SG4 9 postcode sector in the SG4 district

SG4 9 is a sector of the SG4 district: every postcode that starts SG4 9. It has 232 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 SG4 9 sector, by flood risk

Map of every postcode in the SG4 9 sector, by flood risk Of the 232 postcodes in the SG4 9 sector that ONS places, 4 have a home or business at high risk, 5 are at low risk at worst and 223 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Hitchin. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A602 SG4 9AA: not on the flood risk listSG4 9AB: not on the flood risk listSG4 9AD: not on the flood risk listSG4 9AE: not on the flood risk listSG4 9AF: not on the flood risk listSG4 9AG: not on the flood risk listSG4 9AH: not on the flood risk listSG4 9AJ: not on the flood risk listSG4 9AL: not on the flood risk listSG4 9AN: not on the flood risk listSG4 9AP: not on the flood risk listSG4 9AQ: not on the flood risk listSG4 9AR: not on the flood risk listSG4 9AS: not on the flood risk listSG4 9AT: not on the flood risk listSG4 9AU: not on the flood risk listSG4 9AW: not on the flood risk listSG4 9AX: not on the flood risk listSG4 9AY: not on the flood risk listSG4 9AZ: not on the flood risk listSG4 9BA: not on the flood risk listSG4 9BB: not on the flood risk listSG4 9BD: not on the flood risk listSG4 9BG: not on the flood risk listSG4 9BH: not on the flood risk listSG4 9BJ: not on the flood risk listSG4 9BL: not on the flood risk listSG4 9BN: not on the flood risk listSG4 9BP: not on the flood risk listSG4 9BQ: not on the flood risk listSG4 9BS: not on the flood risk listSG4 9BW: not on the flood risk listSG4 9BZ: not on the flood risk listSG4 9DA: not on the flood risk listSG4 9DD: not on the flood risk listSG4 9DE: not on the flood risk listSG4 9DG: not on the flood risk listSG4 9DH: not on the flood risk listSG4 9DJ: not on the flood risk listSG4 9DL: not on the flood risk listSG4 9DN: not on the flood risk listSG4 9DP: not on the flood risk listSG4 9DQ: not on the flood risk listSG4 9DR: not on the flood risk listSG4 9DS: not on the flood risk listSG4 9DT: not on the flood risk listSG4 9DU: not on the flood risk listSG4 9DW: not on the flood risk listSG4 9DX: not on the flood risk listSG4 9DZ: not on the flood risk listSG4 9EA: not on the flood risk listSG4 9EE: not on the flood risk listSG4 9EG: not on the flood risk listSG4 9EH: not on the flood risk listSG4 9EJ: not on the flood risk listSG4 9EL: not on the flood risk listSG4 9EN: not on the flood risk listSG4 9EP: not on the flood risk listSG4 9EQ: not on the flood risk listSG4 9ER: not on the flood risk listSG4 9ES: not on the flood risk listSG4 9ET: not on the flood risk listSG4 9EU: not on the flood risk listSG4 9EW: not on the flood risk listSG4 9EX: not on the flood risk listSG4 9EY: not on the flood risk listSG4 9EZ: not on the flood risk listSG4 9FB: not on the flood risk listSG4 9FE: not on the flood risk listSG4 9FF: not on the flood risk listSG4 9FG: not on the flood risk listSG4 9FH: not on the flood risk listSG4 9FJ: not on the flood risk listSG4 9FL: not on the flood risk listSG4 9FN: not on the flood risk listSG4 9FP: not on the flood risk listSG4 9GD: not on the flood risk listSG4 9HA: not on the flood risk listSG4 9HD: not on the flood risk listSG4 9HF: not on the flood risk listSG4 9HH: not on the flood risk listSG4 9HJ: not on the flood risk listSG4 9HN: not on the flood risk listSG4 9HP: not on the flood risk listSG4 9HR: not on the flood risk listSG4 9HS: not on the flood risk listSG4 9HT: not on the flood risk listSG4 9HU: not on the flood risk listSG4 9HW: not on the flood risk listSG4 9HX: not on the flood risk listSG4 9HY: not on the flood risk listSG4 9HZ: not on the flood risk listSG4 9JA: not on the flood risk listSG4 9JE: not on the flood risk listSG4 9JF: not on the flood risk listSG4 9JG: not on the flood risk listSG4 9JH: not on the flood risk listSG4 9JJ: not on the flood risk listSG4 9JL: not on the flood risk listSG4 9JN: not on the flood risk listSG4 9JP: not on the flood risk listSG4 9JQ: not on the flood risk listSG4 9JR: not on the flood risk listSG4 9JS: not on the flood risk listSG4 9JW: not on the flood risk listSG4 9LA: not on the flood risk listSG4 9LB: not on the flood risk listSG4 9LD: not on the flood risk listSG4 9LE: not on the flood risk listSG4 9LF: not on the flood risk listSG4 9LG: not on the flood risk listSG4 9LH: not on the flood risk listSG4 9LJ: not on the flood risk listSG4 9LL: not on the flood risk listSG4 9LN: not on the flood risk listSG4 9LP: not on the flood risk listSG4 9LQ: not on the flood risk listSG4 9LR: not on the flood risk listSG4 9LS: not on the flood risk listSG4 9LT: not on the flood risk listSG4 9LU: not on the flood risk listSG4 9LW: not on the flood risk listSG4 9LX: not on the flood risk listSG4 9LY: not on the flood risk listSG4 9LZ: not on the flood risk listSG4 9NA: not on the flood risk listSG4 9NB: not on the flood risk listSG4 9NG: not on the flood risk listSG4 9NH: not on the flood risk listSG4 9NJ: not on the flood risk listSG4 9NL: not on the flood risk listSG4 9NN: not on the flood risk listSG4 9NP: not on the flood risk listSG4 9NQ: not on the flood risk listSG4 9NR: not on the flood risk listSG4 9NT: not on the flood risk listSG4 9NW: not on the flood risk listSG4 9NZ: not on the flood risk listSG4 9PA: not on the flood risk listSG4 9PB: not on the flood risk listSG4 9PD: not on the flood risk listSG4 9PG: not on the flood risk listSG4 9PH: not on the flood risk listSG4 9PJ: not on the flood risk listSG4 9PL: not on the flood risk listSG4 9PN: not on the flood risk listSG4 9PP: not on the flood risk listSG4 9PR: not on the flood risk listSG4 9PS: not on the flood risk listSG4 9PT: not on the flood risk listSG4 9PW: not on the flood risk listSG4 9PX: not on the flood risk listSG4 9PY: not on the flood risk listSG4 9PZ: not on the flood risk listSG4 9QA: not on the flood risk listSG4 9QB: not on the flood risk listSG4 9QD: not on the flood risk listSG4 9QE: not on the flood risk listSG4 9QF: not on the flood risk listSG4 9QG: not on the flood risk listSG4 9QH: not on the flood risk listSG4 9QJ: not on the flood risk listSG4 9QN: not on the flood risk listSG4 9QP: not on the flood risk listSG4 9QQ: not on the flood risk listSG4 9QR: not on the flood risk listSG4 9QS: not on the flood risk listSG4 9QW: not on the flood risk listSG4 9QX: not on the flood risk listSG4 9QY: not on the flood risk listSG4 9QZ: not on the flood risk listSG4 9RA: not on the flood risk listSG4 9RB: not on the flood risk listSG4 9RD: not on the flood risk listSG4 9RE: not on the flood risk listSG4 9RG: not on the flood risk listSG4 9RH: not on the flood risk listSG4 9RJ: not on the flood risk listSG4 9RL: not on the flood risk listSG4 9RQ: not on the flood risk listSG4 9RS: not on the flood risk listSG4 9RT: not on the flood risk listSG4 9RU: not on the flood risk listSG4 9RW: not on the flood risk listSG4 9RY: not on the flood risk listSG4 9RZ: not on the flood risk listSG4 9SA: not on the flood risk listSG4 9SB: not on the flood risk listSG4 9SD: not on the flood risk listSG4 9SE: not on the flood risk listSG4 9SG: not on the flood risk listSG4 9SJ: not on the flood risk listSG4 9SL: not on the flood risk listSG4 9SP: not on the flood risk listSG4 9SQ: not on the flood risk listSG4 9SS: not on the flood risk listSG4 9ST: not on the flood risk listSG4 9SU: not on the flood risk listSG4 9SX: not on the flood risk listSG4 9SY: not on the flood risk listSG4 9TA: not on the flood risk listSG4 9TB: not on the flood risk listSG4 9TE: not on the flood risk listSG4 9TH: not on the flood risk listSG4 9TL: not on the flood risk listSG4 9TP: not on the flood risk listSG4 9TS: not on the flood risk listSG4 9TT: not on the flood risk listSG4 9TU: not on the flood risk listSG4 9TW: not on the flood risk listSG4 9TX: not on the flood risk listSG4 9TZ: not on the flood risk listSG4 9UA: not on the flood risk listSG4 9UJ: not on the flood risk listSG4 9UL: not on the flood risk listSG4 9UN: not on the flood risk listSG4 9UW: not on the flood risk listSG4 9YD: not on the flood risk listSG4 9YH: not on the flood risk listSG4 9YJ: not on the flood risk listSG4 9EB: low flood risk at worstSG4 9EF: low flood risk at worstSG4 9JB: low flood risk at worstSG4 9JD: low flood risk at worstSG4 9NS: low flood risk at worstSG4 9NU: high flood riskSG4 9NX: high flood riskSG4 9NY: high flood riskSG4 9QL: high flood risk Hitchin Map of every postcode in the SG4 9 sector, by flood risk Of the 232 postcodes in the SG4 9 sector that ONS places, 4 have a home or business at high risk, 5 are at low risk at worst and 223 are not on the Environment Agency's at-risk list. One postcode lies beyond the edge and is listed under the map. Places named: Hitchin. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Hitchin
  • A home or business at high risk: 4
  • At medium risk at worst: 0
  • At low risk at worst: 5
  • At very low risk only: 0
  • Not on the at-risk list: 223

Of the 232 postcodes in the SG4 9 sector that ONS places, 4 have a home or business at high risk, 5 are at low risk at worst and 223 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.

SG4 9NX11 at high riskSG4 9NU6 at high riskSG4 9NY6 at high riskSG4 9QL1 at high risk

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.

SG4 9WQ

What do homes sell for in SG4 9?

Homes in SG4 9 sold for a typical £490,000 in the 12 months to August 2026, across 142 sales, up 0.5% on the 12 months before, HM Land Registry's figures show.

£490,000 typical price, the 12 months to August 2026
£487,500 12 months to August 2025
▲ up 0.5% on the 12 months before
  • Detached £810,234 25 sales
  • Semi-detached £559,750 46 sales
  • Terraced £450,000 25 sales
  • Flat or maisonette £271,750 46 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 SG4 9. 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 SG4 9

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.

SG4 9AASG4 9ABSG4 9ADSG4 9AESG4 9AFSG4 9AGSG4 9AHSG4 9AJSG4 9ALSG4 9ANSG4 9APSG4 9AQSG4 9ARSG4 9ASSG4 9ATSG4 9AUSG4 9AWSG4 9AXSG4 9AYSG4 9AZSG4 9BASG4 9BBSG4 9BDSG4 9BGSG4 9BHSG4 9BJSG4 9BLSG4 9BNSG4 9BPSG4 9BQSG4 9BSSG4 9BWSG4 9BZSG4 9DASG4 9DDSG4 9DESG4 9DGSG4 9DHSG4 9DJSG4 9DLSG4 9DNSG4 9DPSG4 9DQSG4 9DRSG4 9DSSG4 9DTSG4 9DUSG4 9DWSG4 9DXSG4 9DZSG4 9EASG4 9EBSG4 9EESG4 9EFSG4 9EGSG4 9EHSG4 9EJSG4 9ELSG4 9ENSG4 9EPSG4 9EQSG4 9ERSG4 9ESSG4 9ETSG4 9EUSG4 9EWSG4 9EXSG4 9EYSG4 9EZSG4 9FBSG4 9FESG4 9FFSG4 9FGSG4 9FHSG4 9FJSG4 9FLSG4 9FNSG4 9FPSG4 9GDSG4 9HASG4 9HDSG4 9HFSG4 9HHSG4 9HJSG4 9HNSG4 9HPSG4 9HRSG4 9HSSG4 9HTSG4 9HUSG4 9HWSG4 9HXSG4 9HYSG4 9HZSG4 9JASG4 9JBSG4 9JDSG4 9JESG4 9JFSG4 9JGSG4 9JHSG4 9JJSG4 9JLSG4 9JNSG4 9JPSG4 9JQSG4 9JRSG4 9JSSG4 9JWSG4 9LASG4 9LBSG4 9LDSG4 9LESG4 9LFSG4 9LGSG4 9LHSG4 9LJSG4 9LLSG4 9LNSG4 9LPSG4 9LQSG4 9LRSG4 9LSSG4 9LTSG4 9LUSG4 9LWSG4 9LXSG4 9LYSG4 9LZSG4 9NASG4 9NBSG4 9NGSG4 9NHSG4 9NJSG4 9NLSG4 9NNSG4 9NPSG4 9NQSG4 9NRSG4 9NSSG4 9NTSG4 9NUSG4 9NWSG4 9NXSG4 9NYSG4 9NZSG4 9PASG4 9PBSG4 9PDSG4 9PGSG4 9PHSG4 9PJSG4 9PLSG4 9PNSG4 9PPSG4 9PRSG4 9PSSG4 9PTSG4 9PWSG4 9PXSG4 9PYSG4 9PZSG4 9QASG4 9QBSG4 9QDSG4 9QESG4 9QFSG4 9QGSG4 9QHSG4 9QJSG4 9QLSG4 9QNSG4 9QPSG4 9QQSG4 9QRSG4 9QSSG4 9QWSG4 9QXSG4 9QYSG4 9QZSG4 9RASG4 9RBSG4 9RDSG4 9RESG4 9RGSG4 9RHSG4 9RJSG4 9RLSG4 9RQSG4 9RSSG4 9RTSG4 9RUSG4 9RWSG4 9RYSG4 9RZSG4 9SASG4 9SBSG4 9SDSG4 9SESG4 9SGSG4 9SJSG4 9SLSG4 9SPSG4 9SQSG4 9SSSG4 9STSG4 9SUSG4 9SXSG4 9SYSG4 9TASG4 9TBSG4 9TESG4 9THSG4 9TLSG4 9TNSG4 9TPSG4 9TSSG4 9TTSG4 9TUSG4 9TWSG4 9TXSG4 9TYSG4 9TZSG4 9UASG4 9UJSG4 9ULSG4 9UNSG4 9UWSG4 9WQSG4 9YDSG4 9YHSG4 9YJ

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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