SL4 6 postcode sector in the SL4 district

SL4 6 is a sector of the SL4 district: every postcode that starts SL4 6. It has 177 postcodes in use, 2 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 6 sector, by flood risk

Map of every postcode in the SL4 6 sector, by flood risk Of the 177 postcodes in the SL4 6 sector that ONS places, 25 have a home or business at high risk, 35 are at medium risk at worst, 103 are at low risk at worst and 14 are at very low risk only. 2 groups of postcodes at high or medium risk are outlined: 27 postcodes at high or medium risk; 8 postcodes at high or medium risk. Places named: Eton, Eton Wick. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A332M4 SL4 6DG: very low flood risk onlySL4 6DJ: very low flood risk onlySL4 6DS: very low flood risk onlySL4 6DZ: very low flood risk onlySL4 6EA: very low flood risk onlySL4 6PA: very low flood risk onlySL4 6QL: very low flood risk onlySL4 6QP: very low flood risk onlySL4 6QT: very low flood risk onlySL4 6QX: very low flood risk onlySL4 6AA: low flood risk at worstSL4 6AB: low flood risk at worstSL4 6AE: low flood risk at worstSL4 6AF: low flood risk at worstSL4 6AG: low flood risk at worstSL4 6AH: low flood risk at worstSL4 6AJ: low flood risk at worstSL4 6AL: low flood risk at worstSL4 6BA: low flood risk at worstSL4 6BD: low flood risk at worstSL4 6BG: low flood risk at worstSL4 6BL: low flood risk at worstSL4 6BY: low flood risk at worstSL4 6DD: low flood risk at worstSL4 6DE: low flood risk at worstSL4 6DN: low flood risk at worstSL4 6DP: low flood risk at worstSL4 6DT: low flood risk at worstSL4 6DX: low flood risk at worstSL4 6DY: low flood risk at worstSL4 6EB: low flood risk at worstSL4 6ED: low flood risk at worstSL4 6EE: low flood risk at worstSL4 6EF: low flood risk at worstSL4 6EH: low flood risk at worstSL4 6EN: low flood risk at worstSL4 6EP: low flood risk at worstSL4 6EQ: low flood risk at worstSL4 6EU: low flood risk at worstSL4 6EX: low flood risk at worstSL4 6EY: low flood risk at worstSL4 6EZ: low flood risk at worstSL4 6FD: low flood risk at worstSL4 6FG: low flood risk at worstSL4 6FJ: low flood risk at worstSL4 6HA: low flood risk at worstSL4 6HB: low flood risk at worstSL4 6HF: low flood risk at worstSL4 6JA: low flood risk at worstSL4 6JB: low flood risk at worstSL4 6JE: low flood risk at worstSL4 6JF: low flood risk at worstSL4 6JG: low flood risk at worstSL4 6JH: low flood risk at worstSL4 6JJ: low flood risk at worstSL4 6JL: low flood risk at worstSL4 6JP: low flood risk at worstSL4 6JR: low flood risk at worstSL4 6JS: low flood risk at worstSL4 6JU: low flood risk at worstSL4 6JW: low flood risk at worstSL4 6JY: low flood risk at worstSL4 6LB: low flood risk at worstSL4 6LD: low flood risk at worstSL4 6LH: low flood risk at worstSL4 6LJ: low flood risk at worstSL4 6LN: low flood risk at worstSL4 6LP: low flood risk at worstSL4 6LT: low flood risk at worstSL4 6LU: low flood risk at worstSL4 6LX: low flood risk at worstSL4 6LY: low flood risk at worstSL4 6LZ: low flood risk at worstSL4 6NA: low flood risk at worstSL4 6NB: low flood risk at worstSL4 6ND: low flood risk at worstSL4 6NE: low flood risk at worstSL4 6NF: low flood risk at worstSL4 6NG: low flood risk at worstSL4 6NH: low flood risk at worstSL4 6NJ: low flood risk at worstSL4 6NL: low flood risk at worstSL4 6NN: low flood risk at worstSL4 6NP: low flood risk at worstSL4 6NQ: low flood risk at worstSL4 6NW: low flood risk at worstSL4 6PE: low flood risk at worstSL4 6PF: low flood risk at worstSL4 6PL: low flood risk at worstSL4 6PQ: low flood risk at worstSL4 6PR: low flood risk at worstSL4 6PS: low flood risk at worstSL4 6PX: low flood risk at worstSL4 6PY: low flood risk at worstSL4 6QA: low flood risk at worstSL4 6QB: low flood risk at worstSL4 6QE: low flood risk at worstSL4 6QF: low flood risk at worstSL4 6QG: low flood risk at worstSL4 6QH: low flood risk at worstSL4 6QJ: low flood risk at worstSL4 6QN: low flood risk at worstSL4 6QQ: low flood risk at worstSL4 6QR: low flood risk at worstSL4 6QW: low flood risk at worstSL4 6SA: low flood risk at worstSL4 6SS: low flood risk at worstSL4 6AN: medium flood risk at worstSL4 6AP: medium flood risk at worstSL4 6AQ: medium flood risk at worstSL4 6AS: medium flood risk at worstSL4 6AX: medium flood risk at worstSL4 6AZ: medium flood risk at worstSL4 6BB: medium flood risk at worstSL4 6BN: medium flood risk at worstSL4 6BP: medium flood risk at worstSL4 6DL: medium flood risk at worstSL4 6DQ: medium flood risk at worstSL4 6EJ: medium flood risk at worstSL4 6ER: medium flood risk at worstSL4 6ET: medium flood risk at worstSL4 6FE: medium flood risk at worstSL4 6HJ: medium flood risk at worstSL4 6JN: medium flood risk at worstSL4 6JT: medium flood risk at worstSL4 6JX: medium flood risk at worstSL4 6JZ: medium flood risk at worstSL4 6LA: medium flood risk at worstSL4 6LE: medium flood risk at worstSL4 6LF: medium flood risk at worstSL4 6LL: medium flood risk at worstSL4 6LQ: medium flood risk at worstSL4 6PB: medium flood risk at worstSL4 6PD: medium flood risk at worstSL4 6PG: medium flood risk at worstSL4 6QD: medium flood risk at worstSL4 6QY: medium flood risk at worstSL4 6QZ: medium flood risk at worstSL4 6RH: medium flood risk at worstSL4 6AR: high flood riskSL4 6BJ: high flood riskSL4 6BQ: high flood riskSL4 6BS: high flood riskSL4 6BT: high flood riskSL4 6BU: high flood riskSL4 6BW: high flood riskSL4 6DB: high flood riskSL4 6DW: high flood riskSL4 6DU: high flood riskSL4 6EG: high flood riskSL4 6ES: high flood riskSL4 6EW: high flood riskSL4 6FB: high flood riskSL4 6HD: high flood riskSL4 6HL: high flood riskSL4 6HN: high flood riskSL4 6HP: high flood riskSL4 6HR: high flood riskSL4 6HU: high flood riskSL4 6HW: high flood riskSL4 6HX: high flood riskSL4 6QS: high flood riskSL4 6QU: high flood riskSL4 6RF: high flood risk EtonEton Wick 27 postcodes at high or medium risk, outlined: this goes to SL4 6FB, the one with most homes and businesses at high risk27 postcodes at high or medium risk8 postcodes at high or medium risk, outlined: this goes to SL4 6LQ, the one with most homes and businesses at high risk8 postcodes at high or medium risk Map of every postcode in the SL4 6 sector, by flood risk Of the 177 postcodes in the SL4 6 sector that ONS places, 25 have a home or business at high risk, 35 are at medium risk at worst, 103 are at low risk at worst and 14 are at very low risk only. 2 groups of postcodes at high or medium risk are outlined: 27 postcodes at high or medium risk; 8 postcodes at high or medium risk. Places named: Eton, Eton Wick. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A308A4 EtonEton Wick
  • A home or business at high risk: 25
  • At medium risk at worst: 35
  • At low risk at worst: 103
  • At very low risk only: 14
  • Not on the at-risk list: 0
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 177 postcodes in the SL4 6 sector that ONS places, 25 have a home or business at high risk, 35 are at medium risk at worst, 103 are at low risk at worst and 14 are at very low risk only.

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. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and 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

25 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

SL4 6HW18 at high riskSL4 6FB12 at high riskSL4 6BT11 at high riskSL4 6HX10 at high riskSL4 6DB8 at high riskSL4 6BJ8 at high riskSL4 6DW7 at high riskSL4 6BW7 at high riskSL4 6HU7 at high riskSL4 6ES7 at high riskSL4 6HN7 at high riskSL4 6RF4 at high risk

Where the postcodes at high or medium risk lie together

  • 27 postcodes at high or medium risk, outlined on the map. SL4 6FB, is the one with most homes and businesses at high risk.
  • 8 postcodes at high or medium risk, outlined on the map. SL4 6LQ, is the one with most homes and businesses at high risk.

What do homes sell for in SL4 6?

Homes in SL4 6 sold for a typical £481,000 in the 12 months to August 2026, across 40 sales, down 2.2% on the 12 months before, HM Land Registry's figures show.

£481,000 typical price, the 12 months to August 2026
£491,750 12 months to August 2025
▼ down 2.2% on the 12 months before
  • Detached £521,500 10 sales
  • Semi-detached £507,500 14 sales
  • Terraced £427,000 11 sales
  • Flat or maisonette £325,000 5 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 6. 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 6

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 6AASL4 6ABSL4 6AESL4 6AFSL4 6AGSL4 6AHSL4 6AJSL4 6ALSL4 6ANSL4 6APSL4 6AQSL4 6ARSL4 6ASSL4 6AWSL4 6AXSL4 6AZSL4 6BASL4 6BBSL4 6BDSL4 6BGSL4 6BHSL4 6BJSL4 6BLSL4 6BNSL4 6BPSL4 6BQSL4 6BSSL4 6BTSL4 6BUSL4 6BWSL4 6BYSL4 6DBSL4 6DDSL4 6DESL4 6DGSL4 6DHSL4 6DJSL4 6DLSL4 6DNSL4 6DPSL4 6DQSL4 6DRSL4 6DSSL4 6DTSL4 6DUSL4 6DWSL4 6DXSL4 6DYSL4 6DZSL4 6EASL4 6EBSL4 6EDSL4 6EESL4 6EFSL4 6EGSL4 6EHSL4 6EJSL4 6ELSL4 6ENSL4 6EPSL4 6EQSL4 6ERSL4 6ESSL4 6ETSL4 6EUSL4 6EWSL4 6EXSL4 6EYSL4 6EZSL4 6FBSL4 6FDSL4 6FESL4 6FFSL4 6FGSL4 6FHSL4 6FJSL4 6HASL4 6HBSL4 6HDSL4 6HESL4 6HFSL4 6HHSL4 6HJSL4 6HLSL4 6HNSL4 6HPSL4 6HRSL4 6HUSL4 6HWSL4 6HXSL4 6JASL4 6JBSL4 6JESL4 6JFSL4 6JGSL4 6JHSL4 6JJSL4 6JLSL4 6JNSL4 6JPSL4 6JRSL4 6JSSL4 6JTSL4 6JUSL4 6JWSL4 6JXSL4 6JYSL4 6JZSL4 6LASL4 6LBSL4 6LDSL4 6LESL4 6LFSL4 6LGSL4 6LHSL4 6LJSL4 6LLSL4 6LNSL4 6LPSL4 6LQSL4 6LTSL4 6LUSL4 6LXSL4 6LYSL4 6LZSL4 6NASL4 6NBSL4 6NDSL4 6NESL4 6NFSL4 6NGSL4 6NHSL4 6NJSL4 6NLSL4 6NNSL4 6NPSL4 6NQSL4 6NWSL4 6PASL4 6PBSL4 6PDSL4 6PESL4 6PFSL4 6PGSL4 6PLSL4 6PPSL4 6PQSL4 6PRSL4 6PSSL4 6PXSL4 6PYSL4 6PZSL4 6QASL4 6QBSL4 6QDSL4 6QESL4 6QFSL4 6QGSL4 6QHSL4 6QJSL4 6QLSL4 6QNSL4 6QPSL4 6QQSL4 6QRSL4 6QSSL4 6QTSL4 6QUSL4 6QWSL4 6QXSL4 6QYSL4 6QZSL4 6RASL4 6RFSL4 6RHSL4 6SASL4 6SS

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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