSN15 3ES: not on the flood risk listSN15 3EU: not on the flood risk listSN15 3EZ: not on the flood risk listSN15 3FA: not on the flood risk listSN15 3FB: not on the flood risk listSN15 3FD: not on the flood risk listSN15 3FE: not on the flood risk listSN15 3FF: not on the flood risk listSN15 3FG: not on the flood risk listSN15 3FH: not on the flood risk listSN15 3FJ: not on the flood risk listSN15 3FL: not on the flood risk listSN15 3FN: not on the flood risk listSN15 3FP: not on the flood risk listSN15 3FQ: not on the flood risk listSN15 3FR: not on the flood risk listSN15 3FS: not on the flood risk listSN15 3FT: not on the flood risk listSN15 3FU: not on the flood risk listSN15 3FW: not on the flood risk listSN15 3FX: not on the flood risk listSN15 3FY: not on the flood risk listSN15 3FZ: not on the flood risk listSN15 3GA: not on the flood risk listSN15 3GB: not on the flood risk listSN15 3GD: not on the flood risk listSN15 3GE: not on the flood risk listSN15 3GF: not on the flood risk listSN15 3GG: not on the flood risk listSN15 3GH: not on the flood risk listSN15 3GJ: not on the flood risk listSN15 3GL: not on the flood risk listSN15 3GN: not on the flood risk listSN15 3GP: not on the flood risk listSN15 3GQ: not on the flood risk listSN15 3GR: not on the flood risk listSN15 3GS: not on the flood risk listSN15 3GT: not on the flood risk listSN15 3GW: not on the flood risk listSN15 3GY: not on the flood risk listSN15 3HD: not on the flood risk listSN15 3HE: not on the flood risk listSN15 3HF: not on the flood risk listSN15 3HG: not on the flood risk listSN15 3HJ: not on the flood risk listSN15 3HL: not on the flood risk listSN15 3HN: not on the flood risk listSN15 3HP: not on the flood risk listSN15 3HQ: not on the flood risk listSN15 3HR: not on the flood risk listSN15 3HS: not on the flood risk listSN15 3HT: not on the flood risk listSN15 3HW: not on the flood risk listSN15 3HX: not on the flood risk listSN15 3JE: not on the flood risk listSN15 3JF: not on the flood risk listSN15 3JG: not on the flood risk listSN15 3JH: not on the flood risk listSN15 3JJ: not on the flood risk listSN15 3JN: not on the flood risk listSN15 3JR: not on the flood risk listSN15 3JS: not on the flood risk listSN15 3JT: not on the flood risk listSN15 3JU: not on the flood risk listSN15 3JX: not on the flood risk listSN15 3JZ: not on the flood risk listSN15 3LA: not on the flood risk listSN15 3LB: not on the flood risk listSN15 3LE: not on the flood risk listSN15 3LF: not on the flood risk listSN15 3LG: not on the flood risk listSN15 3LH: not on the flood risk listSN15 3LL: not on the flood risk listSN15 3LN: not on the flood risk listSN15 3LP: not on the flood risk listSN15 3LR: not on the flood risk listSN15 3LS: not on the flood risk listSN15 3LT: not on the flood risk listSN15 3LU: not on the flood risk listSN15 3LW: not on the flood risk listSN15 3LX: not on the flood risk listSN15 3LY: not on the flood risk listSN15 3LZ: not on the flood risk listSN15 3NA: not on the flood risk listSN15 3NB: not on the flood risk listSN15 3ND: not on the flood risk listSN15 3NE: not on the flood risk listSN15 3NF: not on the flood risk listSN15 3NG: not on the flood risk listSN15 3NH: not on the flood risk listSN15 3NJ: not on the flood risk listSN15 3NL: not on the flood risk listSN15 3NN: not on the flood risk listSN15 3NP: not on the flood risk listSN15 3NQ: not on the flood risk listSN15 3NR: not on the flood risk listSN15 3NS: not on the flood risk listSN15 3NT: not on the flood risk listSN15 3NW: not on the flood risk listSN15 3NX: not on the flood risk listSN15 3NY: not on the flood risk listSN15 3NZ: not on the flood risk listSN15 3PB: not on the flood risk listSN15 3PD: not on the flood risk listSN15 3PE: not on the flood risk listSN15 3PF: not on the flood risk listSN15 3PG: not on the flood risk listSN15 3PH: not on the flood risk listSN15 3PL: not on the flood risk listSN15 3PN: not on the flood risk listSN15 3PP: not on the flood risk listSN15 3PR: not on the flood risk listSN15 3PS: not on the flood risk listSN15 3PU: not on the flood risk listSN15 3PW: not on the flood risk listSN15 3PX: not on the flood risk listSN15 3PY: not on the flood risk listSN15 3PZ: not on the flood risk listSN15 3QD: not on the flood risk listSN15 3QE: not on the flood risk listSN15 3QH: not on the flood risk listSN15 3QJ: not on the flood risk listSN15 3QL: not on the flood risk listSN15 3QN: not on the flood risk listSN15 3QP: not on the flood risk listSN15 3QQ: not on the flood risk listSN15 3QS: not on the flood risk listSN15 3QT: not on the flood risk listSN15 3QU: not on the flood risk listSN15 3QW: not on the flood risk listSN15 3QX: not on the flood risk listSN15 3QY: not on the flood risk listSN15 3RA: not on the flood risk listSN15 3RD: not on the flood risk listSN15 3RE: not on the flood risk listSN15 3RH: not on the flood risk listSN15 3RJ: not on the flood risk listSN15 3RP: not on the flood risk listSN15 3RQ: not on the flood risk listSN15 3RR: not on the flood risk listSN15 3RS: not on the flood risk listSN15 3RT: not on the flood risk listSN15 3RU: not on the flood risk listSN15 3RW: not on the flood risk listSN15 3RX: not on the flood risk listSN15 3RZ: not on the flood risk listSN15 3SA: not on the flood risk listSN15 3SB: not on the flood risk listSN15 3SD: not on the flood risk listSN15 3SE: not on the flood risk listSN15 3SF: not on the flood risk listSN15 3SG: not on the flood risk listSN15 3SJ: not on the flood risk listSN15 3SL: not on the flood risk listSN15 3SN: not on the flood risk listSN15 3SP: not on the flood risk listSN15 3SR: not on the flood risk listSN15 3SS: not on the flood risk listSN15 3ST: not on the flood risk listSN15 3SU: not on the flood risk listSN15 3SX: not on the flood risk listSN15 3SY: not on the flood risk listSN15 3TA: not on the flood risk listSN15 3TB: not on the flood risk listSN15 3TD: not on the flood risk listSN15 3TE: not on the flood risk listSN15 3TF: not on the flood risk listSN15 3TG: not on the flood risk listSN15 3TH: not on the flood risk listSN15 3TJ: not on the flood risk listSN15 3TL: not on the flood risk listSN15 3TN: not on the flood risk listSN15 3TP: not on the flood risk listSN15 3TQ: not on the flood risk listSN15 3TR: not on the flood risk listSN15 3TS: not on the flood risk listSN15 3TT: not on the flood risk listSN15 3TU: not on the flood risk listSN15 3TW: not on the flood risk listSN15 3TX: not on the flood risk listSN15 3TY: not on the flood risk listSN15 3TZ: not on the flood risk listSN15 3UA: not on the flood risk listSN15 3UB: not on the flood risk listSN15 3UD: not on the flood risk listSN15 3UE: not on the flood risk listSN15 3UF: not on the flood risk listSN15 3UG: not on the flood risk listSN15 3UH: not on the flood risk listSN15 3UJ: not on the flood risk listSN15 3UL: not on the flood risk listSN15 3UN: not on the flood risk listSN15 3UP: not on the flood risk listSN15 3UQ: not on the flood risk listSN15 3UR: not on the flood risk listSN15 3UT: not on the flood risk listSN15 3UU: not on the flood risk listSN15 3UW: not on the flood risk listSN15 3UX: not on the flood risk listSN15 3UY: not on the flood risk listSN15 3UZ: not on the flood risk listSN15 3WA: not on the flood risk listSN15 3WB: not on the flood risk listSN15 3XA: not on the flood risk listSN15 3XB: not on the flood risk listSN15 3XF: not on the flood risk listSN15 3XG: not on the flood risk listSN15 3XH: not on the flood risk listSN15 3XQ: not on the flood risk listSN15 3YA: not on the flood risk listSN15 3YB: not on the flood risk listSN15 3YD: not on the flood risk listSN15 3YE: not on the flood risk listSN15 3YF: not on the flood risk listSN15 3YH: not on the flood risk listSN15 3YJ: not on the flood risk listSN15 3YQ: not on the flood risk listSN15 3YR: not on the flood risk listSN15 3YS: not on the flood risk listSN15 3YT: not on the flood risk listSN15 3YW: not on the flood risk listSN15 3YY: not on the flood risk listSN15 3BN: low flood risk at worstSN15 3ER: low flood risk at worstSN15 3GX: low flood risk at worstSN15 3HA: low flood risk at worstSN15 3HY: low flood risk at worstSN15 3JD: low flood risk at worstSN15 3PA: low flood risk at worstSN15 3QZ: low flood risk at worstSN15 3RB: low flood risk at worstSN15 3RF: low flood risk at worstSN15 3RG: low flood risk at worstSN15 3RL: low flood risk at worstSN15 3RN: low flood risk at worstSN15 3SQ: low flood risk at worstSN15 3XJ: low flood risk at worstSN15 3XL: low flood risk at worstSN15 3XN: low flood risk at worstSN15 3XS: low flood risk at worstSN15 3XT: low flood risk at worstSN15 3XW: low flood risk at worstSN15 3XX: low flood risk at worstSN15 3XY: low flood risk at worstSN15 3GU: medium flood risk at worstSN15 3HB: medium flood risk at worstSN15 3SH: medium flood risk at worstSN15 3WL: medium flood risk at worstSN15 3EP: high flood riskSN15 3EY: high flood riskSN15 3HZ: high flood riskSN15 3JP: high flood riskSN15 3JW: high flood riskSN15 3JY: high flood riskSN15 3LD: high flood riskSN15 3NU: high flood risk Chippenham Hardens & CentralChippenham Pewsham 6 postcodes at high or medium risk, outlined: this goes to SN15 3EP, the one with most homes and businesses at high risk6 postcodes at high or medium risk Map of every postcode in the SN15 3 sector, by flood risk Of the 331 postcodes in the SN15 3 sector that ONS places, 8 have a home or business at high risk, 4 are at medium risk at worst, 22 are at low risk at worst and 297 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 6 postcodes at high or medium risk. Places named: Chippenham Hardens & Central, Chippenham Pewsham. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Chippenham Hardens & CentralChippenham Pewsham
  • A home or business at high risk: 8
  • At medium risk at worst: 4
  • At low risk at worst: 22
  • At very low risk only: 0
  • Not on the at-risk list: 297
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 331 postcodes in the SN15 3 sector that ONS places, 8 have a home or business at high risk, 4 are at medium risk at worst, 22 are at low risk at worst and 297 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. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode. Names in italics are council wards: we hold no town or village names here.

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.

SN15 3LD7 at high riskSN15 3EP4 at high riskSN15 3HZ4 at high riskSN15 3JY3 at high riskSN15 3JP2 at high riskSN15 3EY1 at high riskSN15 3JW1 at high riskSN15 3NU1 at high risk

Where the postcodes at high or medium risk lie together

  • 6 postcodes at high or medium risk, outlined on the map. SN15 3EP, is the one with most homes and businesses at high risk.

What do homes sell for in SN15 3?

Homes in SN15 3 sold for a typical £281,000 in the 12 months to August 2026, across 160 sales, up 4.1% on the 12 months before, HM Land Registry's figures show.

£281,000 typical price, the 12 months to August 2026
£270,000 12 months to August 2025
▲ up 4.1% on the 12 months before
  • Detached £407,500 53 sales
  • Semi-detached £292,475 40 sales
  • Terraced £217,750 34 sales
  • Flat or maisonette £161,000 33 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 SN15 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 SN15 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.

SN15 3AASN15 3ABSN15 3ADSN15 3AESN15 3AFSN15 3AGSN15 3AHSN15 3AJSN15 3ALSN15 3ANSN15 3APSN15 3AQSN15 3ARSN15 3ASSN15 3ATSN15 3AUSN15 3AWSN15 3AXSN15 3AYSN15 3AZSN15 3BASN15 3BBSN15 3BDSN15 3BESN15 3BGSN15 3BHSN15 3BJSN15 3BLSN15 3BNSN15 3BPSN15 3BQSN15 3BSSN15 3BTSN15 3BUSN15 3BWSN15 3BXSN15 3BYSN15 3BZSN15 3DBSN15 3DDSN15 3DESN15 3DFSN15 3DGSN15 3DJSN15 3DLSN15 3DNSN15 3DPSN15 3DQSN15 3DRSN15 3DSSN15 3DTSN15 3DUSN15 3DWSN15 3DXSN15 3DYSN15 3DZSN15 3EASN15 3EBSN15 3EDSN15 3EESN15 3EFSN15 3EGSN15 3EHSN15 3EJSN15 3ELSN15 3ENSN15 3EPSN15 3EQSN15 3ERSN15 3ESSN15 3EUSN15 3EWSN15 3EXSN15 3EYSN15 3EZSN15 3FASN15 3FBSN15 3FDSN15 3FESN15 3FFSN15 3FGSN15 3FHSN15 3FJSN15 3FLSN15 3FNSN15 3FPSN15 3FQSN15 3FRSN15 3FSSN15 3FTSN15 3FUSN15 3FWSN15 3FXSN15 3FYSN15 3FZSN15 3GASN15 3GBSN15 3GDSN15 3GESN15 3GFSN15 3GGSN15 3GHSN15 3GJSN15 3GLSN15 3GNSN15 3GPSN15 3GQSN15 3GRSN15 3GSSN15 3GTSN15 3GUSN15 3GWSN15 3GXSN15 3GYSN15 3HASN15 3HBSN15 3HDSN15 3HESN15 3HFSN15 3HGSN15 3HJSN15 3HLSN15 3HNSN15 3HPSN15 3HQSN15 3HRSN15 3HSSN15 3HTSN15 3HUSN15 3HWSN15 3HXSN15 3HYSN15 3HZSN15 3JDSN15 3JESN15 3JFSN15 3JGSN15 3JHSN15 3JJSN15 3JNSN15 3JPSN15 3JRSN15 3JSSN15 3JTSN15 3JUSN15 3JWSN15 3JXSN15 3JYSN15 3JZSN15 3LASN15 3LBSN15 3LDSN15 3LESN15 3LFSN15 3LGSN15 3LHSN15 3LLSN15 3LNSN15 3LPSN15 3LRSN15 3LSSN15 3LTSN15 3LUSN15 3LWSN15 3LXSN15 3LYSN15 3LZSN15 3NASN15 3NBSN15 3NDSN15 3NESN15 3NFSN15 3NGSN15 3NHSN15 3NJSN15 3NLSN15 3NNSN15 3NPSN15 3NQSN15 3NRSN15 3NSSN15 3NTSN15 3NUSN15 3NWSN15 3NXSN15 3NYSN15 3NZSN15 3PASN15 3PBSN15 3PDSN15 3PESN15 3PFSN15 3PGSN15 3PHSN15 3PJSN15 3PLSN15 3PNSN15 3PPSN15 3PRSN15 3PSSN15 3PUSN15 3PWSN15 3PXSN15 3PYSN15 3PZSN15 3QDSN15 3QESN15 3QHSN15 3QJSN15 3QLSN15 3QNSN15 3QPSN15 3QQSN15 3QSSN15 3QTSN15 3QUSN15 3QWSN15 3QXSN15 3QYSN15 3QZSN15 3RASN15 3RBSN15 3RDSN15 3RESN15 3RFSN15 3RGSN15 3RHSN15 3RJSN15 3RLSN15 3RNSN15 3RPSN15 3RQSN15 3RRSN15 3RSSN15 3RTSN15 3RUSN15 3RWSN15 3RXSN15 3RZSN15 3SASN15 3SBSN15 3SDSN15 3SESN15 3SFSN15 3SGSN15 3SHSN15 3SJSN15 3SLSN15 3SNSN15 3SPSN15 3SQSN15 3SRSN15 3SSSN15 3STSN15 3SUSN15 3SXSN15 3SYSN15 3TASN15 3TBSN15 3TDSN15 3TESN15 3TFSN15 3TGSN15 3THSN15 3TJSN15 3TLSN15 3TNSN15 3TPSN15 3TQSN15 3TRSN15 3TSSN15 3TTSN15 3TUSN15 3TWSN15 3TXSN15 3TYSN15 3TZSN15 3UASN15 3UBSN15 3UDSN15 3UESN15 3UFSN15 3UGSN15 3UHSN15 3UJSN15 3ULSN15 3UNSN15 3UPSN15 3UQSN15 3URSN15 3UTSN15 3UUSN15 3UWSN15 3UXSN15 3UYSN15 3UZSN15 3WASN15 3WBSN15 3WLSN15 3XASN15 3XBSN15 3XESN15 3XFSN15 3XGSN15 3XHSN15 3XJSN15 3XLSN15 3XNSN15 3XQSN15 3XSSN15 3XTSN15 3XWSN15 3XXSN15 3XYSN15 3YASN15 3YBSN15 3YDSN15 3YESN15 3YFSN15 3YGSN15 3YHSN15 3YJSN15 3YNSN15 3YPSN15 3YQSN15 3YRSN15 3YSSN15 3YTSN15 3YUSN15 3YWSN15 3YY

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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