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 gigabit broadband

Map of every postcode in the SL4 6 sector, by gigabit broadband Of the 177 postcodes in the SL4 6 sector that ONS places, 49 have no home or business that can get gigabit, 22 have some that can, 75 can all get it and 31 have no Ofcom figure. One group of postcodes without gigabit is outlined: 19 postcodes without gigabit. Places named: Eton, Eton Wick. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A332M4 SL4 6DE: no Ofcom figureSL4 6DG: no Ofcom figureSL4 6DJ: no Ofcom figureSL4 6DL: no Ofcom figureSL4 6DN: no Ofcom figureSL4 6DQ: no Ofcom figureSL4 6DS: no Ofcom figureSL4 6DX: no Ofcom figureSL4 6DZ: no Ofcom figureSL4 6EA: no Ofcom figureSL4 6ED: no Ofcom figureSL4 6EE: no Ofcom figureSL4 6EF: no Ofcom figureSL4 6EH: no Ofcom figureSL4 6EJ: no Ofcom figureSL4 6EN: no Ofcom figureSL4 6EP: no Ofcom figureSL4 6ES: no Ofcom figureSL4 6EU: no Ofcom figureSL4 6EW: no Ofcom figureSL4 6EX: no Ofcom figureSL4 6EY: no Ofcom figureSL4 6EZ: no Ofcom figureSL4 6FJ: no Ofcom figureSL4 6HA: no Ofcom figureSL4 6HB: no Ofcom figureSL4 6HU: no Ofcom figureSL4 6AH: gigabit for allSL4 6AZ: gigabit for allSL4 6BA: gigabit for allSL4 6BJ: gigabit for allSL4 6BU: gigabit for allSL4 6DW: gigabit for allSL4 6DT: gigabit for allSL4 6DY: gigabit for allSL4 6FG: gigabit for allSL4 6HD: gigabit for allSL4 6JA: gigabit for allSL4 6JE: gigabit for allSL4 6JF: gigabit for allSL4 6JG: gigabit for allSL4 6JJ: gigabit for allSL4 6JL: gigabit for allSL4 6JN: gigabit for allSL4 6JP: gigabit for allSL4 6JR: gigabit for allSL4 6JS: gigabit for allSL4 6JT: gigabit for allSL4 6JU: gigabit for allSL4 6JW: gigabit for allSL4 6JX: gigabit for allSL4 6JY: gigabit for allSL4 6JZ: gigabit for allSL4 6LA: gigabit for allSL4 6LB: gigabit for allSL4 6LD: gigabit for allSL4 6LE: gigabit for allSL4 6LF: gigabit for allSL4 6LJ: gigabit for allSL4 6LN: gigabit for allSL4 6LP: gigabit for allSL4 6LT: gigabit for allSL4 6LU: gigabit for allSL4 6LX: gigabit for allSL4 6LZ: gigabit for allSL4 6NA: gigabit for allSL4 6NB: gigabit for allSL4 6ND: gigabit for allSL4 6NE: gigabit for allSL4 6NF: gigabit for allSL4 6NG: gigabit for allSL4 6NH: gigabit for allSL4 6NJ: gigabit for allSL4 6NL: gigabit for allSL4 6NN: gigabit for allSL4 6NP: gigabit for allSL4 6NQ: gigabit for allSL4 6NW: gigabit for allSL4 6PA: gigabit for allSL4 6PB: gigabit for allSL4 6PD: gigabit for allSL4 6PE: gigabit for allSL4 6PF: gigabit for allSL4 6PG: gigabit for allSL4 6PL: gigabit for allSL4 6PQ: gigabit for allSL4 6PR: gigabit for allSL4 6PS: gigabit for allSL4 6PX: gigabit for allSL4 6PY: gigabit for allSL4 6QE: gigabit for allSL4 6QF: gigabit for allSL4 6QG: gigabit for allSL4 6RH: gigabit for allSL4 6SA: gigabit for allSL4 6AA: some gigabitSL4 6AB: some gigabitSL4 6AP: some gigabitSL4 6AR: some gigabitSL4 6AS: some gigabitSL4 6AX: some gigabitSL4 6BB: some gigabitSL4 6BD: some gigabitSL4 6BL: some gigabitSL4 6DB: some gigabitSL4 6DU: some gigabitSL4 6ET: some gigabitSL4 6HL: some gigabitSL4 6JB: some gigabitSL4 6JH: some gigabitSL4 6LL: some gigabitSL4 6LQ: some gigabitSL4 6LY: some gigabitSL4 6QD: some gigabitSL4 6QQ: some gigabitSL4 6AE: no gigabitSL4 6AF: no gigabitSL4 6AG: no gigabitSL4 6AJ: no gigabitSL4 6AL: no gigabitSL4 6AQ: no gigabitSL4 6BG: no gigabitSL4 6BN: no gigabitSL4 6BP: no gigabitSL4 6BQ: no gigabitSL4 6BS: no gigabitSL4 6BT: no gigabitSL4 6BW: no gigabitSL4 6BY: no gigabitSL4 6DD: no gigabitSL4 6DP: no gigabitSL4 6EB: no gigabitSL4 6EG: no gigabitSL4 6EQ: no gigabitSL4 6ER: no gigabitSL4 6FB: no gigabitSL4 6FD: no gigabitSL4 6FE: no gigabitSL4 6HN: no gigabitSL4 6HP: no gigabitSL4 6HR: no gigabitSL4 6HW: no gigabitSL4 6HX: no gigabitSL4 6LH: no gigabitSL4 6QA: no gigabitSL4 6QB: no gigabitSL4 6QH: no gigabitSL4 6QJ: no gigabitSL4 6QL: no gigabitSL4 6QN: no gigabitSL4 6QP: no gigabitSL4 6QR: no gigabitSL4 6QS: no gigabitSL4 6QT: no gigabitSL4 6QU: no gigabitSL4 6QW: no gigabitSL4 6QX: no gigabitSL4 6QY: no gigabitSL4 6QZ: no gigabitSL4 6RF: no gigabitSL4 6SS: no gigabitSL4 6AW: no gigabitSL4 6HE: no gigabitSL4 6HH: no gigabit EtonEton Wick 19 postcodes without gigabit, outlined: this goes to SL4 6AF, the one nearest the middle of them19 postcodes without gigabit Map of every postcode in the SL4 6 sector, by gigabit broadband Of the 177 postcodes in the SL4 6 sector that ONS places, 49 have no home or business that can get gigabit, 22 have some that can, 75 can all get it and 31 have no Ofcom figure. One group of postcodes without gigabit is outlined: 19 postcodes without gigabit. 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
  • No home or business can get gigabit: 49
  • Some can get gigabit: 22
  • Every home and business can get gigabit: 75
  • Ofcom gives no figure: 31
  • Outline: where 5 or more postcodes without gigabit lie together

Of the 177 postcodes in the SL4 6 sector that ONS places, 49 have no home or business that can get gigabit, 22 have some that can, 75 can all get it and 31 have no Ofcom figure.

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.

Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; Ofcom Connected Nations, Connected Nations, Spring 2026; roads, rivers and built-up areas: Ordnance Survey open maps. 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.

Postcodes without gigabit

49 postcodes here have no gigabit. These are the 12 first in postcode order.

SL4 6AESL4 6AFSL4 6AGSL4 6AJSL4 6ALSL4 6AQSL4 6AWSL4 6BGSL4 6BNSL4 6BPSL4 6BQSL4 6BS

Where the postcodes without gigabit lie together

  • 19 postcodes without gigabit, outlined on the map. SL4 6AF, is the one nearest the middle of them.

What do homes sell for in SL4 6?

Homes in SL4 6 sold for a typical £497,500 in the 12 months to September 2026, across 36 sales, HM Land Registry's figures show. The 12 months before gave £482,000 from 49 sales: not a change larger than chance would explain, given which homes happened to sell.

£497,500 typical price, the 12 months to September 2026
£482,000 12 months to September 2025
  • Detached £521,500 10 sales
  • Semi-detached £540,000 11 sales
  • Terraced £433,500 10 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 October 2026.

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: ONS Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed.

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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Where the facts on this page come from

Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.

Licence: Open Government Licence v3.0.

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