SG1 3 postcode sector in the SG1 district

SG1 3 is a sector of the SG1 district: every postcode that starts SG1 3. It has 218 postcodes in use, 5 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 3 sector, by flood risk

Map of every postcode in the SG1 3 sector, by flood risk Of the 218 postcodes in the SG1 3 sector that ONS places, 218 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. A1072A1155A602 SG1 3AB: not on the flood risk listSG1 3AD: not on the flood risk listSG1 3AE: not on the flood risk listSG1 3AF: not on the flood risk listSG1 3AG: not on the flood risk listSG1 3AH: not on the flood risk listSG1 3AL: not on the flood risk listSG1 3AN: not on the flood risk listSG1 3AP: not on the flood risk listSG1 3AQ: not on the flood risk listSG1 3AT: not on the flood risk listSG1 3AU: not on the flood risk listSG1 3AW: not on the flood risk listSG1 3AZ: not on the flood risk listSG1 3BB: not on the flood risk listSG1 3BE: not on the flood risk listSG1 3BF: not on the flood risk listSG1 3BH: not on the flood risk listSG1 3BJ: not on the flood risk listSG1 3BL: not on the flood risk listSG1 3BN: not on the flood risk listSG1 3BP: not on the flood risk listSG1 3BQ: not on the flood risk listSG1 3BS: not on the flood risk listSG1 3BT: not on the flood risk listSG1 3BU: not on the flood risk listSG1 3BW: not on the flood risk listSG1 3BX: not on the flood risk listSG1 3BY: not on the flood risk listSG1 3BZ: not on the flood risk listSG1 3DB: not on the flood risk listSG1 3DF: not on the flood risk listSG1 3DG: not on the flood risk listSG1 3DJ: not on the flood risk listSG1 3DL: not on the flood risk listSG1 3DQ: not on the flood risk listSG1 3DS: not on the flood risk listSG1 3DT: not on the flood risk listSG1 3DW: not on the flood risk listSG1 3DX: not on the flood risk listSG1 3DZ: not on the flood risk listSG1 3EA: not on the flood risk listSG1 3EB: not on the flood risk listSG1 3EE: not on the flood risk listSG1 3EF: not on the flood risk listSG1 3EJ: not on the flood risk listSG1 3EN: not on the flood risk listSG1 3ER: not on the flood risk listSG1 3ES: not on the flood risk listSG1 3ET: not on the flood risk listSG1 3EU: not on the flood risk listSG1 3EW: not on the flood risk listSG1 3EX: not on the flood risk listSG1 3EY: not on the flood risk listSG1 3EZ: not on the flood risk listSG1 3FA: not on the flood risk listSG1 3FB: not on the flood risk listSG1 3FD: not on the flood risk listSG1 3FG: not on the flood risk listSG1 3FH: not on the flood risk listSG1 3GA: not on the flood risk listSG1 3HA: not on the flood risk listSG1 3HD: not on the flood risk listSG1 3HE: not on the flood risk listSG1 3HF: not on the flood risk listSG1 3HH: not on the flood risk listSG1 3HJ: not on the flood risk listSG1 3HP: not on the flood risk listSG1 3HQ: not on the flood risk listSG1 3HR: not on the flood risk listSG1 3HS: not on the flood risk listSG1 3HT: not on the flood risk listSG1 3HU: not on the flood risk listSG1 3HW: not on the flood risk listSG1 3JA: not on the flood risk listSG1 3JB: not on the flood risk listSG1 3JD: not on the flood risk listSG1 3JE: not on the flood risk listSG1 3JF: not on the flood risk listSG1 3JG: not on the flood risk listSG1 3JH: not on the flood risk listSG1 3JJ: not on the flood risk listSG1 3JL: not on the flood risk listSG1 3JN: not on the flood risk listSG1 3JP: not on the flood risk listSG1 3JQ: not on the flood risk listSG1 3JR: not on the flood risk listSG1 3JS: not on the flood risk listSG1 3JT: not on the flood risk listSG1 3JU: not on the flood risk listSG1 3JX: not on the flood risk listSG1 3JY: not on the flood risk listSG1 3JZ: not on the flood risk listSG1 3LA: not on the flood risk listSG1 3LB: not on the flood risk listSG1 3LE: not on the flood risk listSG1 3LF: not on the flood risk listSG1 3LJ: not on the flood risk listSG1 3LL: not on the flood risk listSG1 3LP: not on the flood risk listSG1 3LQ: not on the flood risk listSG1 3LR: not on the flood risk listSG1 3LS: not on the flood risk listSG1 3LT: not on the flood risk listSG1 3LU: not on the flood risk listSG1 3LX: not on the flood risk listSG1 3LY: not on the flood risk listSG1 3LZ: not on the flood risk listSG1 3NA: not on the flood risk listSG1 3NB: not on the flood risk listSG1 3ND: not on the flood risk listSG1 3NE: not on the flood risk listSG1 3NG: not on the flood risk listSG1 3NH: not on the flood risk listSG1 3NJ: not on the flood risk listSG1 3NL: not on the flood risk listSG1 3NQ: not on the flood risk listSG1 3NT: not on the flood risk listSG1 3NU: not on the flood risk listSG1 3NX: not on the flood risk listSG1 3NY: not on the flood risk listSG1 3NZ: not on the flood risk listSG1 3PA: not on the flood risk listSG1 3PB: not on the flood risk listSG1 3PE: not on the flood risk listSG1 3PF: not on the flood risk listSG1 3PG: not on the flood risk listSG1 3PH: not on the flood risk listSG1 3PJ: not on the flood risk listSG1 3PL: not on the flood risk listSG1 3PN: not on the flood risk listSG1 3PP: not on the flood risk listSG1 3PR: not on the flood risk listSG1 3PS: not on the flood risk listSG1 3PT: not on the flood risk listSG1 3PU: not on the flood risk listSG1 3PW: not on the flood risk listSG1 3PX: not on the flood risk listSG1 3PY: not on the flood risk listSG1 3PZ: not on the flood risk listSG1 3QA: not on the flood risk listSG1 3QD: not on the flood risk listSG1 3QE: not on the flood risk listSG1 3QF: not on the flood risk listSG1 3QH: not on the flood risk listSG1 3QP: not on the flood risk listSG1 3QR: not on the flood risk listSG1 3QS: not on the flood risk listSG1 3QU: not on the flood risk listSG1 3QW: not on the flood risk listSG1 3QX: not on the flood risk listSG1 3QY: not on the flood risk listSG1 3QZ: not on the flood risk listSG1 3RA: not on the flood risk listSG1 3RB: not on the flood risk listSG1 3RD: not on the flood risk listSG1 3RE: not on the flood risk listSG1 3RH: not on the flood risk listSG1 3RJ: not on the flood risk listSG1 3RL: not on the flood risk listSG1 3RN: not on the flood risk listSG1 3RP: not on the flood risk listSG1 3RQ: not on the flood risk listSG1 3RR: not on the flood risk listSG1 3RS: not on the flood risk listSG1 3RT: not on the flood risk listSG1 3RU: not on the flood risk listSG1 3RW: not on the flood risk listSG1 3RY: not on the flood risk listSG1 3RZ: not on the flood risk listSG1 3SA: not on the flood risk listSG1 3SB: not on the flood risk listSG1 3SE: not on the flood risk listSG1 3SF: not on the flood risk listSG1 3SG: not on the flood risk listSG1 3SH: not on the flood risk listSG1 3SJ: not on the flood risk listSG1 3SL: not on the flood risk listSG1 3SP: not on the flood risk listSG1 3SQ: not on the flood risk listSG1 3SS: not on the flood risk listSG1 3SZ: not on the flood risk listSG1 3TA: not on the flood risk listSG1 3TB: not on the flood risk listSG1 3TD: not on the flood risk listSG1 3TE: not on the flood risk listSG1 3TG: not on the flood risk listSG1 3TL: not on the flood risk listSG1 3TN: not on the flood risk listSG1 3TP: not on the flood risk listSG1 3TR: not on the flood risk listSG1 3TS: not on the flood risk listSG1 3TT: not on the flood risk listSG1 3TU: not on the flood risk listSG1 3TW: not on the flood risk listSG1 3TX: not on the flood risk listSG1 3UF: not on the flood risk listSG1 3UG: not on the flood risk listSG1 3UH: not on the flood risk listSG1 3UJ: not on the flood risk listSG1 3UN: not on the flood risk listSG1 3UW: not on the flood risk listSG1 3WA: not on the flood risk listSG1 3WB: not on the flood risk listSG1 3XA: not on the flood risk listSG1 3XE: not on the flood risk listSG1 3XS: not on the flood risk listSG1 3XT: not on the flood risk listSG1 3XU: not on the flood risk listSG1 3XW: not on the flood risk listSG1 3XX: not on the flood risk listSG1 3XY: not on the flood risk listSG1 3XZ: not on the flood risk listSG1 3YJ: not on the flood risk listSG1 3YL: not on the flood risk listSG1 3YN: not on the flood risk listSG1 3YW: not on the flood risk list Stevenage Map of every postcode in the SG1 3 sector, by flood risk Of the 218 postcodes in the SG1 3 sector that ONS places, 218 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. A1072 Stevenage
  • 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: 218

Of the 218 postcodes in the SG1 3 sector that ONS places, 218 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 3?

Homes in SG1 3 sold for a typical £368,000 in the 12 months to August 2026, across 77 sales, down 0.9% on the 12 months before, HM Land Registry's figures show.

£368,000 typical price, the 12 months to August 2026
£371,250 12 months to August 2025
▼ down 0.9% on the 12 months before
  • Detached £610,000 13 sales
  • Semi-detached £451,250 22 sales
  • Terraced £355,500 18 sales
  • Flat or maisonette £229,000 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 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 SG1 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.

SG1 3ABSG1 3ADSG1 3AESG1 3AFSG1 3AGSG1 3AHSG1 3ALSG1 3ANSG1 3APSG1 3AQSG1 3ATSG1 3AUSG1 3AWSG1 3AZSG1 3BBSG1 3BESG1 3BFSG1 3BGSG1 3BHSG1 3BJSG1 3BLSG1 3BNSG1 3BPSG1 3BQSG1 3BSSG1 3BTSG1 3BUSG1 3BWSG1 3BXSG1 3BYSG1 3BZSG1 3DBSG1 3DFSG1 3DGSG1 3DJSG1 3DLSG1 3DQSG1 3DSSG1 3DTSG1 3DWSG1 3DXSG1 3DZSG1 3EASG1 3EBSG1 3EESG1 3EFSG1 3EJSG1 3ENSG1 3ERSG1 3ESSG1 3ETSG1 3EUSG1 3EWSG1 3EXSG1 3EYSG1 3EZSG1 3FASG1 3FBSG1 3FDSG1 3FGSG1 3FHSG1 3GASG1 3HASG1 3HDSG1 3HESG1 3HFSG1 3HHSG1 3HJSG1 3HPSG1 3HQSG1 3HRSG1 3HSSG1 3HTSG1 3HUSG1 3HWSG1 3JASG1 3JBSG1 3JDSG1 3JESG1 3JFSG1 3JGSG1 3JHSG1 3JJSG1 3JLSG1 3JNSG1 3JPSG1 3JQSG1 3JRSG1 3JSSG1 3JTSG1 3JUSG1 3JXSG1 3JYSG1 3JZSG1 3LASG1 3LBSG1 3LESG1 3LFSG1 3LJSG1 3LLSG1 3LPSG1 3LQSG1 3LRSG1 3LSSG1 3LTSG1 3LUSG1 3LXSG1 3LYSG1 3LZSG1 3NASG1 3NBSG1 3NDSG1 3NESG1 3NGSG1 3NHSG1 3NJSG1 3NLSG1 3NQSG1 3NTSG1 3NUSG1 3NXSG1 3NYSG1 3NZSG1 3PASG1 3PBSG1 3PESG1 3PFSG1 3PGSG1 3PHSG1 3PJSG1 3PLSG1 3PNSG1 3PPSG1 3PRSG1 3PSSG1 3PTSG1 3PUSG1 3PWSG1 3PXSG1 3PYSG1 3PZSG1 3QASG1 3QDSG1 3QESG1 3QFSG1 3QHSG1 3QPSG1 3QRSG1 3QSSG1 3QUSG1 3QWSG1 3QXSG1 3QYSG1 3QZSG1 3RASG1 3RBSG1 3RDSG1 3RESG1 3RHSG1 3RJSG1 3RLSG1 3RNSG1 3RPSG1 3RQSG1 3RRSG1 3RSSG1 3RTSG1 3RUSG1 3RWSG1 3RYSG1 3RZSG1 3SASG1 3SBSG1 3SESG1 3SFSG1 3SGSG1 3SHSG1 3SJSG1 3SLSG1 3SPSG1 3SQSG1 3SSSG1 3SZSG1 3TASG1 3TBSG1 3TDSG1 3TESG1 3TGSG1 3TLSG1 3TNSG1 3TPSG1 3TRSG1 3TSSG1 3TTSG1 3TUSG1 3TWSG1 3TXSG1 3UFSG1 3UGSG1 3UHSG1 3UJSG1 3UNSG1 3UWSG1 3WASG1 3WBSG1 3XASG1 3XESG1 3XSSG1 3XTSG1 3XUSG1 3XWSG1 3XXSG1 3XYSG1 3XZSG1 3YJSG1 3YLSG1 3YNSG1 3YW

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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