SG6 1 postcode sector in the SG6 district

SG6 1 is a sector of the SG6 district: every postcode that starts SG6 1. It has 217 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 1 sector, by flood risk

Map of every postcode in the SG6 1 sector, by flood risk Of the 217 postcodes in the SG6 1 sector that ONS places, 4 have a home or business at high risk, 1 are at medium risk at worst, 5 are at low risk at worst and 207 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. A1(M)A505 SG6 1AA: not on the flood risk listSG6 1AB: not on the flood risk listSG6 1AD: not on the flood risk listSG6 1AE: not on the flood risk listSG6 1AG: not on the flood risk listSG6 1AH: not on the flood risk listSG6 1AJ: not on the flood risk listSG6 1AL: not on the flood risk listSG6 1AP: not on the flood risk listSG6 1AQ: not on the flood risk listSG6 1AR: not on the flood risk listSG6 1AS: not on the flood risk listSG6 1AT: not on the flood risk listSG6 1AW: not on the flood risk listSG6 1AX: not on the flood risk listSG6 1AY: not on the flood risk listSG6 1AZ: not on the flood risk listSG6 1BE: not on the flood risk listSG6 1BL: not on the flood risk listSG6 1BP: not on the flood risk listSG6 1BS: not on the flood risk listSG6 1BT: not on the flood risk listSG6 1BU: not on the flood risk listSG6 1BX: not on the flood risk listSG6 1BY: not on the flood risk listSG6 1BZ: not on the flood risk listSG6 1DA: not on the flood risk listSG6 1DB: not on the flood risk listSG6 1DD: not on the flood risk listSG6 1DE: not on the flood risk listSG6 1DF: not on the flood risk listSG6 1DG: not on the flood risk listSG6 1DH: not on the flood risk listSG6 1DJ: not on the flood risk listSG6 1DL: not on the flood risk listSG6 1DN: not on the flood risk listSG6 1DP: not on the flood risk listSG6 1DQ: not on the flood risk listSG6 1DR: not on the flood risk listSG6 1DS: not on the flood risk listSG6 1DT: not on the flood risk listSG6 1DU: not on the flood risk listSG6 1DW: not on the flood risk listSG6 1DX: not on the flood risk listSG6 1DY: not on the flood risk listSG6 1DZ: not on the flood risk listSG6 1EA: not on the flood risk listSG6 1EB: not on the flood risk listSG6 1ED: not on the flood risk listSG6 1EF: not on the flood risk listSG6 1EG: not on the flood risk listSG6 1EH: not on the flood risk listSG6 1EJ: not on the flood risk listSG6 1EL: not on the flood risk listSG6 1EQ: not on the flood risk listSG6 1ET: not on the flood risk listSG6 1EX: not on the flood risk listSG6 1FA: not on the flood risk listSG6 1FB: not on the flood risk listSG6 1FD: not on the flood risk listSG6 1FE: not on the flood risk listSG6 1FF: not on the flood risk listSG6 1FH: not on the flood risk listSG6 1FJ: not on the flood risk listSG6 1FL: not on the flood risk listSG6 1FN: not on the flood risk listSG6 1FP: not on the flood risk listSG6 1FQ: not on the flood risk listSG6 1FR: not on the flood risk listSG6 1FT: not on the flood risk listSG6 1FU: not on the flood risk listSG6 1FW: not on the flood risk listSG6 1FX: not on the flood risk listSG6 1FY: not on the flood risk listSG6 1FZ: not on the flood risk listSG6 1GB: not on the flood risk listSG6 1GH: not on the flood risk listSG6 1GJ: not on the flood risk listSG6 1GL: not on the flood risk listSG6 1GP: not on the flood risk listSG6 1GQ: not on the flood risk listSG6 1GR: not on the flood risk listSG6 1GT: not on the flood risk listSG6 1GU: not on the flood risk listSG6 1HA: not on the flood risk listSG6 1HB: not on the flood risk listSG6 1HD: not on the flood risk listSG6 1HE: not on the flood risk listSG6 1HG: not on the flood risk listSG6 1HJ: not on the flood risk listSG6 1HN: not on the flood risk listSG6 1HP: not on the flood risk listSG6 1HQ: not on the flood risk listSG6 1HR: not on the flood risk listSG6 1HU: not on the flood risk listSG6 1HX: not on the flood risk listSG6 1JA: not on the flood risk listSG6 1JE: not on the flood risk listSG6 1JF: not on the flood risk listSG6 1JG: not on the flood risk listSG6 1JH: not on the flood risk listSG6 1JJ: not on the flood risk listSG6 1JS: not on the flood risk listSG6 1JT: not on the flood risk listSG6 1JW: not on the flood risk listSG6 1JX: not on the flood risk listSG6 1JY: not on the flood risk listSG6 1JZ: not on the flood risk listSG6 1LA: not on the flood risk listSG6 1LB: not on the flood risk listSG6 1LD: not on the flood risk listSG6 1LH: not on the flood risk listSG6 1LJ: not on the flood risk listSG6 1LL: not on the flood risk listSG6 1LN: not on the flood risk listSG6 1LP: not on the flood risk listSG6 1LU: not on the flood risk listSG6 1LW: not on the flood risk listSG6 1NA: not on the flood risk listSG6 1ND: not on the flood risk listSG6 1NE: not on the flood risk listSG6 1NH: not on the flood risk listSG6 1NP: not on the flood risk listSG6 1NR: not on the flood risk listSG6 1NT: not on the flood risk listSG6 1NU: not on the flood risk listSG6 1NW: not on the flood risk listSG6 1NX: not on the flood risk listSG6 1NY: not on the flood risk listSG6 1PF: not on the flood risk listSG6 1PH: not on the flood risk listSG6 1PJ: not on the flood risk listSG6 1PL: not on the flood risk listSG6 1PN: not on the flood risk listSG6 1PP: not on the flood risk listSG6 1PR: not on the flood risk listSG6 1PS: not on the flood risk listSG6 1PT: not on the flood risk listSG6 1PU: not on the flood risk listSG6 1PW: not on the flood risk listSG6 1PX: not on the flood risk listSG6 1PY: not on the flood risk listSG6 1PZ: not on the flood risk listSG6 1QA: not on the flood risk listSG6 1QB: not on the flood risk listSG6 1QD: not on the flood risk listSG6 1QE: not on the flood risk listSG6 1QF: not on the flood risk listSG6 1QG: not on the flood risk listSG6 1QL: not on the flood risk listSG6 1QQ: not on the flood risk listSG6 1QR: not on the flood risk listSG6 1QT: not on the flood risk listSG6 1QU: not on the flood risk listSG6 1QX: not on the flood risk listSG6 1QY: not on the flood risk listSG6 1QZ: not on the flood risk listSG6 1RD: not on the flood risk listSG6 1RE: not on the flood risk listSG6 1RF: not on the flood risk listSG6 1RG: not on the flood risk listSG6 1RH: not on the flood risk listSG6 1RJ: not on the flood risk listSG6 1RL: not on the flood risk listSG6 1RN: not on the flood risk listSG6 1RP: not on the flood risk listSG6 1RQ: not on the flood risk listSG6 1RU: not on the flood risk listSG6 1RW: not on the flood risk listSG6 1RX: not on the flood risk listSG6 1RY: not on the flood risk listSG6 1RZ: not on the flood risk listSG6 1SA: not on the flood risk listSG6 1SB: not on the flood risk listSG6 1SD: not on the flood risk listSG6 1SE: not on the flood risk listSG6 1SH: not on the flood risk listSG6 1SL: not on the flood risk listSG6 1SN: not on the flood risk listSG6 1SP: not on the flood risk listSG6 1SW: not on the flood risk listSG6 1SX: not on the flood risk listSG6 1SZ: not on the flood risk listSG6 1TA: not on the flood risk listSG6 1TB: not on the flood risk listSG6 1TD: not on the flood risk listSG6 1TN: not on the flood risk listSG6 1TU: not on the flood risk listSG6 1TX: not on the flood risk listSG6 1TY: not on the flood risk listSG6 1TZ: not on the flood risk listSG6 1UA: not on the flood risk listSG6 1UB: not on the flood risk listSG6 1UD: not on the flood risk listSG6 1UE: not on the flood risk listSG6 1UG: not on the flood risk listSG6 1UJ: not on the flood risk listSG6 1UP: not on the flood risk listSG6 1UW: not on the flood risk listSG6 1WB: not on the flood risk listSG6 1WG: not on the flood risk listSG6 1WH: not on the flood risk listSG6 1WL: not on the flood risk listSG6 1WN: not on the flood risk listSG6 1WT: not on the flood risk listSG6 1WU: not on the flood risk listSG6 1BH: low flood risk at worstSG6 1FG: low flood risk at worstSG6 1PQ: low flood risk at worstSG6 1SF: low flood risk at worstSG6 1SU: low flood risk at worstSG6 1QP: medium flood risk at worstSG6 1AN: high flood riskSG6 1QS: high flood riskSG6 1RS: high flood riskSG6 1SQ: high flood risk Letchworth Map of every postcode in the SG6 1 sector, by flood risk Of the 217 postcodes in the SG6 1 sector that ONS places, 4 have a home or business at high risk, 1 are at medium risk at worst, 5 are at low risk at worst and 207 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: 4
  • At medium risk at worst: 1
  • At low risk at worst: 5
  • At very low risk only: 0
  • Not on the at-risk list: 207

Of the 217 postcodes in the SG6 1 sector that ONS places, 4 have a home or business at high risk, 1 are at medium risk at worst, 5 are at low risk at worst and 207 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

The postcodes at high risk

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

SG6 1RS20 at high riskSG6 1SQ2 at high riskSG6 1AN2 at high riskSG6 1QS1 at high risk

What do homes sell for in SG6 1?

Homes in SG6 1 sold for a typical £375,525 in the 12 months to August 2026, across 56 sales, up 11.3% on the 12 months before, HM Land Registry's figures show.

£375,525 typical price, the 12 months to August 2026
£337,500 12 months to August 2025
▲ up 11.3% on the 12 months before
  • Detached £700,000 5 sales
  • Semi-detached £487,000 9 sales
  • Terraced £397,500 24 sales
  • Flat or maisonette £213,500 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 1. 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 1

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 1AASG6 1ABSG6 1ADSG6 1AESG6 1AGSG6 1AHSG6 1AJSG6 1ALSG6 1ANSG6 1APSG6 1AQSG6 1ARSG6 1ASSG6 1ATSG6 1AWSG6 1AXSG6 1AYSG6 1AZSG6 1BESG6 1BHSG6 1BLSG6 1BPSG6 1BSSG6 1BTSG6 1BUSG6 1BXSG6 1BYSG6 1BZSG6 1DASG6 1DBSG6 1DDSG6 1DESG6 1DFSG6 1DGSG6 1DHSG6 1DJSG6 1DLSG6 1DNSG6 1DPSG6 1DQSG6 1DRSG6 1DSSG6 1DTSG6 1DUSG6 1DWSG6 1DXSG6 1DYSG6 1DZSG6 1EASG6 1EBSG6 1EDSG6 1EFSG6 1EGSG6 1EHSG6 1EJSG6 1ELSG6 1EQSG6 1ETSG6 1EXSG6 1FASG6 1FBSG6 1FDSG6 1FESG6 1FFSG6 1FGSG6 1FHSG6 1FJSG6 1FLSG6 1FNSG6 1FPSG6 1FQSG6 1FRSG6 1FTSG6 1FUSG6 1FWSG6 1FXSG6 1FYSG6 1FZSG6 1GBSG6 1GHSG6 1GJSG6 1GLSG6 1GPSG6 1GQSG6 1GRSG6 1GTSG6 1GUSG6 1HASG6 1HBSG6 1HDSG6 1HESG6 1HGSG6 1HJSG6 1HNSG6 1HPSG6 1HQSG6 1HRSG6 1HUSG6 1HXSG6 1JASG6 1JESG6 1JFSG6 1JGSG6 1JHSG6 1JJSG6 1JSSG6 1JTSG6 1JWSG6 1JXSG6 1JYSG6 1JZSG6 1LASG6 1LBSG6 1LDSG6 1LHSG6 1LJSG6 1LLSG6 1LNSG6 1LPSG6 1LUSG6 1LWSG6 1NASG6 1NDSG6 1NESG6 1NHSG6 1NPSG6 1NRSG6 1NTSG6 1NUSG6 1NWSG6 1NXSG6 1NYSG6 1PFSG6 1PHSG6 1PJSG6 1PLSG6 1PNSG6 1PPSG6 1PQSG6 1PRSG6 1PSSG6 1PTSG6 1PUSG6 1PWSG6 1PXSG6 1PYSG6 1PZSG6 1QASG6 1QBSG6 1QDSG6 1QESG6 1QFSG6 1QGSG6 1QLSG6 1QPSG6 1QQSG6 1QRSG6 1QSSG6 1QTSG6 1QUSG6 1QXSG6 1QYSG6 1QZSG6 1RDSG6 1RESG6 1RFSG6 1RGSG6 1RHSG6 1RJSG6 1RLSG6 1RNSG6 1RPSG6 1RQSG6 1RRSG6 1RSSG6 1RUSG6 1RWSG6 1RXSG6 1RYSG6 1RZSG6 1SASG6 1SBSG6 1SDSG6 1SESG6 1SFSG6 1SHSG6 1SLSG6 1SNSG6 1SPSG6 1SQSG6 1SUSG6 1SWSG6 1SXSG6 1SZSG6 1TASG6 1TBSG6 1TDSG6 1TNSG6 1TUSG6 1TXSG6 1TYSG6 1TZSG6 1UASG6 1UBSG6 1UDSG6 1UESG6 1UGSG6 1UJSG6 1UPSG6 1UWSG6 1WBSG6 1WGSG6 1WHSG6 1WLSG6 1WNSG6 1WTSG6 1WU

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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