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, and which are new since 2020

Map of every postcode in the SG6 4 sector, by new since 2020 Of the 268 postcodes in the SG6 4 sector that ONS places, 1 are new since 2020 and 267 were in use before 2020. Places named: Letchworth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. SG6 4AA: before 2020SG6 4AD: before 2020SG6 4AE: before 2020SG6 4AL: before 2020SG6 4AN: before 2020SG6 4AR: before 2020SG6 4AT: before 2020SG6 4AU: before 2020SG6 4AW: before 2020SG6 4AX: before 2020SG6 4AZ: before 2020SG6 4BD: before 2020SG6 4BE: before 2020SG6 4BG: before 2020SG6 4BH: before 2020SG6 4BJ: before 2020SG6 4BL: before 2020SG6 4BN: before 2020SG6 4BP: before 2020SG6 4BQ: before 2020SG6 4BS: before 2020SG6 4BW: before 2020SG6 4BY: before 2020SG6 4BZ: before 2020SG6 4DA: before 2020SG6 4DB: before 2020SG6 4DD: before 2020SG6 4DE: before 2020SG6 4DF: before 2020SG6 4DG: before 2020SG6 4DJ: before 2020SG6 4DL: before 2020SG6 4DN: before 2020SG6 4DP: before 2020SG6 4DQ: before 2020SG6 4DR: before 2020SG6 4DS: before 2020SG6 4DT: before 2020SG6 4DU: before 2020SG6 4DW: before 2020SG6 4DX: before 2020SG6 4DY: before 2020SG6 4DZ: before 2020SG6 4EA: before 2020SG6 4EB: before 2020SG6 4ED: before 2020SG6 4EE: before 2020SG6 4EF: before 2020SG6 4EG: before 2020SG6 4EH: before 2020SG6 4EJ: before 2020SG6 4EQ: before 2020SG6 4ER: before 2020SG6 4ES: before 2020SG6 4ET: before 2020SG6 4EX: before 2020SG6 4EY: before 2020SG6 4EZ: before 2020SG6 4FA: before 2020SG6 4FW: before 2020SG6 4GY: before 2020SG6 4HE: before 2020SG6 4HF: before 2020SG6 4HG: before 2020SG6 4HH: before 2020SG6 4HJ: before 2020SG6 4HL: before 2020SG6 4HN: before 2020SG6 4HP: before 2020SG6 4HQ: before 2020SG6 4HR: before 2020SG6 4HS: before 2020SG6 4HT: before 2020SG6 4HW: before 2020SG6 4HY: before 2020SG6 4HZ: before 2020SG6 4JA: before 2020SG6 4JB: before 2020SG6 4JD: before 2020SG6 4JE: before 2020SG6 4JF: before 2020SG6 4JG: before 2020SG6 4JH: before 2020SG6 4JJ: before 2020SG6 4JL: before 2020SG6 4JN: before 2020SG6 4JQ: before 2020SG6 4JR: before 2020SG6 4JS: before 2020SG6 4JT: before 2020SG6 4JU: before 2020SG6 4JW: before 2020SG6 4JX: before 2020SG6 4JY: before 2020SG6 4JZ: before 2020SG6 4LA: before 2020SG6 4LB: before 2020SG6 4LD: before 2020SG6 4LF: before 2020SG6 4LG: before 2020SG6 4LH: before 2020SG6 4LJ: before 2020SG6 4LL: before 2020SG6 4LN: before 2020SG6 4LP: before 2020SG6 4LQ: before 2020SG6 4LR: before 2020SG6 4LS: before 2020SG6 4LT: before 2020SG6 4LU: before 2020SG6 4LW: before 2020SG6 4LX: before 2020SG6 4LY: before 2020SG6 4LZ: before 2020SG6 4NA: before 2020SG6 4NB: before 2020SG6 4ND: before 2020SG6 4NE: before 2020SG6 4NF: before 2020SG6 4NG: before 2020SG6 4NH: before 2020SG6 4NL: before 2020SG6 4NN: before 2020SG6 4NP: before 2020SG6 4NQ: before 2020SG6 4NR: before 2020SG6 4NS: before 2020SG6 4NT: before 2020SG6 4NW: before 2020SG6 4NZ: before 2020SG6 4PA: before 2020SG6 4PB: before 2020SG6 4PD: before 2020SG6 4PE: before 2020SG6 4PF: before 2020SG6 4PG: before 2020SG6 4PH: before 2020SG6 4PJ: before 2020SG6 4PL: before 2020SG6 4PN: before 2020SG6 4PP: before 2020SG6 4PQ: before 2020SG6 4PR: before 2020SG6 4PS: before 2020SG6 4PT: before 2020SG6 4PU: before 2020SG6 4PX: before 2020SG6 4PY: before 2020SG6 4PZ: before 2020SG6 4QA: before 2020SG6 4QB: before 2020SG6 4QD: before 2020SG6 4QE: before 2020SG6 4QF: before 2020SG6 4QH: before 2020SG6 4QJ: before 2020SG6 4QL: before 2020SG6 4QN: before 2020SG6 4QP: before 2020SG6 4QR: before 2020SG6 4QS: before 2020SG6 4QT: before 2020SG6 4QU: before 2020SG6 4QW: before 2020SG6 4QX: before 2020SG6 4QY: before 2020SG6 4QZ: before 2020SG6 4RA: before 2020SG6 4RB: before 2020SG6 4RD: before 2020SG6 4RE: before 2020SG6 4RF: before 2020SG6 4RG: before 2020SG6 4RH: before 2020SG6 4RJ: before 2020SG6 4RL: before 2020SG6 4RN: before 2020SG6 4RP: before 2020SG6 4RQ: before 2020SG6 4RR: before 2020SG6 4RS: before 2020SG6 4RW: before 2020SG6 4RX: before 2020SG6 4RY: before 2020SG6 4RZ: before 2020SG6 4SA: before 2020SG6 4SB: before 2020SG6 4SE: before 2020SG6 4SF: before 2020SG6 4SG: before 2020SG6 4SH: before 2020SG6 4SJ: before 2020SG6 4SL: before 2020SG6 4SN: before 2020SG6 4SP: before 2020SG6 4SQ: before 2020SG6 4SR: before 2020SG6 4SS: before 2020SG6 4ST: before 2020SG6 4SU: before 2020SG6 4SW: before 2020SG6 4SX: before 2020SG6 4SY: before 2020SG6 4SZ: before 2020SG6 4TA: before 2020SG6 4TB: before 2020SG6 4TD: before 2020SG6 4TF: before 2020SG6 4TG: before 2020SG6 4TH: before 2020SG6 4TJ: before 2020SG6 4TL: before 2020SG6 4TN: before 2020SG6 4TQ: before 2020SG6 4TR: before 2020SG6 4TS: before 2020SG6 4TT: before 2020SG6 4TU: before 2020SG6 4TW: before 2020SG6 4TX: before 2020SG6 4TY: before 2020SG6 4TZ: before 2020SG6 4UA: before 2020SG6 4UB: before 2020SG6 4UD: before 2020SG6 4UE: before 2020SG6 4UF: before 2020SG6 4UG: before 2020SG6 4UJ: before 2020SG6 4UL: before 2020SG6 4UN: before 2020SG6 4UP: before 2020SG6 4UR: before 2020SG6 4UT: before 2020SG6 4UU: before 2020SG6 4UW: before 2020SG6 4UX: before 2020SG6 4UY: before 2020SG6 4UZ: before 2020SG6 4WA: before 2020SG6 4XA: before 2020SG6 4XB: before 2020SG6 4XD: before 2020SG6 4XE: before 2020SG6 4XF: before 2020SG6 4XG: before 2020SG6 4XH: before 2020SG6 4XJ: before 2020SG6 4XL: before 2020SG6 4XN: before 2020SG6 4XP: before 2020SG6 4XQ: before 2020SG6 4XR: before 2020SG6 4XS: before 2020SG6 4XT: before 2020SG6 4XU: before 2020SG6 4XX: before 2020SG6 4XY: before 2020SG6 4XZ: before 2020SG6 4YE: before 2020SG6 4YF: before 2020SG6 4YH: before 2020SG6 4YJ: before 2020SG6 4YL: before 2020SG6 4YN: before 2020SG6 4YQ: before 2020SG6 4EN: new since 2020 Letchworth Map of every postcode in the SG6 4 sector, by new since 2020 Of the 268 postcodes in the SG6 4 sector that ONS places, 1 are new since 2020 and 267 were in use before 2020. Places named: Letchworth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Letchworth
  • New since 2020: 1
  • In use before 2020: 267

Of the 268 postcodes in the SG6 4 sector that ONS places, 1 are new since 2020 and 267 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. 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; when each came into use: the same directory; 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 newest postcode

SG6 4ENSeptember 2020

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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