SL6 3 postcode sector in the SL6 district

SL6 3 is a sector of the SL6 district: every postcode that starts SL6 3. It has 274 postcodes in use, 7 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 SL6 3 sector, by flood risk

Map of every postcode in the SL6 3 sector, by flood risk Of the 274 postcodes in the SL6 3 sector that ONS places, 2 have a home or business at high risk, 1 are at medium risk at worst, 15 are at low risk at worst and 256 are not on the Environment Agency's at-risk list. Places named: Maidenhead. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. M4A404 SL6 3AD: not on the flood risk listSL6 3AE: not on the flood risk listSL6 3AF: not on the flood risk listSL6 3AG: not on the flood risk listSL6 3AH: not on the flood risk listSL6 3AJ: not on the flood risk listSL6 3AL: not on the flood risk listSL6 3AN: not on the flood risk listSL6 3AP: not on the flood risk listSL6 3AQ: not on the flood risk listSL6 3AR: not on the flood risk listSL6 3AS: not on the flood risk listSL6 3AT: not on the flood risk listSL6 3AU: not on the flood risk listSL6 3AX: not on the flood risk listSL6 3AY: not on the flood risk listSL6 3AZ: not on the flood risk listSL6 3BA: not on the flood risk listSL6 3BB: not on the flood risk listSL6 3BD: not on the flood risk listSL6 3BE: not on the flood risk listSL6 3BF: not on the flood risk listSL6 3BG: not on the flood risk listSL6 3BH: not on the flood risk listSL6 3BJ: not on the flood risk listSL6 3BL: not on the flood risk listSL6 3BP: not on the flood risk listSL6 3BQ: not on the flood risk listSL6 3BR: not on the flood risk listSL6 3BS: not on the flood risk listSL6 3BT: not on the flood risk listSL6 3BZ: not on the flood risk listSL6 3DA: not on the flood risk listSL6 3DB: not on the flood risk listSL6 3DD: not on the flood risk listSL6 3DE: not on the flood risk listSL6 3DF: not on the flood risk listSL6 3DG: not on the flood risk listSL6 3DH: not on the flood risk listSL6 3DJ: not on the flood risk listSL6 3DL: not on the flood risk listSL6 3DN: not on the flood risk listSL6 3DP: not on the flood risk listSL6 3DQ: not on the flood risk listSL6 3DR: not on the flood risk listSL6 3DS: not on the flood risk listSL6 3DT: not on the flood risk listSL6 3DU: not on the flood risk listSL6 3DW: not on the flood risk listSL6 3DX: not on the flood risk listSL6 3EA: not on the flood risk listSL6 3EB: not on the flood risk listSL6 3ED: not on the flood risk listSL6 3EE: not on the flood risk listSL6 3EF: not on the flood risk listSL6 3EG: not on the flood risk listSL6 3EH: not on the flood risk listSL6 3EL: not on the flood risk listSL6 3EN: not on the flood risk listSL6 3EP: not on the flood risk listSL6 3EQ: not on the flood risk listSL6 3ER: not on the flood risk listSL6 3ES: not on the flood risk listSL6 3ET: not on the flood risk listSL6 3EU: not on the flood risk listSL6 3EW: not on the flood risk listSL6 3EX: not on the flood risk listSL6 3EY: not on the flood risk listSL6 3EZ: not on the flood risk listSL6 3FD: not on the flood risk listSL6 3FG: not on the flood risk listSL6 3FQ: not on the flood risk listSL6 3FY: not on the flood risk listSL6 3GN: not on the flood risk listSL6 3GQ: not on the flood risk listSL6 3GW: not on the flood risk listSL6 3HD: not on the flood risk listSL6 3HE: not on the flood risk listSL6 3HG: not on the flood risk listSL6 3HH: not on the flood risk listSL6 3HJ: not on the flood risk listSL6 3HL: not on the flood risk listSL6 3HN: not on the flood risk listSL6 3HP: not on the flood risk listSL6 3HQ: not on the flood risk listSL6 3HR: not on the flood risk listSL6 3HS: not on the flood risk listSL6 3HT: not on the flood risk listSL6 3HU: not on the flood risk listSL6 3HW: not on the flood risk listSL6 3HZ: not on the flood risk listSL6 3JA: not on the flood risk listSL6 3JB: not on the flood risk listSL6 3JD: not on the flood risk listSL6 3JE: not on the flood risk listSL6 3JF: not on the flood risk listSL6 3JH: not on the flood risk listSL6 3JL: not on the flood risk listSL6 3JN: not on the flood risk listSL6 3JQ: not on the flood risk listSL6 3JS: not on the flood risk listSL6 3JT: not on the flood risk listSL6 3JU: not on the flood risk listSL6 3JW: not on the flood risk listSL6 3JX: not on the flood risk listSL6 3JY: not on the flood risk listSL6 3JZ: not on the flood risk listSL6 3LA: not on the flood risk listSL6 3LD: not on the flood risk listSL6 3LE: not on the flood risk listSL6 3LF: not on the flood risk listSL6 3LG: not on the flood risk listSL6 3LJ: not on the flood risk listSL6 3LL: not on the flood risk listSL6 3LP: not on the flood risk listSL6 3LR: not on the flood risk listSL6 3LS: not on the flood risk listSL6 3LU: not on the flood risk listSL6 3LY: not on the flood risk listSL6 3LZ: not on the flood risk listSL6 3NA: not on the flood risk listSL6 3NB: not on the flood risk listSL6 3ND: not on the flood risk listSL6 3NE: not on the flood risk listSL6 3NF: not on the flood risk listSL6 3NG: not on the flood risk listSL6 3NH: not on the flood risk listSL6 3NJ: not on the flood risk listSL6 3NL: not on the flood risk listSL6 3NN: not on the flood risk listSL6 3NP: not on the flood risk listSL6 3NQ: not on the flood risk listSL6 3NR: not on the flood risk listSL6 3NS: not on the flood risk listSL6 3NT: not on the flood risk listSL6 3NU: not on the flood risk listSL6 3NW: not on the flood risk listSL6 3NX: not on the flood risk listSL6 3NY: not on the flood risk listSL6 3NZ: not on the flood risk listSL6 3PA: not on the flood risk listSL6 3PE: not on the flood risk listSL6 3PF: not on the flood risk listSL6 3PG: not on the flood risk listSL6 3PH: not on the flood risk listSL6 3PJ: not on the flood risk listSL6 3PL: not on the flood risk listSL6 3PN: not on the flood risk listSL6 3PP: not on the flood risk listSL6 3PQ: not on the flood risk listSL6 3PR: not on the flood risk listSL6 3PS: not on the flood risk listSL6 3PT: not on the flood risk listSL6 3PU: not on the flood risk listSL6 3PW: not on the flood risk listSL6 3PX: not on the flood risk listSL6 3PY: not on the flood risk listSL6 3PZ: not on the flood risk listSL6 3QA: not on the flood risk listSL6 3QD: not on the flood risk listSL6 3QE: not on the flood risk listSL6 3QF: not on the flood risk listSL6 3QG: not on the flood risk listSL6 3QH: not on the flood risk listSL6 3QJ: not on the flood risk listSL6 3QL: not on the flood risk listSL6 3QP: not on the flood risk listSL6 3QQ: not on the flood risk listSL6 3QR: not on the flood risk listSL6 3QS: not on the flood risk listSL6 3QT: not on the flood risk listSL6 3QU: not on the flood risk listSL6 3QW: not on the flood risk listSL6 3QX: not on the flood risk listSL6 3QY: not on the flood risk listSL6 3QZ: not on the flood risk listSL6 3RA: not on the flood risk listSL6 3RE: not on the flood risk listSL6 3RF: not on the flood risk listSL6 3RG: not on the flood risk listSL6 3RH: not on the flood risk listSL6 3RQ: not on the flood risk listSL6 3RT: not on the flood risk listSL6 3RU: not on the flood risk listSL6 3RX: not on the flood risk listSL6 3RY: not on the flood risk listSL6 3RZ: not on the flood risk listSL6 3SA: not on the flood risk listSL6 3SB: not on the flood risk listSL6 3SD: not on the flood risk listSL6 3SE: not on the flood risk listSL6 3SG: not on the flood risk listSL6 3SH: not on the flood risk listSL6 3SJ: not on the flood risk listSL6 3SL: not on the flood risk listSL6 3SN: not on the flood risk listSL6 3SP: not on the flood risk listSL6 3SQ: not on the flood risk listSL6 3SU: not on the flood risk listSL6 3SW: not on the flood risk listSL6 3SX: not on the flood risk listSL6 3SY: not on the flood risk listSL6 3SZ: not on the flood risk listSL6 3TA: not on the flood risk listSL6 3TB: not on the flood risk listSL6 3TD: not on the flood risk listSL6 3TE: not on the flood risk listSL6 3TN: not on the flood risk listSL6 3TW: not on the flood risk listSL6 3TZ: not on the flood risk listSL6 3UA: not on the flood risk listSL6 3UD: not on the flood risk listSL6 3UG: not on the flood risk listSL6 3UN: not on the flood risk listSL6 3UP: not on the flood risk listSL6 3UR: not on the flood risk listSL6 3UT: not on the flood risk listSL6 3UU: not on the flood risk listSL6 3UW: not on the flood risk listSL6 3UX: not on the flood risk listSL6 3UY: not on the flood risk listSL6 3UZ: not on the flood risk listSL6 3XA: not on the flood risk listSL6 3XB: not on the flood risk listSL6 3XD: not on the flood risk listSL6 3XE: not on the flood risk listSL6 3XF: not on the flood risk listSL6 3XG: not on the flood risk listSL6 3XH: not on the flood risk listSL6 3XJ: not on the flood risk listSL6 3XL: not on the flood risk listSL6 3XN: not on the flood risk listSL6 3XP: not on the flood risk listSL6 3XQ: not on the flood risk listSL6 3XR: not on the flood risk listSL6 3XS: not on the flood risk listSL6 3XT: not on the flood risk listSL6 3XU: not on the flood risk listSL6 3XW: not on the flood risk listSL6 3XX: not on the flood risk listSL6 3XY: not on the flood risk listSL6 3XZ: not on the flood risk listSL6 3YE: not on the flood risk listSL6 3YN: not on the flood risk listSL6 3YW: not on the flood risk listSL6 3AB: low flood risk at worstSL6 3DZ: low flood risk at worstSL6 3EJ: low flood risk at worstSL6 3JP: low flood risk at worstSL6 3JR: low flood risk at worstSL6 3SR: low flood risk at worstSL6 3SS: low flood risk at worstSL6 3YP: low flood risk at worstSL6 3YR: low flood risk at worstSL6 3YS: low flood risk at worstSL6 3YT: low flood risk at worstSL6 3YU: low flood risk at worstSL6 3YX: low flood risk at worstSL6 3YY: low flood risk at worstSL6 3YZ: low flood risk at worstSL6 3AA: medium flood risk at worstSL6 3LQ: high flood riskSL6 3ST: high flood risk Maidenhead Map of every postcode in the SL6 3 sector, by flood risk Of the 274 postcodes in the SL6 3 sector that ONS places, 2 have a home or business at high risk, 1 are at medium risk at worst, 15 are at low risk at worst and 256 are not on the Environment Agency's at-risk list. Places named: Maidenhead. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Maidenhead
  • A home or business at high risk: 2
  • At medium risk at worst: 1
  • At low risk at worst: 15
  • At very low risk only: 0
  • Not on the at-risk list: 256

Of the 274 postcodes in the SL6 3 sector that ONS places, 2 have a home or business at high risk, 1 are at medium risk at worst, 15 are at low risk at worst and 256 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.

SL6 3ST2 at high riskSL6 3LQ1 at high risk

What do homes sell for in SL6 3?

Homes in SL6 3 sold for a typical £534,000 in the 12 months to August 2026, across 104 sales, down 7% on the 12 months before, HM Land Registry's figures show.

£534,000 typical price, the 12 months to August 2026
£574,500 12 months to August 2025
▼ down 7% on the 12 months before
  • Detached £772,500 38 sales
  • Semi-detached £500,000 44 sales
  • Terraced £420,000 17 sales
  • Flat or maisonette £340,000 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 SL6 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 SL6 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.

SL6 3AASL6 3ABSL6 3ADSL6 3AESL6 3AFSL6 3AGSL6 3AHSL6 3AJSL6 3ALSL6 3ANSL6 3APSL6 3AQSL6 3ARSL6 3ASSL6 3ATSL6 3AUSL6 3AWSL6 3AXSL6 3AYSL6 3AZSL6 3BASL6 3BBSL6 3BDSL6 3BESL6 3BFSL6 3BGSL6 3BHSL6 3BJSL6 3BLSL6 3BPSL6 3BQSL6 3BRSL6 3BSSL6 3BTSL6 3BUSL6 3BXSL6 3BYSL6 3BZSL6 3DASL6 3DBSL6 3DDSL6 3DESL6 3DFSL6 3DGSL6 3DHSL6 3DJSL6 3DLSL6 3DNSL6 3DPSL6 3DQSL6 3DRSL6 3DSSL6 3DTSL6 3DUSL6 3DWSL6 3DXSL6 3DYSL6 3DZSL6 3EASL6 3EBSL6 3EDSL6 3EESL6 3EFSL6 3EGSL6 3EHSL6 3EJSL6 3ELSL6 3ENSL6 3EPSL6 3EQSL6 3ERSL6 3ESSL6 3ETSL6 3EUSL6 3EWSL6 3EXSL6 3EYSL6 3EZSL6 3FDSL6 3FGSL6 3FQSL6 3FYSL6 3GNSL6 3GQSL6 3GWSL6 3HDSL6 3HESL6 3HFSL6 3HGSL6 3HHSL6 3HJSL6 3HLSL6 3HNSL6 3HPSL6 3HQSL6 3HRSL6 3HSSL6 3HTSL6 3HUSL6 3HWSL6 3HZSL6 3JASL6 3JBSL6 3JDSL6 3JESL6 3JFSL6 3JHSL6 3JLSL6 3JNSL6 3JPSL6 3JQSL6 3JRSL6 3JSSL6 3JTSL6 3JUSL6 3JWSL6 3JXSL6 3JYSL6 3JZSL6 3LASL6 3LDSL6 3LESL6 3LFSL6 3LGSL6 3LJSL6 3LLSL6 3LNSL6 3LPSL6 3LQSL6 3LRSL6 3LSSL6 3LUSL6 3LWSL6 3LYSL6 3LZSL6 3NASL6 3NBSL6 3NDSL6 3NESL6 3NFSL6 3NGSL6 3NHSL6 3NJSL6 3NLSL6 3NNSL6 3NPSL6 3NQSL6 3NRSL6 3NSSL6 3NTSL6 3NUSL6 3NWSL6 3NXSL6 3NYSL6 3NZSL6 3PASL6 3PBSL6 3PESL6 3PFSL6 3PGSL6 3PHSL6 3PJSL6 3PLSL6 3PNSL6 3PPSL6 3PQSL6 3PRSL6 3PSSL6 3PTSL6 3PUSL6 3PWSL6 3PXSL6 3PYSL6 3PZSL6 3QASL6 3QDSL6 3QESL6 3QFSL6 3QGSL6 3QHSL6 3QJSL6 3QLSL6 3QPSL6 3QQSL6 3QRSL6 3QSSL6 3QTSL6 3QUSL6 3QWSL6 3QXSL6 3QYSL6 3QZSL6 3RASL6 3RESL6 3RFSL6 3RGSL6 3RHSL6 3RQSL6 3RTSL6 3RUSL6 3RXSL6 3RYSL6 3RZSL6 3SASL6 3SBSL6 3SDSL6 3SESL6 3SGSL6 3SHSL6 3SJSL6 3SLSL6 3SNSL6 3SPSL6 3SQSL6 3SRSL6 3SSSL6 3STSL6 3SUSL6 3SWSL6 3SXSL6 3SYSL6 3SZSL6 3TASL6 3TBSL6 3TDSL6 3TESL6 3TFSL6 3TLSL6 3TNSL6 3TWSL6 3TZSL6 3UASL6 3UDSL6 3UGSL6 3UNSL6 3UPSL6 3URSL6 3UTSL6 3UUSL6 3UWSL6 3UXSL6 3UYSL6 3UZSL6 3XASL6 3XBSL6 3XDSL6 3XESL6 3XFSL6 3XGSL6 3XHSL6 3XJSL6 3XLSL6 3XNSL6 3XPSL6 3XQSL6 3XRSL6 3XSSL6 3XTSL6 3XUSL6 3XWSL6 3XXSL6 3XYSL6 3XZSL6 3YESL6 3YNSL6 3YPSL6 3YRSL6 3YSSL6 3YTSL6 3YUSL6 3YWSL6 3YXSL6 3YYSL6 3YZ

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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