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, and which are new since 2020

Map of every postcode in the SG6 3 sector, by new since 2020 Of the 195 postcodes in the SG6 3 sector that ONS places, 1 are new since 2020 and 194 were in use before 2020. 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: before 2020SG6 3AE: before 2020SG6 3AL: before 2020SG6 3AN: before 2020SG6 3AQ: before 2020SG6 3AR: before 2020SG6 3AU: before 2020SG6 3AW: before 2020SG6 3AY: before 2020SG6 3AZ: before 2020SG6 3BA: before 2020SG6 3BB: before 2020SG6 3BE: before 2020SG6 3BF: before 2020SG6 3BJ: before 2020SG6 3BL: before 2020SG6 3BQ: before 2020SG6 3BX: before 2020SG6 3BY: before 2020SG6 3DA: before 2020SG6 3DD: before 2020SG6 3DE: before 2020SG6 3DG: before 2020SG6 3DL: before 2020SG6 3DN: before 2020SG6 3DP: before 2020SG6 3DU: before 2020SG6 3DW: before 2020SG6 3DZ: before 2020SG6 3EA: before 2020SG6 3EB: before 2020SG6 3ED: before 2020SG6 3EE: before 2020SG6 3EF: before 2020SG6 3EG: before 2020SG6 3EJ: before 2020SG6 3EL: before 2020SG6 3EN: before 2020SG6 3EQ: before 2020SG6 3ER: before 2020SG6 3ES: before 2020SG6 3ET: before 2020SG6 3EU: before 2020SG6 3EW: before 2020SG6 3GY: before 2020SG6 3GZ: before 2020SG6 3HD: before 2020SG6 3HE: before 2020SG6 3HF: before 2020SG6 3HG: before 2020SG6 3HH: before 2020SG6 3HJ: before 2020SG6 3HL: before 2020SG6 3HQ: before 2020SG6 3HR: before 2020SG6 3HS: before 2020SG6 3HT: before 2020SG6 3HU: before 2020SG6 3HW: before 2020SG6 3HX: before 2020SG6 3HY: before 2020SG6 3HZ: before 2020SG6 3JA: before 2020SG6 3JB: before 2020SG6 3JD: before 2020SG6 3JE: before 2020SG6 3JF: before 2020SG6 3JH: before 2020SG6 3JJ: before 2020SG6 3JN: before 2020SG6 3JP: before 2020SG6 3JR: before 2020SG6 3JS: before 2020SG6 3JT: before 2020SG6 3JU: before 2020SG6 3JW: before 2020SG6 3JX: before 2020SG6 3JY: before 2020SG6 3JZ: before 2020SG6 3LB: before 2020SG6 3LD: before 2020SG6 3LE: before 2020SG6 3LF: before 2020SG6 3LL: before 2020SG6 3LN: before 2020SG6 3LP: before 2020SG6 3LR: before 2020SG6 3LS: before 2020SG6 3LT: before 2020SG6 3LU: before 2020SG6 3LW: before 2020SG6 3LX: before 2020SG6 3LY: before 2020SG6 3NA: before 2020SG6 3NB: before 2020SG6 3ND: before 2020SG6 3NE: before 2020SG6 3NF: before 2020SG6 3NG: before 2020SG6 3NH: before 2020SG6 3NJ: before 2020SG6 3NL: before 2020SG6 3NN: before 2020SG6 3NP: before 2020SG6 3NQ: before 2020SG6 3NR: before 2020SG6 3NW: before 2020SG6 3NX: before 2020SG6 3NZ: before 2020SG6 3PA: before 2020SG6 3PF: before 2020SG6 3PH: before 2020SG6 3PJ: before 2020SG6 3PL: before 2020SG6 3PN: before 2020SG6 3PQ: before 2020SG6 3PR: before 2020SG6 3PT: before 2020SG6 3PU: before 2020SG6 3PW: before 2020SG6 3PX: before 2020SG6 3PY: before 2020SG6 3PZ: before 2020SG6 3QA: before 2020SG6 3QB: before 2020SG6 3QD: before 2020SG6 3QJ: before 2020SG6 3QL: before 2020SG6 3QN: before 2020SG6 3QP: before 2020SG6 3QR: before 2020SG6 3QS: before 2020SG6 3QT: before 2020SG6 3QU: before 2020SG6 3QW: before 2020SG6 3QX: before 2020SG6 3QY: before 2020SG6 3QZ: before 2020SG6 3RA: before 2020SG6 3RB: before 2020SG6 3RD: before 2020SG6 3RE: before 2020SG6 3RF: before 2020SG6 3RG: before 2020SG6 3RH: before 2020SG6 3RJ: before 2020SG6 3RL: before 2020SG6 3RN: before 2020SG6 3RP: before 2020SG6 3RQ: before 2020SG6 3RR: before 2020SG6 3RS: before 2020SG6 3RT: before 2020SG6 3RU: before 2020SG6 3RW: before 2020SG6 3SA: before 2020SG6 3SB: before 2020SG6 3SD: before 2020SG6 3SE: before 2020SG6 3SF: before 2020SG6 3SG: before 2020SG6 3SH: before 2020SG6 3SJ: before 2020SG6 3SL: before 2020SG6 3SP: before 2020SG6 3SQ: before 2020SG6 3SR: before 2020SG6 3SS: before 2020SG6 3ST: before 2020SG6 3TA: before 2020SG6 3TB: before 2020SG6 3TG: before 2020SG6 3TH: before 2020SG6 3TP: before 2020SG6 3TQ: before 2020SG6 3TR: before 2020SG6 3TS: before 2020SG6 3TT: before 2020SG6 3TU: before 2020SG6 3TX: before 2020SG6 3TY: before 2020SG6 3TZ: before 2020SG6 3UA: before 2020SG6 3UB: before 2020SG6 3UD: before 2020SG6 3UE: before 2020SG6 3UF: before 2020SG6 3UG: before 2020SG6 3WA: before 2020SG6 3XU: before 2020SG6 3XY: before 2020SG6 3EP: new since 2020 Letchworth Map of every postcode in the SG6 3 sector, by new since 2020 Of the 195 postcodes in the SG6 3 sector that ONS places, 1 are new since 2020 and 194 were in use before 2020. 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
  • New since 2020: 1
  • In use before 2020: 194

Of the 195 postcodes in the SG6 3 sector that ONS places, 1 are new since 2020 and 194 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 3EPDecember 2020

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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