SG1 4 postcode sector in the SG1 district

SG1 4 is a sector of the SG1 district: every postcode that starts SG1 4. It has 294 postcodes in use, 7 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 SG1 4 sector, by flood risk

Map of every postcode in the SG1 4 sector, by flood risk Of the 294 postcodes in the SG1 4 sector that ONS places, 2 are at low risk at worst and 292 are not on the Environment Agency's at-risk list. Places named: Stevenage. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A1072A1(M)A1155 SG1 4AA: not on the flood risk listSG1 4AB: not on the flood risk listSG1 4AD: not on the flood risk listSG1 4AE: not on the flood risk listSG1 4AF: not on the flood risk listSG1 4AH: not on the flood risk listSG1 4AJ: not on the flood risk listSG1 4AL: not on the flood risk listSG1 4AN: not on the flood risk listSG1 4AP: not on the flood risk listSG1 4AQ: not on the flood risk listSG1 4AR: not on the flood risk listSG1 4AS: not on the flood risk listSG1 4AT: not on the flood risk listSG1 4AU: not on the flood risk listSG1 4AW: not on the flood risk listSG1 4AX: not on the flood risk listSG1 4AY: not on the flood risk listSG1 4AZ: not on the flood risk listSG1 4BA: not on the flood risk listSG1 4BB: not on the flood risk listSG1 4BD: not on the flood risk listSG1 4BE: not on the flood risk listSG1 4BG: not on the flood risk listSG1 4BH: not on the flood risk listSG1 4BJ: not on the flood risk listSG1 4BL: not on the flood risk listSG1 4BP: not on the flood risk listSG1 4BQ: not on the flood risk listSG1 4BS: not on the flood risk listSG1 4BT: not on the flood risk listSG1 4BU: not on the flood risk listSG1 4BW: not on the flood risk listSG1 4BX: not on the flood risk listSG1 4BY: not on the flood risk listSG1 4BZ: not on the flood risk listSG1 4DA: not on the flood risk listSG1 4DB: not on the flood risk listSG1 4DD: not on the flood risk listSG1 4DE: not on the flood risk listSG1 4DG: not on the flood risk listSG1 4DH: not on the flood risk listSG1 4DJ: not on the flood risk listSG1 4DL: not on the flood risk listSG1 4DN: not on the flood risk listSG1 4DP: not on the flood risk listSG1 4DQ: not on the flood risk listSG1 4DR: not on the flood risk listSG1 4DS: not on the flood risk listSG1 4DT: not on the flood risk listSG1 4DU: not on the flood risk listSG1 4DW: not on the flood risk listSG1 4DX: not on the flood risk listSG1 4DY: not on the flood risk listSG1 4DZ: not on the flood risk listSG1 4EA: not on the flood risk listSG1 4EB: not on the flood risk listSG1 4ED: not on the flood risk listSG1 4EE: not on the flood risk listSG1 4EF: not on the flood risk listSG1 4EG: not on the flood risk listSG1 4EH: not on the flood risk listSG1 4EJ: not on the flood risk listSG1 4EL: not on the flood risk listSG1 4EN: not on the flood risk listSG1 4EP: not on the flood risk listSG1 4EQ: not on the flood risk listSG1 4ER: not on the flood risk listSG1 4ET: not on the flood risk listSG1 4EU: not on the flood risk listSG1 4EW: not on the flood risk listSG1 4EX: not on the flood risk listSG1 4EY: not on the flood risk listSG1 4EZ: not on the flood risk listSG1 4FE: not on the flood risk listSG1 4FF: not on the flood risk listSG1 4FG: not on the flood risk listSG1 4FH: not on the flood risk listSG1 4FJ: not on the flood risk listSG1 4FL: not on the flood risk listSG1 4FN: not on the flood risk listSG1 4FP: not on the flood risk listSG1 4FR: not on the flood risk listSG1 4FS: not on the flood risk listSG1 4FT: not on the flood risk listSG1 4FU: not on the flood risk listSG1 4FW: not on the flood risk listSG1 4FX: not on the flood risk listSG1 4FY: not on the flood risk listSG1 4FZ: not on the flood risk listSG1 4GA: not on the flood risk listSG1 4GB: not on the flood risk listSG1 4GD: not on the flood risk listSG1 4GE: not on the flood risk listSG1 4GF: not on the flood risk listSG1 4GG: not on the flood risk listSG1 4GH: not on the flood risk listSG1 4GJ: not on the flood risk listSG1 4GL: not on the flood risk listSG1 4GN: not on the flood risk listSG1 4GP: not on the flood risk listSG1 4GQ: not on the flood risk listSG1 4GR: not on the flood risk listSG1 4GS: not on the flood risk listSG1 4GT: not on the flood risk listSG1 4GU: not on the flood risk listSG1 4GW: not on the flood risk listSG1 4GY: not on the flood risk listSG1 4GZ: not on the flood risk listSG1 4HA: not on the flood risk listSG1 4HB: not on the flood risk listSG1 4HD: not on the flood risk listSG1 4HE: not on the flood risk listSG1 4HF: not on the flood risk listSG1 4HG: not on the flood risk listSG1 4HH: not on the flood risk listSG1 4HJ: not on the flood risk listSG1 4HL: not on the flood risk listSG1 4HN: not on the flood risk listSG1 4HP: not on the flood risk listSG1 4HQ: not on the flood risk listSG1 4HS: not on the flood risk listSG1 4HT: not on the flood risk listSG1 4HU: not on the flood risk listSG1 4HW: not on the flood risk listSG1 4HX: not on the flood risk listSG1 4HY: not on the flood risk listSG1 4HZ: not on the flood risk listSG1 4JA: not on the flood risk listSG1 4JB: not on the flood risk listSG1 4JD: not on the flood risk listSG1 4JE: not on the flood risk listSG1 4JF: not on the flood risk listSG1 4JG: not on the flood risk listSG1 4JH: not on the flood risk listSG1 4JJ: not on the flood risk listSG1 4JL: not on the flood risk listSG1 4JN: not on the flood risk listSG1 4JP: not on the flood risk listSG1 4JQ: not on the flood risk listSG1 4JU: not on the flood risk listSG1 4JW: not on the flood risk listSG1 4JX: not on the flood risk listSG1 4JY: not on the flood risk listSG1 4JZ: not on the flood risk listSG1 4LA: not on the flood risk listSG1 4LB: not on the flood risk listSG1 4LD: not on the flood risk listSG1 4LE: not on the flood risk listSG1 4LF: not on the flood risk listSG1 4LG: not on the flood risk listSG1 4LH: not on the flood risk listSG1 4LJ: not on the flood risk listSG1 4LL: not on the flood risk listSG1 4LN: not on the flood risk listSG1 4LP: not on the flood risk listSG1 4LQ: not on the flood risk listSG1 4LR: not on the flood risk listSG1 4LS: not on the flood risk listSG1 4LT: not on the flood risk listSG1 4LU: not on the flood risk listSG1 4LW: not on the flood risk listSG1 4LX: not on the flood risk listSG1 4LZ: not on the flood risk listSG1 4NA: not on the flood risk listSG1 4NB: not on the flood risk listSG1 4ND: not on the flood risk listSG1 4NE: not on the flood risk listSG1 4NF: not on the flood risk listSG1 4NG: not on the flood risk listSG1 4NH: not on the flood risk listSG1 4NJ: not on the flood risk listSG1 4NL: not on the flood risk listSG1 4NN: not on the flood risk listSG1 4NP: not on the flood risk listSG1 4NQ: not on the flood risk listSG1 4NR: not on the flood risk listSG1 4NS: not on the flood risk listSG1 4NT: not on the flood risk listSG1 4NU: not on the flood risk listSG1 4NW: not on the flood risk listSG1 4NX: not on the flood risk listSG1 4NY: not on the flood risk listSG1 4NZ: not on the flood risk listSG1 4PA: not on the flood risk listSG1 4PB: not on the flood risk listSG1 4PD: not on the flood risk listSG1 4PE: not on the flood risk listSG1 4PF: not on the flood risk listSG1 4PG: not on the flood risk listSG1 4PH: not on the flood risk listSG1 4PJ: not on the flood risk listSG1 4PL: not on the flood risk listSG1 4PN: not on the flood risk listSG1 4PP: not on the flood risk listSG1 4PQ: not on the flood risk listSG1 4PR: not on the flood risk listSG1 4PT: not on the flood risk listSG1 4PW: not on the flood risk listSG1 4QA: not on the flood risk listSG1 4QB: not on the flood risk listSG1 4QE: not on the flood risk listSG1 4QF: not on the flood risk listSG1 4QG: not on the flood risk listSG1 4QH: not on the flood risk listSG1 4QJ: not on the flood risk listSG1 4QL: not on the flood risk listSG1 4QR: not on the flood risk listSG1 4QS: not on the flood risk listSG1 4QT: not on the flood risk listSG1 4QX: not on the flood risk listSG1 4QZ: not on the flood risk listSG1 4RA: not on the flood risk listSG1 4RB: not on the flood risk listSG1 4RD: not on the flood risk listSG1 4RE: not on the flood risk listSG1 4RF: not on the flood risk listSG1 4RG: not on the flood risk listSG1 4RH: not on the flood risk listSG1 4RJ: not on the flood risk listSG1 4RL: not on the flood risk listSG1 4RN: not on the flood risk listSG1 4RP: not on the flood risk listSG1 4RQ: not on the flood risk listSG1 4RR: not on the flood risk listSG1 4RS: not on the flood risk listSG1 4RU: not on the flood risk listSG1 4RW: not on the flood risk listSG1 4RX: not on the flood risk listSG1 4RY: not on the flood risk listSG1 4SA: not on the flood risk listSG1 4SB: not on the flood risk listSG1 4SD: not on the flood risk listSG1 4SF: not on the flood risk listSG1 4SP: not on the flood risk listSG1 4SU: not on the flood risk listSG1 4SW: not on the flood risk listSG1 4SX: not on the flood risk listSG1 4SZ: not on the flood risk listSG1 4TA: not on the flood risk listSG1 4TB: not on the flood risk listSG1 4TD: not on the flood risk listSG1 4TE: not on the flood risk listSG1 4TF: not on the flood risk listSG1 4TG: not on the flood risk listSG1 4TJ: not on the flood risk listSG1 4TL: not on the flood risk listSG1 4TN: not on the flood risk listSG1 4TQ: not on the flood risk listSG1 4TT: not on the flood risk listSG1 4TU: not on the flood risk listSG1 4TZ: not on the flood risk listSG1 4UA: not on the flood risk listSG1 4UE: not on the flood risk listSG1 4UF: not on the flood risk listSG1 4UG: not on the flood risk listSG1 4UJ: not on the flood risk listSG1 4UN: not on the flood risk listSG1 4UQ: not on the flood risk listSG1 4US: not on the flood risk listSG1 4UW: not on the flood risk listSG1 4UY: not on the flood risk listSG1 4UZ: not on the flood risk listSG1 4WL: not on the flood risk listSG1 4WU: not on the flood risk listSG1 4XB: not on the flood risk listSG1 4XD: not on the flood risk listSG1 4XE: not on the flood risk listSG1 4XF: not on the flood risk listSG1 4XP: not on the flood risk listSG1 4XR: not on the flood risk listSG1 4XS: not on the flood risk listSG1 4XX: not on the flood risk listSG1 4YF: not on the flood risk listSG1 4YJ: not on the flood risk listSG1 4YL: not on the flood risk listSG1 4YP: not on the flood risk listSG1 4YR: not on the flood risk listSG1 4YS: not on the flood risk listSG1 4YT: not on the flood risk listSG1 4YU: not on the flood risk listSG1 4ZE: not on the flood risk listSG1 4FD: low flood risk at worstSG1 4WP: low flood risk at worst Stevenage Map of every postcode in the SG1 4 sector, by flood risk Of the 294 postcodes in the SG1 4 sector that ONS places, 2 are at low risk at worst and 292 are not on the Environment Agency's at-risk list. Places named: Stevenage. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A1(M) Stevenage
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 2
  • At very low risk only: 0
  • Not on the at-risk list: 292

Of the 294 postcodes in the SG1 4 sector that ONS places, 2 are at low risk at worst and 292 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 SG1 4?

Homes in SG1 4 sold for a typical £325,000 in the 12 months to August 2026, across 83 sales, down 11.4% on the 12 months before, HM Land Registry's figures show.

£325,000 typical price, the 12 months to August 2026
£367,000 12 months to August 2025
▼ down 11.4% on the 12 months before
  • Detached £720,000 12 sales
  • Semi-detached £444,000 8 sales
  • Terraced £326,418 39 sales
  • Flat or maisonette £181,250 24 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 SG1 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 SG1 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.

SG1 4AASG1 4ABSG1 4ADSG1 4AESG1 4AFSG1 4AHSG1 4AJSG1 4ALSG1 4ANSG1 4APSG1 4AQSG1 4ARSG1 4ASSG1 4ATSG1 4AUSG1 4AWSG1 4AXSG1 4AYSG1 4AZSG1 4BASG1 4BBSG1 4BDSG1 4BESG1 4BGSG1 4BHSG1 4BJSG1 4BLSG1 4BPSG1 4BQSG1 4BSSG1 4BTSG1 4BUSG1 4BWSG1 4BXSG1 4BYSG1 4BZSG1 4DASG1 4DBSG1 4DDSG1 4DESG1 4DGSG1 4DHSG1 4DJSG1 4DLSG1 4DNSG1 4DPSG1 4DQSG1 4DRSG1 4DSSG1 4DTSG1 4DUSG1 4DWSG1 4DXSG1 4DYSG1 4DZSG1 4EASG1 4EBSG1 4EDSG1 4EESG1 4EFSG1 4EGSG1 4EHSG1 4EJSG1 4ELSG1 4ENSG1 4EPSG1 4EQSG1 4ERSG1 4ESSG1 4ETSG1 4EUSG1 4EWSG1 4EXSG1 4EYSG1 4EZSG1 4FDSG1 4FESG1 4FFSG1 4FGSG1 4FHSG1 4FJSG1 4FLSG1 4FNSG1 4FPSG1 4FQSG1 4FRSG1 4FSSG1 4FTSG1 4FUSG1 4FWSG1 4FXSG1 4FYSG1 4FZSG1 4GASG1 4GBSG1 4GDSG1 4GESG1 4GFSG1 4GGSG1 4GHSG1 4GJSG1 4GLSG1 4GNSG1 4GPSG1 4GQSG1 4GRSG1 4GSSG1 4GTSG1 4GUSG1 4GWSG1 4GXSG1 4GYSG1 4GZSG1 4HASG1 4HBSG1 4HDSG1 4HESG1 4HFSG1 4HGSG1 4HHSG1 4HJSG1 4HLSG1 4HNSG1 4HPSG1 4HQSG1 4HSSG1 4HTSG1 4HUSG1 4HWSG1 4HXSG1 4HYSG1 4HZSG1 4JASG1 4JBSG1 4JDSG1 4JESG1 4JFSG1 4JGSG1 4JHSG1 4JJSG1 4JLSG1 4JNSG1 4JPSG1 4JQSG1 4JRSG1 4JUSG1 4JWSG1 4JXSG1 4JYSG1 4JZSG1 4LASG1 4LBSG1 4LDSG1 4LESG1 4LFSG1 4LGSG1 4LHSG1 4LJSG1 4LLSG1 4LNSG1 4LPSG1 4LQSG1 4LRSG1 4LSSG1 4LTSG1 4LUSG1 4LWSG1 4LXSG1 4LYSG1 4LZSG1 4NASG1 4NBSG1 4NDSG1 4NESG1 4NFSG1 4NGSG1 4NHSG1 4NJSG1 4NLSG1 4NNSG1 4NPSG1 4NQSG1 4NRSG1 4NSSG1 4NTSG1 4NUSG1 4NWSG1 4NXSG1 4NYSG1 4NZSG1 4PASG1 4PBSG1 4PDSG1 4PESG1 4PFSG1 4PGSG1 4PHSG1 4PJSG1 4PLSG1 4PNSG1 4PPSG1 4PQSG1 4PRSG1 4PTSG1 4PWSG1 4QASG1 4QBSG1 4QESG1 4QFSG1 4QGSG1 4QHSG1 4QJSG1 4QLSG1 4QRSG1 4QSSG1 4QTSG1 4QXSG1 4QZSG1 4RASG1 4RBSG1 4RDSG1 4RESG1 4RFSG1 4RGSG1 4RHSG1 4RJSG1 4RLSG1 4RNSG1 4RPSG1 4RQSG1 4RRSG1 4RSSG1 4RTSG1 4RUSG1 4RWSG1 4RXSG1 4RYSG1 4SASG1 4SBSG1 4SDSG1 4SFSG1 4SPSG1 4SUSG1 4SWSG1 4SXSG1 4SZSG1 4TASG1 4TBSG1 4TDSG1 4TESG1 4TFSG1 4TGSG1 4TJSG1 4TLSG1 4TNSG1 4TQSG1 4TTSG1 4TUSG1 4TZSG1 4UASG1 4UESG1 4UFSG1 4UGSG1 4UJSG1 4UNSG1 4UQSG1 4USSG1 4UWSG1 4UYSG1 4UZSG1 4WLSG1 4WPSG1 4WUSG1 4WYSG1 4XBSG1 4XDSG1 4XESG1 4XFSG1 4XPSG1 4XRSG1 4XSSG1 4XXSG1 4YFSG1 4YJSG1 4YLSG1 4YPSG1 4YRSG1 4YSSG1 4YTSG1 4YUSG1 4YWSG1 4YXSG1 4ZASG1 4ZE

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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