SG3 6 postcode sector in the SG3 district

SG3 6 is a sector of the SG3 district: every postcode that starts SG3 6. It has 206 postcodes in use, 2 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 SG3 6 sector, by flood risk

Map of every postcode in the SG3 6 sector, by flood risk Of the 206 postcodes in the SG3 6 sector that ONS places, 206 are not on the Environment Agency's at-risk list. 2 postcodes lie beyond the edge and are listed under the map. Places named: Woolmer Green, Knebworth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A1(M)A602 SG3 6AA: not on the flood risk listSG3 6AB: not on the flood risk listSG3 6AD: not on the flood risk listSG3 6AE: not on the flood risk listSG3 6AF: not on the flood risk listSG3 6AG: not on the flood risk listSG3 6AH: not on the flood risk listSG3 6AJ: not on the flood risk listSG3 6AL: not on the flood risk listSG3 6AN: not on the flood risk listSG3 6AP: not on the flood risk listSG3 6AQ: not on the flood risk listSG3 6AR: not on the flood risk listSG3 6AS: not on the flood risk listSG3 6AT: not on the flood risk listSG3 6AU: not on the flood risk listSG3 6AW: not on the flood risk listSG3 6AX: not on the flood risk listSG3 6AY: not on the flood risk listSG3 6AZ: not on the flood risk listSG3 6BA: not on the flood risk listSG3 6BB: not on the flood risk listSG3 6BD: not on the flood risk listSG3 6BE: not on the flood risk listSG3 6BG: not on the flood risk listSG3 6BH: not on the flood risk listSG3 6BJ: not on the flood risk listSG3 6BL: not on the flood risk listSG3 6BN: not on the flood risk listSG3 6BP: not on the flood risk listSG3 6BQ: not on the flood risk listSG3 6BS: not on the flood risk listSG3 6BT: not on the flood risk listSG3 6BU: not on the flood risk listSG3 6BW: not on the flood risk listSG3 6BX: not on the flood risk listSG3 6BY: not on the flood risk listSG3 6DA: not on the flood risk listSG3 6DB: not on the flood risk listSG3 6DD: not on the flood risk listSG3 6DE: not on the flood risk listSG3 6DF: not on the flood risk listSG3 6DG: not on the flood risk listSG3 6DH: not on the flood risk listSG3 6DJ: not on the flood risk listSG3 6DN: not on the flood risk listSG3 6DP: not on the flood risk listSG3 6DQ: not on the flood risk listSG3 6DR: not on the flood risk listSG3 6DS: not on the flood risk listSG3 6DT: not on the flood risk listSG3 6DU: not on the flood risk listSG3 6DX: not on the flood risk listSG3 6DY: not on the flood risk listSG3 6DZ: not on the flood risk listSG3 6EA: not on the flood risk listSG3 6EB: not on the flood risk listSG3 6ED: not on the flood risk listSG3 6EE: not on the flood risk listSG3 6EH: not on the flood risk listSG3 6EL: not on the flood risk listSG3 6EN: not on the flood risk listSG3 6EP: not on the flood risk listSG3 6EQ: not on the flood risk listSG3 6ER: not on the flood risk listSG3 6EU: not on the flood risk listSG3 6EW: not on the flood risk listSG3 6EX: not on the flood risk listSG3 6EY: not on the flood risk listSG3 6FA: not on the flood risk listSG3 6FB: not on the flood risk listSG3 6FD: not on the flood risk listSG3 6FE: not on the flood risk listSG3 6FF: not on the flood risk listSG3 6FG: not on the flood risk listSG3 6FH: not on the flood risk listSG3 6FN: not on the flood risk listSG3 6FP: not on the flood risk listSG3 6FS: not on the flood risk listSG3 6GL: not on the flood risk listSG3 6HB: not on the flood risk listSG3 6HE: not on the flood risk listSG3 6HF: not on the flood risk listSG3 6HG: not on the flood risk listSG3 6HH: not on the flood risk listSG3 6HJ: not on the flood risk listSG3 6HL: not on the flood risk listSG3 6HP: not on the flood risk listSG3 6HS: not on the flood risk listSG3 6HW: not on the flood risk listSG3 6HY: not on the flood risk listSG3 6JD: not on the flood risk listSG3 6JE: not on the flood risk listSG3 6JF: not on the flood risk listSG3 6JG: not on the flood risk listSG3 6JJ: not on the flood risk listSG3 6JL: not on the flood risk listSG3 6JN: not on the flood risk listSG3 6JP: not on the flood risk listSG3 6JS: not on the flood risk listSG3 6JU: not on the flood risk listSG3 6JW: not on the flood risk listSG3 6JX: not on the flood risk listSG3 6JY: not on the flood risk listSG3 6JZ: not on the flood risk listSG3 6LA: not on the flood risk listSG3 6LB: not on the flood risk listSG3 6LD: not on the flood risk listSG3 6LE: not on the flood risk listSG3 6LG: not on the flood risk listSG3 6LJ: not on the flood risk listSG3 6LL: not on the flood risk listSG3 6LN: not on the flood risk listSG3 6LP: not on the flood risk listSG3 6LR: not on the flood risk listSG3 6LS: not on the flood risk listSG3 6LT: not on the flood risk listSG3 6LU: not on the flood risk listSG3 6LW: not on the flood risk listSG3 6LX: not on the flood risk listSG3 6LZ: not on the flood risk listSG3 6NA: not on the flood risk listSG3 6NB: not on the flood risk listSG3 6ND: not on the flood risk listSG3 6NL: not on the flood risk listSG3 6NN: not on the flood risk listSG3 6NP: not on the flood risk listSG3 6NS: not on the flood risk listSG3 6NU: not on the flood risk listSG3 6NX: not on the flood risk listSG3 6PB: not on the flood risk listSG3 6PD: not on the flood risk listSG3 6PE: not on the flood risk listSG3 6PF: not on the flood risk listSG3 6PG: not on the flood risk listSG3 6PH: not on the flood risk listSG3 6PL: not on the flood risk listSG3 6PP: not on the flood risk listSG3 6PR: not on the flood risk listSG3 6PS: not on the flood risk listSG3 6PT: not on the flood risk listSG3 6PU: not on the flood risk listSG3 6PW: not on the flood risk listSG3 6PY: not on the flood risk listSG3 6QA: not on the flood risk listSG3 6QB: not on the flood risk listSG3 6QD: not on the flood risk listSG3 6QE: not on the flood risk listSG3 6QF: not on the flood risk listSG3 6QG: not on the flood risk listSG3 6QH: not on the flood risk listSG3 6QJ: not on the flood risk listSG3 6QL: not on the flood risk listSG3 6QN: not on the flood risk listSG3 6QT: not on the flood risk listSG3 6QX: not on the flood risk listSG3 6QZ: not on the flood risk listSG3 6RA: not on the flood risk listSG3 6RB: not on the flood risk listSG3 6RD: not on the flood risk listSG3 6RE: not on the flood risk listSG3 6RF: not on the flood risk listSG3 6RG: not on the flood risk listSG3 6RH: not on the flood risk listSG3 6RJ: not on the flood risk listSG3 6RL: not on the flood risk listSG3 6RN: not on the flood risk listSG3 6RP: not on the flood risk listSG3 6RR: not on the flood risk listSG3 6RS: not on the flood risk listSG3 6RU: not on the flood risk listSG3 6RX: not on the flood risk listSG3 6RZ: not on the flood risk listSG3 6SA: not on the flood risk listSG3 6SB: not on the flood risk listSG3 6SE: not on the flood risk listSG3 6SG: not on the flood risk listSG3 6SL: not on the flood risk listSG3 6SP: not on the flood risk listSG3 6SR: not on the flood risk listSG3 6SS: not on the flood risk listSG3 6ST: not on the flood risk listSG3 6SU: not on the flood risk listSG3 6SX: not on the flood risk listSG3 6SZ: not on the flood risk listSG3 6TA: not on the flood risk listSG3 6TB: not on the flood risk listSG3 6TD: not on the flood risk listSG3 6TE: not on the flood risk listSG3 6TF: not on the flood risk listSG3 6TG: not on the flood risk listSG3 6TL: not on the flood risk listSG3 6TN: not on the flood risk listSG3 6TP: not on the flood risk listSG3 6TQ: not on the flood risk list Woolmer GreenKnebworth Map of every postcode in the SG3 6 sector, by flood risk Of the 206 postcodes in the SG3 6 sector that ONS places, 206 are not on the Environment Agency's at-risk list. 2 postcodes lie beyond the edge and are listed under the map. Places named: Woolmer Green, Knebworth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A1(M) Woolmer GreenKnebworth
  • 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: 206

Of the 206 postcodes in the SG3 6 sector that ONS places, 206 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

2 further out, not drawn

These postcodes lie well apart from the rest, so the map is drawn without them to show the rest closer; they are in every count.

SG3 6FRSG3 6PX

What do homes sell for in SG3 6?

Homes in SG3 6 sold for a typical £452,000 in the 12 months to August 2026, across 95 sales, down 6.8% on the 12 months before, HM Land Registry's figures show.

£452,000 typical price, the 12 months to August 2026
£485,000 12 months to August 2025
▼ down 6.8% on the 12 months before
  • Detached £750,000 19 sales
  • Semi-detached £507,500 24 sales
  • Terraced £400,000 30 sales
  • Flat or maisonette £263,500 22 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 SG3 6. 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 SG3 6

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.

SG3 6AASG3 6ABSG3 6ADSG3 6AESG3 6AFSG3 6AGSG3 6AHSG3 6AJSG3 6ALSG3 6ANSG3 6APSG3 6AQSG3 6ARSG3 6ASSG3 6ATSG3 6AUSG3 6AWSG3 6AXSG3 6AYSG3 6AZSG3 6BASG3 6BBSG3 6BDSG3 6BESG3 6BGSG3 6BHSG3 6BJSG3 6BLSG3 6BNSG3 6BPSG3 6BQSG3 6BSSG3 6BTSG3 6BUSG3 6BWSG3 6BXSG3 6BYSG3 6BZSG3 6DASG3 6DBSG3 6DDSG3 6DESG3 6DFSG3 6DGSG3 6DHSG3 6DJSG3 6DNSG3 6DPSG3 6DQSG3 6DRSG3 6DSSG3 6DTSG3 6DUSG3 6DXSG3 6DYSG3 6DZSG3 6EASG3 6EBSG3 6EDSG3 6EESG3 6EHSG3 6ELSG3 6ENSG3 6EPSG3 6EQSG3 6ERSG3 6EUSG3 6EWSG3 6EXSG3 6EYSG3 6FASG3 6FBSG3 6FDSG3 6FESG3 6FFSG3 6FGSG3 6FHSG3 6FJSG3 6FLSG3 6FNSG3 6FPSG3 6FQSG3 6FRSG3 6FSSG3 6GLSG3 6HBSG3 6HESG3 6HFSG3 6HGSG3 6HHSG3 6HJSG3 6HLSG3 6HPSG3 6HSSG3 6HWSG3 6HYSG3 6JDSG3 6JESG3 6JFSG3 6JGSG3 6JHSG3 6JJSG3 6JLSG3 6JNSG3 6JPSG3 6JSSG3 6JUSG3 6JWSG3 6JXSG3 6JYSG3 6JZSG3 6LASG3 6LBSG3 6LDSG3 6LESG3 6LGSG3 6LJSG3 6LLSG3 6LNSG3 6LPSG3 6LRSG3 6LSSG3 6LTSG3 6LUSG3 6LWSG3 6LXSG3 6LZSG3 6NASG3 6NBSG3 6NDSG3 6NLSG3 6NNSG3 6NPSG3 6NSSG3 6NUSG3 6NXSG3 6PBSG3 6PDSG3 6PESG3 6PFSG3 6PGSG3 6PHSG3 6PLSG3 6PPSG3 6PRSG3 6PSSG3 6PTSG3 6PUSG3 6PWSG3 6PXSG3 6PYSG3 6QASG3 6QBSG3 6QDSG3 6QESG3 6QFSG3 6QGSG3 6QHSG3 6QJSG3 6QLSG3 6QNSG3 6QTSG3 6QXSG3 6QZSG3 6RASG3 6RBSG3 6RDSG3 6RESG3 6RFSG3 6RGSG3 6RHSG3 6RJSG3 6RLSG3 6RNSG3 6RPSG3 6RRSG3 6RSSG3 6RUSG3 6RXSG3 6RZSG3 6SASG3 6SBSG3 6SESG3 6SGSG3 6SLSG3 6SPSG3 6SRSG3 6SSSG3 6STSG3 6SUSG3 6SXSG3 6SZSG3 6TASG3 6TBSG3 6TDSG3 6TESG3 6TFSG3 6TGSG3 6TLSG3 6TNSG3 6TPSG3 6TQSG3 6UHSG3 6UZSG3 6XASG3 6YY

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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