SG6 4 postcode sector in the SG6 district

SG6 4 is a sector of the SG6 district: every postcode that starts SG6 4. It has 268 postcodes in use, 3 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 4 sector, by flood risk

Map of every postcode in the SG6 4 sector, by flood risk Of the 268 postcodes in the SG6 4 sector that ONS places, 1 are at low risk at worst and 267 are not on the Environment Agency's at-risk list. Places named: Letchworth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. SG6 4AA: not on the flood risk listSG6 4AD: not on the flood risk listSG6 4AE: not on the flood risk listSG6 4AL: not on the flood risk listSG6 4AN: not on the flood risk listSG6 4AR: not on the flood risk listSG6 4AT: not on the flood risk listSG6 4AU: not on the flood risk listSG6 4AW: not on the flood risk listSG6 4AX: not on the flood risk listSG6 4AZ: not on the flood risk listSG6 4BD: not on the flood risk listSG6 4BE: not on the flood risk listSG6 4BG: not on the flood risk listSG6 4BH: not on the flood risk listSG6 4BJ: not on the flood risk listSG6 4BL: not on the flood risk listSG6 4BN: not on the flood risk listSG6 4BP: not on the flood risk listSG6 4BQ: not on the flood risk listSG6 4BS: not on the flood risk listSG6 4BW: not on the flood risk listSG6 4BY: not on the flood risk listSG6 4BZ: not on the flood risk listSG6 4DA: not on the flood risk listSG6 4DB: not on the flood risk listSG6 4DD: not on the flood risk listSG6 4DE: not on the flood risk listSG6 4DF: not on the flood risk listSG6 4DG: not on the flood risk listSG6 4DJ: not on the flood risk listSG6 4DL: not on the flood risk listSG6 4DN: not on the flood risk listSG6 4DP: not on the flood risk listSG6 4DQ: not on the flood risk listSG6 4DR: not on the flood risk listSG6 4DS: not on the flood risk listSG6 4DT: not on the flood risk listSG6 4DU: not on the flood risk listSG6 4DW: not on the flood risk listSG6 4DX: not on the flood risk listSG6 4DY: not on the flood risk listSG6 4DZ: not on the flood risk listSG6 4EA: not on the flood risk listSG6 4EB: not on the flood risk listSG6 4ED: not on the flood risk listSG6 4EE: not on the flood risk listSG6 4EF: not on the flood risk listSG6 4EG: not on the flood risk listSG6 4EH: not on the flood risk listSG6 4EJ: not on the flood risk listSG6 4EN: not on the flood risk listSG6 4EQ: not on the flood risk listSG6 4ER: not on the flood risk listSG6 4ES: not on the flood risk listSG6 4ET: not on the flood risk listSG6 4EX: not on the flood risk listSG6 4EY: not on the flood risk listSG6 4EZ: not on the flood risk listSG6 4FA: not on the flood risk listSG6 4FW: not on the flood risk listSG6 4GY: not on the flood risk listSG6 4HE: not on the flood risk listSG6 4HF: not on the flood risk listSG6 4HG: not on the flood risk listSG6 4HH: not on the flood risk listSG6 4HJ: not on the flood risk listSG6 4HL: not on the flood risk listSG6 4HN: not on the flood risk listSG6 4HP: not on the flood risk listSG6 4HQ: not on the flood risk listSG6 4HR: not on the flood risk listSG6 4HS: not on the flood risk listSG6 4HT: not on the flood risk listSG6 4HW: not on the flood risk listSG6 4HY: not on the flood risk listSG6 4HZ: not on the flood risk listSG6 4JA: not on the flood risk listSG6 4JB: not on the flood risk listSG6 4JD: not on the flood risk listSG6 4JE: not on the flood risk listSG6 4JF: not on the flood risk listSG6 4JG: not on the flood risk listSG6 4JH: not on the flood risk listSG6 4JJ: not on the flood risk listSG6 4JL: not on the flood risk listSG6 4JN: not on the flood risk listSG6 4JQ: not on the flood risk listSG6 4JR: not on the flood risk listSG6 4JS: not on the flood risk listSG6 4JT: not on the flood risk listSG6 4JU: not on the flood risk listSG6 4JW: not on the flood risk listSG6 4JX: not on the flood risk listSG6 4JY: not on the flood risk listSG6 4JZ: not on the flood risk listSG6 4LA: not on the flood risk listSG6 4LB: not on the flood risk listSG6 4LD: not on the flood risk listSG6 4LF: not on the flood risk listSG6 4LG: not on the flood risk listSG6 4LH: not on the flood risk listSG6 4LJ: not on the flood risk listSG6 4LL: not on the flood risk listSG6 4LN: not on the flood risk listSG6 4LP: not on the flood risk listSG6 4LQ: not on the flood risk listSG6 4LR: not on the flood risk listSG6 4LS: not on the flood risk listSG6 4LT: not on the flood risk listSG6 4LU: not on the flood risk listSG6 4LW: not on the flood risk listSG6 4LX: not on the flood risk listSG6 4LY: not on the flood risk listSG6 4LZ: not on the flood risk listSG6 4NA: not on the flood risk listSG6 4NB: not on the flood risk listSG6 4ND: not on the flood risk listSG6 4NE: not on the flood risk listSG6 4NF: not on the flood risk listSG6 4NG: not on the flood risk listSG6 4NH: not on the flood risk listSG6 4NL: not on the flood risk listSG6 4NN: not on the flood risk listSG6 4NP: not on the flood risk listSG6 4NQ: not on the flood risk listSG6 4NR: not on the flood risk listSG6 4NS: not on the flood risk listSG6 4NT: not on the flood risk listSG6 4NW: not on the flood risk listSG6 4NZ: not on the flood risk listSG6 4PA: not on the flood risk listSG6 4PB: not on the flood risk listSG6 4PD: not on the flood risk listSG6 4PE: not on the flood risk listSG6 4PF: not on the flood risk listSG6 4PG: not on the flood risk listSG6 4PH: not on the flood risk listSG6 4PJ: not on the flood risk listSG6 4PL: not on the flood risk listSG6 4PN: not on the flood risk listSG6 4PP: not on the flood risk listSG6 4PQ: not on the flood risk listSG6 4PR: not on the flood risk listSG6 4PS: not on the flood risk listSG6 4PT: not on the flood risk listSG6 4PU: not on the flood risk listSG6 4PX: not on the flood risk listSG6 4PY: not on the flood risk listSG6 4PZ: not on the flood risk listSG6 4QA: not on the flood risk listSG6 4QB: not on the flood risk listSG6 4QD: not on the flood risk listSG6 4QE: not on the flood risk listSG6 4QF: not on the flood risk listSG6 4QH: not on the flood risk listSG6 4QJ: not on the flood risk listSG6 4QL: not on the flood risk listSG6 4QN: not on the flood risk listSG6 4QP: not on the flood risk listSG6 4QR: not on the flood risk listSG6 4QS: not on the flood risk listSG6 4QT: not on the flood risk listSG6 4QU: not on the flood risk listSG6 4QW: not on the flood risk listSG6 4QX: not on the flood risk listSG6 4QY: not on the flood risk listSG6 4QZ: not on the flood risk listSG6 4RA: not on the flood risk listSG6 4RB: not on the flood risk listSG6 4RD: not on the flood risk listSG6 4RE: not on the flood risk listSG6 4RF: not on the flood risk listSG6 4RG: not on the flood risk listSG6 4RH: not on the flood risk listSG6 4RJ: not on the flood risk listSG6 4RL: not on the flood risk listSG6 4RN: not on the flood risk listSG6 4RP: not on the flood risk listSG6 4RQ: not on the flood risk listSG6 4RR: not on the flood risk listSG6 4RS: not on the flood risk listSG6 4RW: not on the flood risk listSG6 4RX: not on the flood risk listSG6 4RY: not on the flood risk listSG6 4RZ: not on the flood risk listSG6 4SA: not on the flood risk listSG6 4SB: not on the flood risk listSG6 4SE: not on the flood risk listSG6 4SF: not on the flood risk listSG6 4SG: not on the flood risk listSG6 4SH: not on the flood risk listSG6 4SJ: not on the flood risk listSG6 4SL: not on the flood risk listSG6 4SN: not on the flood risk listSG6 4SP: not on the flood risk listSG6 4SQ: not on the flood risk listSG6 4SR: not on the flood risk listSG6 4SS: not on the flood risk listSG6 4ST: not on the flood risk listSG6 4SU: not on the flood risk listSG6 4SW: not on the flood risk listSG6 4SX: not on the flood risk listSG6 4SY: not on the flood risk listSG6 4SZ: not on the flood risk listSG6 4TA: not on the flood risk listSG6 4TB: not on the flood risk listSG6 4TD: not on the flood risk listSG6 4TF: not on the flood risk listSG6 4TG: not on the flood risk listSG6 4TH: not on the flood risk listSG6 4TJ: not on the flood risk listSG6 4TL: not on the flood risk listSG6 4TN: not on the flood risk listSG6 4TQ: not on the flood risk listSG6 4TR: not on the flood risk listSG6 4TS: not on the flood risk listSG6 4TT: not on the flood risk listSG6 4TU: not on the flood risk listSG6 4TW: not on the flood risk listSG6 4TX: not on the flood risk listSG6 4TY: not on the flood risk listSG6 4TZ: not on the flood risk listSG6 4UA: not on the flood risk listSG6 4UB: not on the flood risk listSG6 4UD: not on the flood risk listSG6 4UF: not on the flood risk listSG6 4UG: not on the flood risk listSG6 4UJ: not on the flood risk listSG6 4UL: not on the flood risk listSG6 4UN: not on the flood risk listSG6 4UP: not on the flood risk listSG6 4UR: not on the flood risk listSG6 4UT: not on the flood risk listSG6 4UU: not on the flood risk listSG6 4UW: not on the flood risk listSG6 4UX: not on the flood risk listSG6 4UY: not on the flood risk listSG6 4UZ: not on the flood risk listSG6 4WA: not on the flood risk listSG6 4XA: not on the flood risk listSG6 4XB: not on the flood risk listSG6 4XD: not on the flood risk listSG6 4XE: not on the flood risk listSG6 4XF: not on the flood risk listSG6 4XG: not on the flood risk listSG6 4XH: not on the flood risk listSG6 4XJ: not on the flood risk listSG6 4XL: not on the flood risk listSG6 4XN: not on the flood risk listSG6 4XP: not on the flood risk listSG6 4XQ: not on the flood risk listSG6 4XR: not on the flood risk listSG6 4XS: not on the flood risk listSG6 4XT: not on the flood risk listSG6 4XU: not on the flood risk listSG6 4XX: not on the flood risk listSG6 4XY: not on the flood risk listSG6 4XZ: not on the flood risk listSG6 4YE: not on the flood risk listSG6 4YF: not on the flood risk listSG6 4YH: not on the flood risk listSG6 4YJ: not on the flood risk listSG6 4YL: not on the flood risk listSG6 4YN: not on the flood risk listSG6 4YQ: not on the flood risk listSG6 4UE: low flood risk at worst Letchworth Map of every postcode in the SG6 4 sector, by flood risk Of the 268 postcodes in the SG6 4 sector that ONS places, 1 are at low risk at worst and 267 are not on the Environment Agency's at-risk list. Places named: Letchworth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Letchworth
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 1
  • At very low risk only: 0
  • Not on the at-risk list: 267

Of the 268 postcodes in the SG6 4 sector that ONS places, 1 are at low risk at worst and 267 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

What do homes sell for in SG6 4?

Homes in SG6 4 sold for a typical £374,115 in the 12 months to August 2026, across 116 sales, down 0.2% on the 12 months before, HM Land Registry's figures show.

£374,115 typical price, the 12 months to August 2026
£375,000 12 months to August 2025
▼ down 0.2% on the 12 months before
  • Detached £547,500 16 sales
  • Semi-detached £477,500 35 sales
  • Terraced £335,000 47 sales
  • Flat or maisonette £202,500 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 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 SG6 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.

SG6 4AASG6 4ADSG6 4AESG6 4ALSG6 4ANSG6 4ARSG6 4ATSG6 4AUSG6 4AWSG6 4AXSG6 4AZSG6 4BASG6 4BDSG6 4BESG6 4BGSG6 4BHSG6 4BJSG6 4BLSG6 4BNSG6 4BPSG6 4BQSG6 4BSSG6 4BWSG6 4BYSG6 4BZSG6 4DASG6 4DBSG6 4DDSG6 4DESG6 4DFSG6 4DGSG6 4DJSG6 4DLSG6 4DNSG6 4DPSG6 4DQSG6 4DRSG6 4DSSG6 4DTSG6 4DUSG6 4DWSG6 4DXSG6 4DYSG6 4DZSG6 4EASG6 4EBSG6 4EDSG6 4EESG6 4EFSG6 4EGSG6 4EHSG6 4EJSG6 4ENSG6 4EQSG6 4ERSG6 4ESSG6 4ETSG6 4EXSG6 4EYSG6 4EZSG6 4FASG6 4FWSG6 4GYSG6 4HESG6 4HFSG6 4HGSG6 4HHSG6 4HJSG6 4HLSG6 4HNSG6 4HPSG6 4HQSG6 4HRSG6 4HSSG6 4HTSG6 4HWSG6 4HYSG6 4HZSG6 4JASG6 4JBSG6 4JDSG6 4JESG6 4JFSG6 4JGSG6 4JHSG6 4JJSG6 4JLSG6 4JNSG6 4JQSG6 4JRSG6 4JSSG6 4JTSG6 4JUSG6 4JWSG6 4JXSG6 4JYSG6 4JZSG6 4LASG6 4LBSG6 4LDSG6 4LFSG6 4LGSG6 4LHSG6 4LJSG6 4LLSG6 4LNSG6 4LPSG6 4LQSG6 4LRSG6 4LSSG6 4LTSG6 4LUSG6 4LWSG6 4LXSG6 4LYSG6 4LZSG6 4NASG6 4NBSG6 4NDSG6 4NESG6 4NFSG6 4NGSG6 4NHSG6 4NLSG6 4NNSG6 4NPSG6 4NQSG6 4NRSG6 4NSSG6 4NTSG6 4NWSG6 4NZSG6 4PASG6 4PBSG6 4PDSG6 4PESG6 4PFSG6 4PGSG6 4PHSG6 4PJSG6 4PLSG6 4PNSG6 4PPSG6 4PQSG6 4PRSG6 4PSSG6 4PTSG6 4PUSG6 4PXSG6 4PYSG6 4PZSG6 4QASG6 4QBSG6 4QDSG6 4QESG6 4QFSG6 4QHSG6 4QJSG6 4QLSG6 4QNSG6 4QPSG6 4QRSG6 4QSSG6 4QTSG6 4QUSG6 4QWSG6 4QXSG6 4QYSG6 4QZSG6 4RASG6 4RBSG6 4RDSG6 4RESG6 4RFSG6 4RGSG6 4RHSG6 4RJSG6 4RLSG6 4RNSG6 4RPSG6 4RQSG6 4RRSG6 4RSSG6 4RWSG6 4RXSG6 4RYSG6 4RZSG6 4SASG6 4SBSG6 4SESG6 4SFSG6 4SGSG6 4SHSG6 4SJSG6 4SLSG6 4SNSG6 4SPSG6 4SQSG6 4SRSG6 4SSSG6 4STSG6 4SUSG6 4SWSG6 4SXSG6 4SYSG6 4SZSG6 4TASG6 4TBSG6 4TDSG6 4TFSG6 4TGSG6 4THSG6 4TJSG6 4TLSG6 4TNSG6 4TQSG6 4TRSG6 4TSSG6 4TTSG6 4TUSG6 4TWSG6 4TXSG6 4TYSG6 4TZSG6 4UASG6 4UBSG6 4UDSG6 4UESG6 4UFSG6 4UGSG6 4UJSG6 4ULSG6 4UNSG6 4UPSG6 4URSG6 4UTSG6 4UUSG6 4UWSG6 4UXSG6 4UYSG6 4UZSG6 4WASG6 4XASG6 4XBSG6 4XDSG6 4XESG6 4XFSG6 4XGSG6 4XHSG6 4XJSG6 4XLSG6 4XNSG6 4XPSG6 4XQSG6 4XRSG6 4XSSG6 4XTSG6 4XUSG6 4XXSG6 4XYSG6 4XZSG6 4YESG6 4YFSG6 4YHSG6 4YJSG6 4YLSG6 4YNSG6 4YQ

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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