SE23 3 postcode sector in the SE23 district

SE23 3 is a sector of the SE23 district: every postcode that starts SE23 3. It has 248 postcodes in use, 6 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 SE23 3 sector, by flood risk

Map of every postcode in the SE23 3 sector, by flood risk Of the 248 postcodes in the SE23 3 sector that ONS places, 248 are not on the Environment Agency's at-risk list. Places named: Forest Hill. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. SE23 3AA: not on the flood risk listSE23 3AB: not on the flood risk listSE23 3AD: not on the flood risk listSE23 3AE: not on the flood risk listSE23 3AF: not on the flood risk listSE23 3AG: not on the flood risk listSE23 3AH: not on the flood risk listSE23 3AJ: not on the flood risk listSE23 3AL: not on the flood risk listSE23 3AN: not on the flood risk listSE23 3AP: not on the flood risk listSE23 3AQ: not on the flood risk listSE23 3AS: not on the flood risk listSE23 3AT: not on the flood risk listSE23 3AU: not on the flood risk listSE23 3AW: not on the flood risk listSE23 3AY: not on the flood risk listSE23 3BA: not on the flood risk listSE23 3BF: not on the flood risk listSE23 3BG: not on the flood risk listSE23 3BH: not on the flood risk listSE23 3BJ: not on the flood risk listSE23 3BL: not on the flood risk listSE23 3BN: not on the flood risk listSE23 3BP: not on the flood risk listSE23 3BQ: not on the flood risk listSE23 3BS: not on the flood risk listSE23 3BU: not on the flood risk listSE23 3BW: not on the flood risk listSE23 3BX: not on the flood risk listSE23 3BY: not on the flood risk listSE23 3BZ: not on the flood risk listSE23 3DB: not on the flood risk listSE23 3DD: not on the flood risk listSE23 3DE: not on the flood risk listSE23 3DF: not on the flood risk listSE23 3DG: not on the flood risk listSE23 3DH: not on the flood risk listSE23 3DJ: not on the flood risk listSE23 3DL: not on the flood risk listSE23 3DN: not on the flood risk listSE23 3DP: not on the flood risk listSE23 3DQ: not on the flood risk listSE23 3DR: not on the flood risk listSE23 3DS: not on the flood risk listSE23 3DT: not on the flood risk listSE23 3DU: not on the flood risk listSE23 3DW: not on the flood risk listSE23 3DY: not on the flood risk listSE23 3DZ: not on the flood risk listSE23 3EA: not on the flood risk listSE23 3EB: not on the flood risk listSE23 3ED: not on the flood risk listSE23 3EE: not on the flood risk listSE23 3EF: not on the flood risk listSE23 3EG: not on the flood risk listSE23 3EH: not on the flood risk listSE23 3EL: not on the flood risk listSE23 3EN: not on the flood risk listSE23 3EP: not on the flood risk listSE23 3EQ: not on the flood risk listSE23 3ER: not on the flood risk listSE23 3ES: not on the flood risk listSE23 3ET: not on the flood risk listSE23 3EU: not on the flood risk listSE23 3EX: not on the flood risk listSE23 3EY: not on the flood risk listSE23 3FB: not on the flood risk listSE23 3FD: not on the flood risk listSE23 3GD: not on the flood risk listSE23 3HA: not on the flood risk listSE23 3HB: not on the flood risk listSE23 3HD: not on the flood risk listSE23 3HE: not on the flood risk listSE23 3HF: not on the flood risk listSE23 3HG: not on the flood risk listSE23 3HH: not on the flood risk listSE23 3HN: not on the flood risk listSE23 3HQ: not on the flood risk listSE23 3HS: not on the flood risk listSE23 3HU: not on the flood risk listSE23 3HW: not on the flood risk listSE23 3HX: not on the flood risk listSE23 3HY: not on the flood risk listSE23 3HZ: not on the flood risk listSE23 3JF: not on the flood risk listSE23 3JG: not on the flood risk listSE23 3JJ: not on the flood risk listSE23 3LB: not on the flood risk listSE23 3LD: not on the flood risk listSE23 3LE: not on the flood risk listSE23 3LF: not on the flood risk listSE23 3LH: not on the flood risk listSE23 3LR: not on the flood risk listSE23 3LU: not on the flood risk listSE23 3LW: not on the flood risk listSE23 3LX: not on the flood risk listSE23 3LY: not on the flood risk listSE23 3LZ: not on the flood risk listSE23 3NA: not on the flood risk listSE23 3NB: not on the flood risk listSE23 3ND: not on the flood risk listSE23 3NH: not on the flood risk listSE23 3NJ: not on the flood risk listSE23 3NL: not on the flood risk listSE23 3NN: not on the flood risk listSE23 3NP: not on the flood risk listSE23 3NR: not on the flood risk listSE23 3NS: not on the flood risk listSE23 3NT: not on the flood risk listSE23 3NW: not on the flood risk listSE23 3PA: not on the flood risk listSE23 3PE: not on the flood risk listSE23 3PF: not on the flood risk listSE23 3PG: not on the flood risk listSE23 3PH: not on the flood risk listSE23 3PJ: not on the flood risk listSE23 3PL: not on the flood risk listSE23 3PN: not on the flood risk listSE23 3PP: not on the flood risk listSE23 3PQ: not on the flood risk listSE23 3PR: not on the flood risk listSE23 3PS: not on the flood risk listSE23 3PU: not on the flood risk listSE23 3PW: not on the flood risk listSE23 3PY: not on the flood risk listSE23 3PZ: not on the flood risk listSE23 3QA: not on the flood risk listSE23 3QB: not on the flood risk listSE23 3QD: not on the flood risk listSE23 3QE: not on the flood risk listSE23 3QF: not on the flood risk listSE23 3QG: not on the flood risk listSE23 3QH: not on the flood risk listSE23 3QL: not on the flood risk listSE23 3QN: not on the flood risk listSE23 3QP: not on the flood risk listSE23 3QQ: not on the flood risk listSE23 3QR: not on the flood risk listSE23 3QS: not on the flood risk listSE23 3QT: not on the flood risk listSE23 3QU: not on the flood risk listSE23 3QX: not on the flood risk listSE23 3QY: not on the flood risk listSE23 3QZ: not on the flood risk listSE23 3RA: not on the flood risk listSE23 3RD: not on the flood risk listSE23 3RE: not on the flood risk listSE23 3RF: not on the flood risk listSE23 3RG: not on the flood risk listSE23 3RJ: not on the flood risk listSE23 3RL: not on the flood risk listSE23 3RN: not on the flood risk listSE23 3RP: not on the flood risk listSE23 3RR: not on the flood risk listSE23 3RS: not on the flood risk listSE23 3RT: not on the flood risk listSE23 3RU: not on the flood risk listSE23 3RW: not on the flood risk listSE23 3RX: not on the flood risk listSE23 3RY: not on the flood risk listSE23 3RZ: not on the flood risk listSE23 3SA: not on the flood risk listSE23 3SB: not on the flood risk listSE23 3SD: not on the flood risk listSE23 3SE: not on the flood risk listSE23 3SF: not on the flood risk listSE23 3SG: not on the flood risk listSE23 3SH: not on the flood risk listSE23 3SJ: not on the flood risk listSE23 3SL: not on the flood risk listSE23 3SQ: not on the flood risk listSE23 3SR: not on the flood risk listSE23 3SU: not on the flood risk listSE23 3SW: not on the flood risk listSE23 3SX: not on the flood risk listSE23 3SY: not on the flood risk listSE23 3SZ: not on the flood risk listSE23 3TA: not on the flood risk listSE23 3TB: not on the flood risk listSE23 3TD: not on the flood risk listSE23 3TE: not on the flood risk listSE23 3TF: not on the flood risk listSE23 3TG: not on the flood risk listSE23 3TH: not on the flood risk listSE23 3TL: not on the flood risk listSE23 3TQ: not on the flood risk listSE23 3TS: not on the flood risk listSE23 3TT: not on the flood risk listSE23 3TU: not on the flood risk listSE23 3TW: not on the flood risk listSE23 3TX: not on the flood risk listSE23 3TY: not on the flood risk listSE23 3TZ: not on the flood risk listSE23 3UB: not on the flood risk listSE23 3UD: not on the flood risk listSE23 3UE: not on the flood risk listSE23 3UF: not on the flood risk listSE23 3UG: not on the flood risk listSE23 3UH: not on the flood risk listSE23 3UL: not on the flood risk listSE23 3UN: not on the flood risk listSE23 3UP: not on the flood risk listSE23 3UQ: not on the flood risk listSE23 3UR: not on the flood risk listSE23 3US: not on the flood risk listSE23 3UT: not on the flood risk listSE23 3UU: not on the flood risk listSE23 3UW: not on the flood risk listSE23 3UX: not on the flood risk listSE23 3UZ: not on the flood risk listSE23 3XA: not on the flood risk listSE23 3XB: not on the flood risk listSE23 3XD: not on the flood risk listSE23 3XE: not on the flood risk listSE23 3XF: not on the flood risk listSE23 3XG: not on the flood risk listSE23 3XH: not on the flood risk listSE23 3XJ: not on the flood risk listSE23 3XL: not on the flood risk listSE23 3XN: not on the flood risk listSE23 3XP: not on the flood risk listSE23 3XQ: not on the flood risk listSE23 3XR: not on the flood risk listSE23 3XT: not on the flood risk listSE23 3XU: not on the flood risk listSE23 3XW: not on the flood risk listSE23 3YA: not on the flood risk listSE23 3YD: not on the flood risk listSE23 3YE: not on the flood risk listSE23 3YF: not on the flood risk listSE23 3YG: not on the flood risk listSE23 3YH: not on the flood risk listSE23 3YJ: not on the flood risk listSE23 3YL: not on the flood risk listSE23 3YN: not on the flood risk listSE23 3YP: not on the flood risk listSE23 3YQ: not on the flood risk listSE23 3YR: not on the flood risk listSE23 3YW: not on the flood risk list Forest Hill Map of every postcode in the SE23 3 sector, by flood risk Of the 248 postcodes in the SE23 3 sector that ONS places, 248 are not on the Environment Agency's at-risk list. Places named: Forest Hill. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Forest Hill
  • 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: 248

Of the 248 postcodes in the SE23 3 sector that ONS places, 248 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. Names in italics are council wards: we hold no town or village names here.

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 SE23 3?

Homes in SE23 3 sold for a typical £462,000 in the 12 months to August 2026, across 125 sales, down 2.2% on the 12 months before, HM Land Registry's figures show.

£462,000 typical price, the 12 months to August 2026
£472,500 12 months to August 2025
▼ down 2.2% on the 12 months before
  • Detached £950,000 7 sales
  • Semi-detached £948,000 19 sales
  • Terraced £754,895 20 sales
  • Flat or maisonette £400,000 79 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 SE23 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 SE23 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.

SE23 3AASE23 3ABSE23 3ADSE23 3AESE23 3AFSE23 3AGSE23 3AHSE23 3AJSE23 3ALSE23 3ANSE23 3APSE23 3AQSE23 3ASSE23 3ATSE23 3AUSE23 3AWSE23 3AYSE23 3BASE23 3BFSE23 3BGSE23 3BHSE23 3BJSE23 3BLSE23 3BNSE23 3BPSE23 3BQSE23 3BSSE23 3BUSE23 3BWSE23 3BXSE23 3BYSE23 3BZSE23 3DBSE23 3DDSE23 3DESE23 3DFSE23 3DGSE23 3DHSE23 3DJSE23 3DLSE23 3DNSE23 3DPSE23 3DQSE23 3DRSE23 3DSSE23 3DTSE23 3DUSE23 3DWSE23 3DXSE23 3DYSE23 3DZSE23 3EASE23 3EBSE23 3EDSE23 3EESE23 3EFSE23 3EGSE23 3EHSE23 3ELSE23 3ENSE23 3EPSE23 3EQSE23 3ERSE23 3ESSE23 3ETSE23 3EUSE23 3EXSE23 3EYSE23 3FBSE23 3FDSE23 3GDSE23 3HASE23 3HBSE23 3HDSE23 3HESE23 3HFSE23 3HGSE23 3HHSE23 3HJSE23 3HNSE23 3HQSE23 3HSSE23 3HTSE23 3HUSE23 3HWSE23 3HXSE23 3HYSE23 3HZSE23 3JFSE23 3JGSE23 3JJSE23 3JYSE23 3LBSE23 3LDSE23 3LESE23 3LFSE23 3LHSE23 3LRSE23 3LUSE23 3LWSE23 3LXSE23 3LYSE23 3LZSE23 3NASE23 3NBSE23 3NDSE23 3NHSE23 3NJSE23 3NLSE23 3NNSE23 3NPSE23 3NRSE23 3NSSE23 3NTSE23 3NWSE23 3PASE23 3PESE23 3PFSE23 3PGSE23 3PHSE23 3PJSE23 3PLSE23 3PNSE23 3PPSE23 3PQSE23 3PRSE23 3PSSE23 3PUSE23 3PWSE23 3PYSE23 3PZSE23 3QASE23 3QBSE23 3QDSE23 3QESE23 3QFSE23 3QGSE23 3QHSE23 3QLSE23 3QNSE23 3QPSE23 3QQSE23 3QRSE23 3QSSE23 3QTSE23 3QUSE23 3QXSE23 3QYSE23 3QZSE23 3RASE23 3RDSE23 3RESE23 3RFSE23 3RGSE23 3RJSE23 3RLSE23 3RNSE23 3RPSE23 3RRSE23 3RSSE23 3RTSE23 3RUSE23 3RWSE23 3RXSE23 3RYSE23 3RZSE23 3SASE23 3SBSE23 3SDSE23 3SESE23 3SFSE23 3SGSE23 3SHSE23 3SJSE23 3SLSE23 3SQSE23 3SRSE23 3SUSE23 3SWSE23 3SXSE23 3SYSE23 3SZSE23 3TASE23 3TBSE23 3TDSE23 3TESE23 3TFSE23 3TGSE23 3THSE23 3TJSE23 3TLSE23 3TQSE23 3TSSE23 3TTSE23 3TUSE23 3TWSE23 3TXSE23 3TYSE23 3TZSE23 3UBSE23 3UDSE23 3UESE23 3UFSE23 3UGSE23 3UHSE23 3UJSE23 3ULSE23 3UNSE23 3UPSE23 3UQSE23 3URSE23 3USSE23 3UTSE23 3UUSE23 3UWSE23 3UXSE23 3UZSE23 3WJSE23 3XASE23 3XBSE23 3XDSE23 3XESE23 3XFSE23 3XGSE23 3XHSE23 3XJSE23 3XLSE23 3XNSE23 3XPSE23 3XQSE23 3XRSE23 3XTSE23 3XUSE23 3XWSE23 3YASE23 3YDSE23 3YESE23 3YFSE23 3YGSE23 3YHSE23 3YJSE23 3YLSE23 3YNSE23 3YPSE23 3YQSE23 3YRSE23 3YWSE23 3ZH

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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