SL4 4 postcode sector in the SL4 district

SL4 4 is a sector of the SL4 district: every postcode that starts SL4 4. It has 294 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 SL4 4 sector, by flood risk

Map of every postcode in the SL4 4 sector, by flood risk Of the 294 postcodes in the SL4 4 sector that ONS places, 1 have a home or business at high risk, 1 are at medium risk at worst, 3 are at low risk at worst and 289 are not on the Environment Agency's at-risk list. Places named: Windsor. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A332 SL4 4AA: not on the flood risk listSL4 4AB: not on the flood risk listSL4 4AD: not on the flood risk listSL4 4AE: not on the flood risk listSL4 4AF: not on the flood risk listSL4 4AG: not on the flood risk listSL4 4AH: not on the flood risk listSL4 4AJ: not on the flood risk listSL4 4AL: not on the flood risk listSL4 4AN: not on the flood risk listSL4 4AP: not on the flood risk listSL4 4AQ: not on the flood risk listSL4 4AR: not on the flood risk listSL4 4AS: not on the flood risk listSL4 4AT: not on the flood risk listSL4 4AU: not on the flood risk listSL4 4AW: not on the flood risk listSL4 4AX: not on the flood risk listSL4 4AY: not on the flood risk listSL4 4AZ: not on the flood risk listSL4 4BA: not on the flood risk listSL4 4BD: not on the flood risk listSL4 4BE: not on the flood risk listSL4 4BF: not on the flood risk listSL4 4BG: not on the flood risk listSL4 4BH: not on the flood risk listSL4 4BJ: not on the flood risk listSL4 4BL: not on the flood risk listSL4 4BP: not on the flood risk listSL4 4BQ: not on the flood risk listSL4 4BS: not on the flood risk listSL4 4BU: not on the flood risk listSL4 4BW: not on the flood risk listSL4 4BX: not on the flood risk listSL4 4BY: not on the flood risk listSL4 4BZ: not on the flood risk listSL4 4DA: not on the flood risk listSL4 4DB: not on the flood risk listSL4 4DD: not on the flood risk listSL4 4DE: not on the flood risk listSL4 4DH: not on the flood risk listSL4 4DJ: not on the flood risk listSL4 4DN: not on the flood risk listSL4 4DP: not on the flood risk listSL4 4DQ: not on the flood risk listSL4 4DR: not on the flood risk listSL4 4DS: not on the flood risk listSL4 4DU: not on the flood risk listSL4 4DW: not on the flood risk listSL4 4DX: not on the flood risk listSL4 4DY: not on the flood risk listSL4 4DZ: not on the flood risk listSL4 4EB: not on the flood risk listSL4 4ED: not on the flood risk listSL4 4EF: not on the flood risk listSL4 4EG: not on the flood risk listSL4 4EH: not on the flood risk listSL4 4EJ: not on the flood risk listSL4 4EL: not on the flood risk listSL4 4EN: not on the flood risk listSL4 4EP: not on the flood risk listSL4 4ER: not on the flood risk listSL4 4ES: not on the flood risk listSL4 4ET: not on the flood risk listSL4 4EU: not on the flood risk listSL4 4EW: not on the flood risk listSL4 4EX: not on the flood risk listSL4 4EY: not on the flood risk listSL4 4FB: not on the flood risk listSL4 4FG: not on the flood risk listSL4 4FN: not on the flood risk listSL4 4GE: not on the flood risk listSL4 4GY: not on the flood risk listSL4 4HA: not on the flood risk listSL4 4HB: not on the flood risk listSL4 4HD: not on the flood risk listSL4 4HE: not on the flood risk listSL4 4HF: not on the flood risk listSL4 4HG: not on the flood risk listSL4 4HH: not on the flood risk listSL4 4HJ: not on the flood risk listSL4 4HL: not on the flood risk listSL4 4HQ: not on the flood risk listSL4 4HR: not on the flood risk listSL4 4HS: not on the flood risk listSL4 4HU: not on the flood risk listSL4 4HY: not on the flood risk listSL4 4HZ: not on the flood risk listSL4 4JA: not on the flood risk listSL4 4JB: not on the flood risk listSL4 4JD: not on the flood risk listSL4 4JE: not on the flood risk listSL4 4JF: not on the flood risk listSL4 4JG: not on the flood risk listSL4 4JH: not on the flood risk listSL4 4JJ: not on the flood risk listSL4 4JL: not on the flood risk listSL4 4JN: not on the flood risk listSL4 4JP: not on the flood risk listSL4 4JQ: not on the flood risk listSL4 4JR: not on the flood risk listSL4 4JS: not on the flood risk listSL4 4JT: not on the flood risk listSL4 4JU: not on the flood risk listSL4 4JW: not on the flood risk listSL4 4JX: not on the flood risk listSL4 4JY: not on the flood risk listSL4 4JZ: not on the flood risk listSL4 4LE: not on the flood risk listSL4 4LF: not on the flood risk listSL4 4LH: not on the flood risk listSL4 4LN: not on the flood risk listSL4 4LP: not on the flood risk listSL4 4LR: not on the flood risk listSL4 4LS: not on the flood risk listSL4 4LY: not on the flood risk listSL4 4LZ: not on the flood risk listSL4 4NA: not on the flood risk listSL4 4NB: not on the flood risk listSL4 4NE: not on the flood risk listSL4 4NF: not on the flood risk listSL4 4NG: not on the flood risk listSL4 4NH: not on the flood risk listSL4 4NJ: not on the flood risk listSL4 4NL: not on the flood risk listSL4 4NN: not on the flood risk listSL4 4NP: not on the flood risk listSL4 4NQ: not on the flood risk listSL4 4NR: not on the flood risk listSL4 4NS: not on the flood risk listSL4 4NT: not on the flood risk listSL4 4NW: not on the flood risk listSL4 4NY: not on the flood risk listSL4 4PA: not on the flood risk listSL4 4PB: not on the flood risk listSL4 4PD: not on the flood risk listSL4 4PE: not on the flood risk listSL4 4PF: not on the flood risk listSL4 4PG: not on the flood risk listSL4 4PH: not on the flood risk listSL4 4PJ: not on the flood risk listSL4 4PL: not on the flood risk listSL4 4PN: not on the flood risk listSL4 4PP: not on the flood risk listSL4 4PQ: not on the flood risk listSL4 4PS: not on the flood risk listSL4 4PT: not on the flood risk listSL4 4PU: not on the flood risk listSL4 4PW: not on the flood risk listSL4 4PX: not on the flood risk listSL4 4PY: not on the flood risk listSL4 4QA: not on the flood risk listSL4 4QD: not on the flood risk listSL4 4QE: not on the flood risk listSL4 4QF: not on the flood risk listSL4 4QG: not on the flood risk listSL4 4QH: not on the flood risk listSL4 4QJ: not on the flood risk listSL4 4QL: not on the flood risk listSL4 4QN: not on the flood risk listSL4 4QP: not on the flood risk listSL4 4QR: not on the flood risk listSL4 4QS: not on the flood risk listSL4 4QT: not on the flood risk listSL4 4QU: not on the flood risk listSL4 4QW: not on the flood risk listSL4 4QY: not on the flood risk listSL4 4QZ: not on the flood risk listSL4 4RA: not on the flood risk listSL4 4RB: not on the flood risk listSL4 4RE: not on the flood risk listSL4 4RH: not on the flood risk listSL4 4RJ: not on the flood risk listSL4 4RL: not on the flood risk listSL4 4RP: not on the flood risk listSL4 4RR: not on the flood risk listSL4 4RS: not on the flood risk listSL4 4RU: not on the flood risk listSL4 4RW: not on the flood risk listSL4 4RX: not on the flood risk listSL4 4RZ: not on the flood risk listSL4 4SA: not on the flood risk listSL4 4SB: not on the flood risk listSL4 4SD: not on the flood risk listSL4 4SG: not on the flood risk listSL4 4SJ: not on the flood risk listSL4 4SL: not on the flood risk listSL4 4SN: not on the flood risk listSL4 4SP: not on the flood risk listSL4 4SR: not on the flood risk listSL4 4SS: not on the flood risk listSL4 4SU: not on the flood risk listSL4 4SW: not on the flood risk listSL4 4SY: not on the flood risk listSL4 4SZ: not on the flood risk listSL4 4TA: not on the flood risk listSL4 4TE: not on the flood risk listSL4 4TF: not on the flood risk listSL4 4TG: not on the flood risk listSL4 4TH: not on the flood risk listSL4 4TL: not on the flood risk listSL4 4TN: not on the flood risk listSL4 4TP: not on the flood risk listSL4 4TR: not on the flood risk listSL4 4TS: not on the flood risk listSL4 4TT: not on the flood risk listSL4 4TW: not on the flood risk listSL4 4TX: not on the flood risk listSL4 4TY: not on the flood risk listSL4 4TZ: not on the flood risk listSL4 4UA: not on the flood risk listSL4 4UB: not on the flood risk listSL4 4UD: not on the flood risk listSL4 4UE: not on the flood risk listSL4 4UF: not on the flood risk listSL4 4UH: not on the flood risk listSL4 4UL: not on the flood risk listSL4 4UN: not on the flood risk listSL4 4UP: not on the flood risk listSL4 4UQ: not on the flood risk listSL4 4UR: not on the flood risk listSL4 4US: not on the flood risk listSL4 4UT: not on the flood risk listSL4 4WA: not on the flood risk listSL4 4XA: not on the flood risk listSL4 4XD: not on the flood risk listSL4 4XE: not on the flood risk listSL4 4XG: not on the flood risk listSL4 4XH: not on the flood risk listSL4 4XJ: not on the flood risk listSL4 4XL: not on the flood risk listSL4 4XP: not on the flood risk listSL4 4XR: not on the flood risk listSL4 4XS: not on the flood risk listSL4 4XU: not on the flood risk listSL4 4XW: not on the flood risk listSL4 4XX: not on the flood risk listSL4 4YA: not on the flood risk listSL4 4YB: not on the flood risk listSL4 4YE: not on the flood risk listSL4 4YF: not on the flood risk listSL4 4YG: not on the flood risk listSL4 4YH: not on the flood risk listSL4 4YJ: not on the flood risk listSL4 4YL: not on the flood risk listSL4 4YN: not on the flood risk listSL4 4YP: not on the flood risk listSL4 4YQ: not on the flood risk listSL4 4YR: not on the flood risk listSL4 4YS: not on the flood risk listSL4 4YU: not on the flood risk listSL4 4YW: not on the flood risk listSL4 4YX: not on the flood risk listSL4 4YY: not on the flood risk listSL4 4YZ: not on the flood risk listSL4 4QQ: low flood risk at worstSL4 4SE: low flood risk at worstSL4 4SH: low flood risk at worstSL4 4PZ: medium flood risk at worstSL4 4SF: high flood risk Windsor Map of every postcode in the SL4 4 sector, by flood risk Of the 294 postcodes in the SL4 4 sector that ONS places, 1 have a home or business at high risk, 1 are at medium risk at worst, 3 are at low risk at worst and 289 are not on the Environment Agency's at-risk list. Places named: Windsor. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. A332 Windsor
  • A home or business at high risk: 1
  • At medium risk at worst: 1
  • At low risk at worst: 3
  • At very low risk only: 0
  • Not on the at-risk list: 289

Of the 294 postcodes in the SL4 4 sector that ONS places, 1 have a home or business at high risk, 1 are at medium risk at worst, 3 are at low risk at worst and 289 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.

SL4 4SF2 at high risk

What do homes sell for in SL4 4?

Homes in SL4 4 sold for a typical £520,000 in the 12 months to August 2026, across 83 sales, up 12.7% on the 12 months before, HM Land Registry's figures show.

£520,000 typical price, the 12 months to August 2026
£461,250 12 months to August 2025
▲ up 12.7% on the 12 months before
  • Detached £852,000 27 sales
  • Semi-detached £610,000 14 sales
  • Terraced £450,000 28 sales
  • Flat or maisonette £285,000 14 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 SL4 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 SL4 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.

SL4 4AASL4 4ABSL4 4ADSL4 4AESL4 4AFSL4 4AGSL4 4AHSL4 4AJSL4 4ALSL4 4ANSL4 4APSL4 4AQSL4 4ARSL4 4ASSL4 4ATSL4 4AUSL4 4AWSL4 4AXSL4 4AYSL4 4AZSL4 4BASL4 4BDSL4 4BESL4 4BFSL4 4BGSL4 4BHSL4 4BJSL4 4BLSL4 4BPSL4 4BQSL4 4BSSL4 4BTSL4 4BUSL4 4BWSL4 4BXSL4 4BYSL4 4BZSL4 4DASL4 4DBSL4 4DDSL4 4DESL4 4DHSL4 4DJSL4 4DNSL4 4DPSL4 4DQSL4 4DRSL4 4DSSL4 4DTSL4 4DUSL4 4DWSL4 4DXSL4 4DYSL4 4DZSL4 4EASL4 4EBSL4 4EDSL4 4EFSL4 4EGSL4 4EHSL4 4EJSL4 4ELSL4 4ENSL4 4EPSL4 4ERSL4 4ESSL4 4ETSL4 4EUSL4 4EWSL4 4EXSL4 4EYSL4 4FBSL4 4FGSL4 4FNSL4 4GESL4 4GYSL4 4HASL4 4HBSL4 4HDSL4 4HESL4 4HFSL4 4HGSL4 4HHSL4 4HJSL4 4HLSL4 4HQSL4 4HRSL4 4HSSL4 4HTSL4 4HUSL4 4HXSL4 4HYSL4 4HZSL4 4JASL4 4JBSL4 4JDSL4 4JESL4 4JFSL4 4JGSL4 4JHSL4 4JJSL4 4JLSL4 4JNSL4 4JPSL4 4JQSL4 4JRSL4 4JSSL4 4JTSL4 4JUSL4 4JWSL4 4JXSL4 4JYSL4 4JZSL4 4LASL4 4LBSL4 4LDSL4 4LESL4 4LFSL4 4LGSL4 4LHSL4 4LJSL4 4LLSL4 4LNSL4 4LPSL4 4LRSL4 4LSSL4 4LWSL4 4LYSL4 4LZSL4 4NASL4 4NBSL4 4NDSL4 4NESL4 4NFSL4 4NGSL4 4NHSL4 4NJSL4 4NLSL4 4NNSL4 4NPSL4 4NQSL4 4NRSL4 4NSSL4 4NTSL4 4NWSL4 4NYSL4 4NZSL4 4PASL4 4PBSL4 4PDSL4 4PESL4 4PFSL4 4PGSL4 4PHSL4 4PJSL4 4PLSL4 4PNSL4 4PPSL4 4PQSL4 4PRSL4 4PSSL4 4PTSL4 4PUSL4 4PWSL4 4PXSL4 4PYSL4 4PZSL4 4QASL4 4QDSL4 4QESL4 4QFSL4 4QGSL4 4QHSL4 4QJSL4 4QLSL4 4QNSL4 4QPSL4 4QQSL4 4QRSL4 4QSSL4 4QTSL4 4QUSL4 4QWSL4 4QXSL4 4QYSL4 4QZSL4 4RASL4 4RBSL4 4RESL4 4RHSL4 4RJSL4 4RLSL4 4RNSL4 4RPSL4 4RRSL4 4RSSL4 4RUSL4 4RWSL4 4RXSL4 4RZSL4 4SASL4 4SBSL4 4SDSL4 4SESL4 4SFSL4 4SGSL4 4SHSL4 4SJSL4 4SLSL4 4SNSL4 4SPSL4 4SQSL4 4SRSL4 4SSSL4 4STSL4 4SUSL4 4SWSL4 4SXSL4 4SYSL4 4SZSL4 4TASL4 4TBSL4 4TESL4 4TFSL4 4TGSL4 4THSL4 4TJSL4 4TLSL4 4TNSL4 4TPSL4 4TRSL4 4TSSL4 4TTSL4 4TUSL4 4TWSL4 4TXSL4 4TYSL4 4TZSL4 4UASL4 4UBSL4 4UDSL4 4UESL4 4UFSL4 4UGSL4 4UHSL4 4ULSL4 4UNSL4 4UPSL4 4UQSL4 4URSL4 4USSL4 4UTSL4 4UWSL4 4WASL4 4XASL4 4XDSL4 4XESL4 4XFSL4 4XGSL4 4XHSL4 4XJSL4 4XLSL4 4XNSL4 4XPSL4 4XQSL4 4XRSL4 4XSSL4 4XTSL4 4XUSL4 4XWSL4 4XXSL4 4XYSL4 4XZSL4 4YASL4 4YBSL4 4YDSL4 4YESL4 4YFSL4 4YGSL4 4YHSL4 4YJSL4 4YLSL4 4YNSL4 4YPSL4 4YQSL4 4YRSL4 4YSSL4 4YTSL4 4YUSL4 4YWSL4 4YXSL4 4YYSL4 4YZSL4 4ZQ

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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