SG6 3 postcode sector in the SG6 district

SG6 3 is a sector of the SG6 district: every postcode that starts SG6 3. It has 195 postcodes in use, 16 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 SG6 3 sector, by flood risk

Map of every postcode in the SG6 3 sector, by flood risk Of the 195 postcodes in the SG6 3 sector that ONS places, 195 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Letchworth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A505 SG6 3AA: not on the flood risk listSG6 3AE: not on the flood risk listSG6 3AL: not on the flood risk listSG6 3AN: not on the flood risk listSG6 3AQ: not on the flood risk listSG6 3AR: not on the flood risk listSG6 3AU: not on the flood risk listSG6 3AW: not on the flood risk listSG6 3AY: not on the flood risk listSG6 3AZ: not on the flood risk listSG6 3BA: not on the flood risk listSG6 3BB: not on the flood risk listSG6 3BE: not on the flood risk listSG6 3BF: not on the flood risk listSG6 3BJ: not on the flood risk listSG6 3BL: not on the flood risk listSG6 3BQ: not on the flood risk listSG6 3BX: not on the flood risk listSG6 3BY: not on the flood risk listSG6 3DA: not on the flood risk listSG6 3DD: not on the flood risk listSG6 3DE: not on the flood risk listSG6 3DG: not on the flood risk listSG6 3DL: not on the flood risk listSG6 3DN: not on the flood risk listSG6 3DP: not on the flood risk listSG6 3DU: not on the flood risk listSG6 3DW: not on the flood risk listSG6 3DZ: not on the flood risk listSG6 3EA: not on the flood risk listSG6 3EB: not on the flood risk listSG6 3ED: not on the flood risk listSG6 3EE: not on the flood risk listSG6 3EF: not on the flood risk listSG6 3EG: not on the flood risk listSG6 3EJ: not on the flood risk listSG6 3EL: not on the flood risk listSG6 3EN: not on the flood risk listSG6 3EP: not on the flood risk listSG6 3EQ: not on the flood risk listSG6 3ER: not on the flood risk listSG6 3ES: not on the flood risk listSG6 3ET: not on the flood risk listSG6 3EU: not on the flood risk listSG6 3EW: not on the flood risk listSG6 3GY: not on the flood risk listSG6 3GZ: not on the flood risk listSG6 3HD: not on the flood risk listSG6 3HE: not on the flood risk listSG6 3HF: not on the flood risk listSG6 3HG: not on the flood risk listSG6 3HH: not on the flood risk listSG6 3HJ: not on the flood risk listSG6 3HL: not on the flood risk listSG6 3HQ: not on the flood risk listSG6 3HR: not on the flood risk listSG6 3HS: not on the flood risk listSG6 3HT: not on the flood risk listSG6 3HU: not on the flood risk listSG6 3HW: not on the flood risk listSG6 3HX: not on the flood risk listSG6 3HY: not on the flood risk listSG6 3HZ: not on the flood risk listSG6 3JA: not on the flood risk listSG6 3JB: not on the flood risk listSG6 3JD: not on the flood risk listSG6 3JE: not on the flood risk listSG6 3JF: not on the flood risk listSG6 3JH: not on the flood risk listSG6 3JJ: not on the flood risk listSG6 3JN: not on the flood risk listSG6 3JP: not on the flood risk listSG6 3JR: not on the flood risk listSG6 3JS: not on the flood risk listSG6 3JT: not on the flood risk listSG6 3JU: not on the flood risk listSG6 3JW: not on the flood risk listSG6 3JX: not on the flood risk listSG6 3JY: not on the flood risk listSG6 3JZ: not on the flood risk listSG6 3LB: not on the flood risk listSG6 3LD: not on the flood risk listSG6 3LE: not on the flood risk listSG6 3LF: not on the flood risk listSG6 3LL: not on the flood risk listSG6 3LN: not on the flood risk listSG6 3LP: not on the flood risk listSG6 3LR: not on the flood risk listSG6 3LS: not on the flood risk listSG6 3LT: not on the flood risk listSG6 3LU: not on the flood risk listSG6 3LW: not on the flood risk listSG6 3LX: not on the flood risk listSG6 3LY: not on the flood risk listSG6 3NA: not on the flood risk listSG6 3NB: not on the flood risk listSG6 3ND: not on the flood risk listSG6 3NE: not on the flood risk listSG6 3NF: not on the flood risk listSG6 3NG: not on the flood risk listSG6 3NH: not on the flood risk listSG6 3NJ: not on the flood risk listSG6 3NL: not on the flood risk listSG6 3NN: not on the flood risk listSG6 3NP: not on the flood risk listSG6 3NQ: not on the flood risk listSG6 3NR: not on the flood risk listSG6 3NW: not on the flood risk listSG6 3NX: not on the flood risk listSG6 3NZ: not on the flood risk listSG6 3PA: not on the flood risk listSG6 3PF: not on the flood risk listSG6 3PH: not on the flood risk listSG6 3PJ: not on the flood risk listSG6 3PL: not on the flood risk listSG6 3PN: not on the flood risk listSG6 3PQ: not on the flood risk listSG6 3PR: not on the flood risk listSG6 3PT: not on the flood risk listSG6 3PU: not on the flood risk listSG6 3PW: not on the flood risk listSG6 3PX: not on the flood risk listSG6 3PY: not on the flood risk listSG6 3PZ: not on the flood risk listSG6 3QA: not on the flood risk listSG6 3QB: not on the flood risk listSG6 3QD: not on the flood risk listSG6 3QJ: not on the flood risk listSG6 3QL: not on the flood risk listSG6 3QN: not on the flood risk listSG6 3QP: not on the flood risk listSG6 3QR: not on the flood risk listSG6 3QS: not on the flood risk listSG6 3QT: not on the flood risk listSG6 3QU: not on the flood risk listSG6 3QW: not on the flood risk listSG6 3QX: not on the flood risk listSG6 3QY: not on the flood risk listSG6 3QZ: not on the flood risk listSG6 3RA: not on the flood risk listSG6 3RB: not on the flood risk listSG6 3RD: not on the flood risk listSG6 3RE: not on the flood risk listSG6 3RF: not on the flood risk listSG6 3RG: not on the flood risk listSG6 3RH: not on the flood risk listSG6 3RJ: not on the flood risk listSG6 3RL: not on the flood risk listSG6 3RN: not on the flood risk listSG6 3RP: not on the flood risk listSG6 3RQ: not on the flood risk listSG6 3RR: not on the flood risk listSG6 3RS: not on the flood risk listSG6 3RT: not on the flood risk listSG6 3RU: not on the flood risk listSG6 3RW: not on the flood risk listSG6 3SA: not on the flood risk listSG6 3SB: not on the flood risk listSG6 3SD: not on the flood risk listSG6 3SE: not on the flood risk listSG6 3SF: not on the flood risk listSG6 3SG: not on the flood risk listSG6 3SH: not on the flood risk listSG6 3SJ: not on the flood risk listSG6 3SL: not on the flood risk listSG6 3SP: not on the flood risk listSG6 3SQ: not on the flood risk listSG6 3SR: not on the flood risk listSG6 3SS: not on the flood risk listSG6 3ST: not on the flood risk listSG6 3TA: not on the flood risk listSG6 3TB: not on the flood risk listSG6 3TG: not on the flood risk listSG6 3TH: not on the flood risk listSG6 3TP: not on the flood risk listSG6 3TQ: not on the flood risk listSG6 3TR: not on the flood risk listSG6 3TS: not on the flood risk listSG6 3TT: not on the flood risk listSG6 3TU: not on the flood risk listSG6 3TX: not on the flood risk listSG6 3TY: not on the flood risk listSG6 3TZ: not on the flood risk listSG6 3UA: not on the flood risk listSG6 3UB: not on the flood risk listSG6 3UD: not on the flood risk listSG6 3UE: not on the flood risk listSG6 3UF: not on the flood risk listSG6 3UG: not on the flood risk listSG6 3WA: not on the flood risk listSG6 3XU: not on the flood risk listSG6 3XY: not on the flood risk list Letchworth Map of every postcode in the SG6 3 sector, by flood risk Of the 195 postcodes in the SG6 3 sector that ONS places, 195 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Letchworth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Letchworth
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 195

Of the 195 postcodes in the SG6 3 sector that ONS places, 195 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

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.

SG6 3WX

What do homes sell for in SG6 3?

Homes in SG6 3 sold for a typical £460,000 in the 12 months to August 2026, across 67 sales, down 4.2% on the 12 months before, HM Land Registry's figures show.

£460,000 typical price, the 12 months to August 2026
£480,000 12 months to August 2025
▼ down 4.2% on the 12 months before
  • Detached £700,000 27 sales
  • Semi-detached £575,000 8 sales
  • Terraced £392,500 14 sales
  • Flat or maisonette £235,000 18 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 SG6 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 SG6 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.

SG6 3AASG6 3AESG6 3ALSG6 3ANSG6 3AQSG6 3ARSG6 3AUSG6 3AWSG6 3AXSG6 3AYSG6 3AZSG6 3BASG6 3BBSG6 3BESG6 3BFSG6 3BJSG6 3BLSG6 3BQSG6 3BXSG6 3BYSG6 3DASG6 3DDSG6 3DESG6 3DGSG6 3DLSG6 3DNSG6 3DPSG6 3DUSG6 3DWSG6 3DZSG6 3EASG6 3EBSG6 3EDSG6 3EESG6 3EFSG6 3EGSG6 3EJSG6 3ELSG6 3ENSG6 3EPSG6 3EQSG6 3ERSG6 3ESSG6 3ETSG6 3EUSG6 3EWSG6 3GYSG6 3GZSG6 3HDSG6 3HESG6 3HFSG6 3HGSG6 3HHSG6 3HJSG6 3HLSG6 3HQSG6 3HRSG6 3HSSG6 3HTSG6 3HUSG6 3HWSG6 3HXSG6 3HYSG6 3HZSG6 3JASG6 3JBSG6 3JDSG6 3JESG6 3JFSG6 3JHSG6 3JJSG6 3JNSG6 3JPSG6 3JRSG6 3JSSG6 3JTSG6 3JUSG6 3JWSG6 3JXSG6 3JYSG6 3JZSG6 3LBSG6 3LDSG6 3LESG6 3LFSG6 3LLSG6 3LNSG6 3LPSG6 3LRSG6 3LSSG6 3LTSG6 3LUSG6 3LWSG6 3LXSG6 3LYSG6 3NASG6 3NBSG6 3NDSG6 3NESG6 3NFSG6 3NGSG6 3NHSG6 3NJSG6 3NLSG6 3NNSG6 3NPSG6 3NQSG6 3NRSG6 3NWSG6 3NXSG6 3NZSG6 3PASG6 3PFSG6 3PHSG6 3PJSG6 3PLSG6 3PNSG6 3PQSG6 3PRSG6 3PTSG6 3PUSG6 3PWSG6 3PXSG6 3PYSG6 3PZSG6 3QASG6 3QBSG6 3QDSG6 3QJSG6 3QLSG6 3QNSG6 3QPSG6 3QRSG6 3QSSG6 3QTSG6 3QUSG6 3QWSG6 3QXSG6 3QYSG6 3QZSG6 3RASG6 3RBSG6 3RDSG6 3RESG6 3RFSG6 3RGSG6 3RHSG6 3RJSG6 3RLSG6 3RNSG6 3RPSG6 3RQSG6 3RRSG6 3RSSG6 3RTSG6 3RUSG6 3RWSG6 3SASG6 3SBSG6 3SDSG6 3SESG6 3SFSG6 3SGSG6 3SHSG6 3SJSG6 3SLSG6 3SPSG6 3SQSG6 3SRSG6 3SSSG6 3STSG6 3TASG6 3TBSG6 3TGSG6 3THSG6 3TPSG6 3TQSG6 3TRSG6 3TSSG6 3TTSG6 3TUSG6 3TXSG6 3TYSG6 3TZSG6 3UASG6 3UBSG6 3UDSG6 3UESG6 3UFSG6 3UGSG6 3WASG6 3WXSG6 3XUSG6 3XYSG6 3ZU

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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