SL3 9 postcode sector in the SL3 district

SL3 9 is a sector of the SL3 district: every postcode that starts SL3 9. It has 171 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 SL3 9 sector, and which are new since 2020

Map of every postcode in the SL3 9 sector, by new since 2020 Of the 171 postcodes in the SL3 9 sector that ONS places, 1 are new since 2020 and 170 were in use before 2020. Places named: Datchet. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. M4 SL3 9AA: before 2020SL3 9AB: before 2020SL3 9AD: before 2020SL3 9AE: before 2020SL3 9AF: before 2020SL3 9AG: before 2020SL3 9AH: before 2020SL3 9AL: before 2020SL3 9AN: before 2020SL3 9AP: before 2020SL3 9AQ: before 2020SL3 9AR: before 2020SL3 9AS: before 2020SL3 9AU: before 2020SL3 9AW: before 2020SL3 9AX: before 2020SL3 9AY: before 2020SL3 9AZ: before 2020SL3 9BA: before 2020SL3 9BB: before 2020SL3 9BE: before 2020SL3 9BG: before 2020SL3 9BJ: before 2020SL3 9BN: before 2020SL3 9BP: before 2020SL3 9BQ: before 2020SL3 9BR: before 2020SL3 9BS: before 2020SL3 9BT: before 2020SL3 9BU: before 2020SL3 9BW: before 2020SL3 9BX: before 2020SL3 9BY: before 2020SL3 9BZ: before 2020SL3 9DA: before 2020SL3 9DB: before 2020SL3 9DD: before 2020SL3 9DE: before 2020SL3 9DH: before 2020SL3 9DJ: before 2020SL3 9DL: before 2020SL3 9DN: before 2020SL3 9DQ: before 2020SL3 9DR: before 2020SL3 9DS: before 2020SL3 9DT: before 2020SL3 9DU: before 2020SL3 9DW: before 2020SL3 9DX: before 2020SL3 9DY: before 2020SL3 9EA: before 2020SL3 9EB: before 2020SL3 9ED: before 2020SL3 9EE: before 2020SL3 9EG: before 2020SL3 9EH: before 2020SL3 9EJ: before 2020SL3 9EN: before 2020SL3 9EP: before 2020SL3 9EQ: before 2020SL3 9ER: before 2020SL3 9EU: before 2020SL3 9EW: before 2020SL3 9EX: before 2020SL3 9EY: before 2020SL3 9EZ: before 2020SL3 9FA: before 2020SL3 9FB: before 2020SL3 9GL: before 2020SL3 9HA: before 2020SL3 9HB: before 2020SL3 9HD: before 2020SL3 9HE: before 2020SL3 9HG: before 2020SL3 9HH: before 2020SL3 9HJ: before 2020SL3 9HL: before 2020SL3 9HN: before 2020SL3 9HP: before 2020SL3 9HQ: before 2020SL3 9HR: before 2020SL3 9HS: before 2020SL3 9HT: before 2020SL3 9HU: before 2020SL3 9HW: before 2020SL3 9HX: before 2020SL3 9HY: before 2020SL3 9HZ: before 2020SL3 9JA: before 2020SL3 9JB: before 2020SL3 9JD: before 2020SL3 9JE: before 2020SL3 9JF: before 2020SL3 9JH: before 2020SL3 9JJ: before 2020SL3 9JL: before 2020SL3 9JN: before 2020SL3 9JP: before 2020SL3 9JQ: before 2020SL3 9JR: before 2020SL3 9JS: before 2020SL3 9JT: before 2020SL3 9JW: before 2020SL3 9JY: before 2020SL3 9JZ: before 2020SL3 9LA: before 2020SL3 9LB: before 2020SL3 9LD: before 2020SL3 9LH: before 2020SL3 9LQ: before 2020SL3 9LR: before 2020SL3 9LS: before 2020SL3 9LT: before 2020SL3 9LU: before 2020SL3 9LX: before 2020SL3 9LY: before 2020SL3 9LZ: before 2020SL3 9NA: before 2020SL3 9NB: before 2020SL3 9ND: before 2020SL3 9NE: before 2020SL3 9NF: before 2020SL3 9NG: before 2020SL3 9NH: before 2020SL3 9NJ: before 2020SL3 9NP: before 2020SL3 9NQ: before 2020SL3 9NR: before 2020SL3 9NS: before 2020SL3 9NT: before 2020SL3 9NU: before 2020SL3 9NX: before 2020SL3 9NY: before 2020SL3 9PA: before 2020SL3 9PB: before 2020SL3 9PD: before 2020SL3 9PE: before 2020SL3 9PF: before 2020SL3 9PG: before 2020SL3 9PH: before 2020SL3 9PJ: before 2020SL3 9PL: before 2020SL3 9PN: before 2020SL3 9PP: before 2020SL3 9PQ: before 2020SL3 9PR: before 2020SL3 9PS: before 2020SL3 9PT: before 2020SL3 9PU: before 2020SL3 9PW: before 2020SL3 9PX: before 2020SL3 9PY: before 2020SL3 9QA: before 2020SL3 9QB: before 2020SL3 9QD: before 2020SL3 9QR: before 2020SL3 9QT: before 2020SL3 9QU: before 2020SL3 9QX: before 2020SL3 9QY: before 2020SL3 9QZ: before 2020SL3 9RA: before 2020SL3 9RB: before 2020SL3 9ZH: before 2020SL3 9LL: new since 2020 Datchet Map of every postcode in the SL3 9 sector, by new since 2020 Of the 171 postcodes in the SL3 9 sector that ONS places, 1 are new since 2020 and 170 were in use before 2020. Places named: Datchet. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A4 Datchet
  • New since 2020: 1
  • In use before 2020: 170

Of the 171 postcodes in the SL3 9 sector that ONS places, 1 are new since 2020 and 170 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. 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; when each came into use: the same directory; 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 newest postcode

SL3 9LLApril 2020

What do homes sell for in SL3 9?

Homes in SL3 9 sold for a typical £480,000 in the 12 months to August 2026, across 44 sales, down 11.5% on the 12 months before, HM Land Registry's figures show.

£480,000 typical price, the 12 months to August 2026
£542,500 12 months to August 2025
▼ down 11.5% on the 12 months before
  • Detached £793,750 10 sales
  • Semi-detached £530,000 11 sales
  • Terraced £415,000 13 sales
  • Flat or maisonette £255,000 10 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 SL3 9. 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 SL3 9

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.

SL3 9AASL3 9ABSL3 9ADSL3 9AESL3 9AFSL3 9AGSL3 9AHSL3 9ALSL3 9ANSL3 9APSL3 9AQSL3 9ARSL3 9ASSL3 9ATSL3 9AUSL3 9AWSL3 9AXSL3 9AYSL3 9AZSL3 9BASL3 9BBSL3 9BESL3 9BGSL3 9BJSL3 9BLSL3 9BNSL3 9BPSL3 9BQSL3 9BRSL3 9BSSL3 9BTSL3 9BUSL3 9BWSL3 9BXSL3 9BYSL3 9BZSL3 9DASL3 9DBSL3 9DDSL3 9DESL3 9DHSL3 9DJSL3 9DLSL3 9DNSL3 9DQSL3 9DRSL3 9DSSL3 9DTSL3 9DUSL3 9DWSL3 9DXSL3 9DYSL3 9EASL3 9EBSL3 9EDSL3 9EESL3 9EGSL3 9EHSL3 9EJSL3 9ELSL3 9ENSL3 9EPSL3 9EQSL3 9ERSL3 9EUSL3 9EWSL3 9EXSL3 9EYSL3 9EZSL3 9FASL3 9FBSL3 9GLSL3 9HASL3 9HBSL3 9HDSL3 9HESL3 9HGSL3 9HHSL3 9HJSL3 9HLSL3 9HNSL3 9HPSL3 9HQSL3 9HRSL3 9HSSL3 9HTSL3 9HUSL3 9HWSL3 9HXSL3 9HYSL3 9HZSL3 9JASL3 9JBSL3 9JDSL3 9JESL3 9JFSL3 9JHSL3 9JJSL3 9JLSL3 9JNSL3 9JPSL3 9JQSL3 9JRSL3 9JSSL3 9JTSL3 9JUSL3 9JWSL3 9JYSL3 9JZSL3 9LASL3 9LBSL3 9LDSL3 9LHSL3 9LJSL3 9LLSL3 9LQSL3 9LRSL3 9LSSL3 9LTSL3 9LUSL3 9LXSL3 9LYSL3 9LZSL3 9NASL3 9NBSL3 9NDSL3 9NESL3 9NFSL3 9NGSL3 9NHSL3 9NJSL3 9NPSL3 9NQSL3 9NRSL3 9NSSL3 9NTSL3 9NUSL3 9NXSL3 9NYSL3 9NZSL3 9PASL3 9PBSL3 9PDSL3 9PESL3 9PFSL3 9PGSL3 9PHSL3 9PJSL3 9PLSL3 9PNSL3 9PPSL3 9PQSL3 9PRSL3 9PSSL3 9PTSL3 9PUSL3 9PWSL3 9PXSL3 9PYSL3 9QASL3 9QBSL3 9QDSL3 9QRSL3 9QTSL3 9QUSL3 9QXSL3 9QYSL3 9QZSL3 9RASL3 9RBSL3 9ZH

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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