SL2 4 postcode sector in the SL2 district

SL2 4 is a sector of the SL2 district: every postcode that starts SL2 4. It has 173 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 SL2 4 sector, and which are new since 2020

Map of every postcode in the SL2 4 sector, by new since 2020 Of the 173 postcodes in the SL2 4 sector that ONS places, 1 are new since 2020 and 172 were in use before 2020. Places named: Slough, Farnham Common and Farnham Royal, Stoke Poges. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. M40 SL2 4AA: before 2020SL2 4AB: before 2020SL2 4AD: before 2020SL2 4AE: before 2020SL2 4AF: before 2020SL2 4AG: before 2020SL2 4AH: before 2020SL2 4AJ: before 2020SL2 4AL: before 2020SL2 4AN: before 2020SL2 4AP: before 2020SL2 4AQ: before 2020SL2 4AR: before 2020SL2 4AS: before 2020SL2 4AT: before 2020SL2 4AU: before 2020SL2 4AX: before 2020SL2 4AY: before 2020SL2 4AZ: before 2020SL2 4BA: before 2020SL2 4BB: before 2020SL2 4BD: before 2020SL2 4BG: before 2020SL2 4BH: before 2020SL2 4BN: before 2020SL2 4BP: before 2020SL2 4BQ: before 2020SL2 4BS: before 2020SL2 4BT: before 2020SL2 4BU: before 2020SL2 4BW: before 2020SL2 4BX: before 2020SL2 4BY: before 2020SL2 4BZ: before 2020SL2 4DA: before 2020SL2 4DD: before 2020SL2 4DE: before 2020SL2 4DF: before 2020SL2 4DG: before 2020SL2 4DH: before 2020SL2 4DN: before 2020SL2 4DP: before 2020SL2 4DQ: before 2020SL2 4DR: before 2020SL2 4DS: before 2020SL2 4DW: before 2020SL2 4DX: before 2020SL2 4DY: before 2020SL2 4EA: before 2020SL2 4EB: before 2020SL2 4EE: before 2020SL2 4EF: before 2020SL2 4EG: before 2020SL2 4EH: before 2020SL2 4EJ: before 2020SL2 4EL: before 2020SL2 4EP: before 2020SL2 4ER: before 2020SL2 4ES: before 2020SL2 4ET: before 2020SL2 4EU: before 2020SL2 4EW: before 2020SL2 4EX: before 2020SL2 4EY: before 2020SL2 4EZ: before 2020SL2 4FA: before 2020SL2 4FB: before 2020SL2 4FE: before 2020SL2 4FF: before 2020SL2 4FH: before 2020SL2 4FJ: before 2020SL2 4FL: before 2020SL2 4FN: before 2020SL2 4FP: before 2020SL2 4FQ: before 2020SL2 4GA: before 2020SL2 4GB: before 2020SL2 4GD: before 2020SL2 4GE: before 2020SL2 4GF: before 2020SL2 4GG: before 2020SL2 4GQ: before 2020SL2 4HA: before 2020SL2 4HD: before 2020SL2 4HE: before 2020SL2 4HF: before 2020SL2 4HH: before 2020SL2 4HJ: before 2020SL2 4HL: before 2020SL2 4HN: before 2020SL2 4HP: before 2020SL2 4HQ: before 2020SL2 4HR: before 2020SL2 4HT: before 2020SL2 4HX: before 2020SL2 4HY: before 2020SL2 4HZ: before 2020SL2 4JD: before 2020SL2 4JF: before 2020SL2 4JG: before 2020SL2 4JH: before 2020SL2 4JJ: before 2020SL2 4JP: before 2020SL2 4JQ: before 2020SL2 4JR: before 2020SL2 4JS: before 2020SL2 4JT: before 2020SL2 4JW: before 2020SL2 4JX: before 2020SL2 4LD: before 2020SL2 4LE: before 2020SL2 4LF: before 2020SL2 4LG: before 2020SL2 4LH: before 2020SL2 4LJ: before 2020SL2 4LL: before 2020SL2 4LN: before 2020SL2 4LP: before 2020SL2 4LQ: before 2020SL2 4LR: before 2020SL2 4LS: before 2020SL2 4LT: before 2020SL2 4LU: before 2020SL2 4LX: before 2020SL2 4LZ: before 2020SL2 4NA: before 2020SL2 4NB: before 2020SL2 4ND: before 2020SL2 4NE: before 2020SL2 4NJ: before 2020SL2 4NL: before 2020SL2 4NN: before 2020SL2 4NP: before 2020SL2 4NT: before 2020SL2 4NU: before 2020SL2 4NZ: before 2020SL2 4PA: before 2020SL2 4PB: before 2020SL2 4PD: before 2020SL2 4PE: before 2020SL2 4PG: before 2020SL2 4PH: before 2020SL2 4PJ: before 2020SL2 4PP: before 2020SL2 4PS: before 2020SL2 4PT: before 2020SL2 4PU: before 2020SL2 4PW: before 2020SL2 4PX: before 2020SL2 4PY: before 2020SL2 4PZ: before 2020SL2 4QA: before 2020SL2 4QB: before 2020SL2 4QE: before 2020SL2 4QF: before 2020SL2 4QG: before 2020SL2 4QJ: before 2020SL2 4QL: before 2020SL2 4QN: before 2020SL2 4QR: before 2020SL2 4QS: before 2020SL2 4QT: before 2020SL2 4QU: before 2020SL2 4QX: before 2020SL2 4XJ: before 2020SL2 4FR: new since 2020 SloughFarnham Common and Farnham RoyalStoke Poges Map of every postcode in the SL2 4 sector, by new since 2020 Of the 173 postcodes in the SL2 4 sector that ONS places, 1 are new since 2020 and 172 were in use before 2020. Places named: Slough, Farnham Common and Farnham Royal, Stoke Poges. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A412M40A4 SloughFarnham Common and Farnham RoyalStoke Poges
  • New since 2020: 1
  • In use before 2020: 172

Of the 173 postcodes in the SL2 4 sector that ONS places, 1 are new since 2020 and 172 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

SL2 4FRFebruary 2023

What do homes sell for in SL2 4?

Homes in SL2 4 sold for a typical £632,500 in the 12 months to August 2026, across 60 sales, up 18.8% on the 12 months before, HM Land Registry's figures show.

£632,500 typical price, the 12 months to August 2026
£532,500 12 months to August 2025
▲ up 18.8% on the 12 months before
  • Detached £1,000,000 19 sales
  • Semi-detached £620,000 26 sales
  • Terraced 2 sales, too few to price
  • Flat or maisonette £297,500 13 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 SL2 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 SL2 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.

SL2 4AASL2 4ABSL2 4ADSL2 4AESL2 4AFSL2 4AGSL2 4AHSL2 4AJSL2 4ALSL2 4ANSL2 4APSL2 4AQSL2 4ARSL2 4ASSL2 4ATSL2 4AUSL2 4AXSL2 4AYSL2 4AZSL2 4BASL2 4BBSL2 4BDSL2 4BGSL2 4BHSL2 4BNSL2 4BPSL2 4BQSL2 4BSSL2 4BTSL2 4BUSL2 4BWSL2 4BXSL2 4BYSL2 4BZSL2 4DASL2 4DDSL2 4DESL2 4DFSL2 4DGSL2 4DHSL2 4DNSL2 4DPSL2 4DQSL2 4DRSL2 4DSSL2 4DWSL2 4DXSL2 4DYSL2 4EASL2 4EBSL2 4EESL2 4EFSL2 4EGSL2 4EHSL2 4EJSL2 4ELSL2 4EPSL2 4ERSL2 4ESSL2 4ETSL2 4EUSL2 4EWSL2 4EXSL2 4EYSL2 4EZSL2 4FASL2 4FBSL2 4FDSL2 4FESL2 4FFSL2 4FHSL2 4FJSL2 4FLSL2 4FNSL2 4FPSL2 4FQSL2 4FRSL2 4GASL2 4GBSL2 4GDSL2 4GESL2 4GFSL2 4GGSL2 4GQSL2 4HASL2 4HDSL2 4HESL2 4HFSL2 4HHSL2 4HJSL2 4HLSL2 4HNSL2 4HPSL2 4HQSL2 4HRSL2 4HTSL2 4HWSL2 4HXSL2 4HYSL2 4HZSL2 4JDSL2 4JFSL2 4JGSL2 4JHSL2 4JJSL2 4JPSL2 4JQSL2 4JRSL2 4JSSL2 4JTSL2 4JUSL2 4JWSL2 4JXSL2 4LDSL2 4LESL2 4LFSL2 4LGSL2 4LHSL2 4LJSL2 4LLSL2 4LNSL2 4LPSL2 4LQSL2 4LRSL2 4LSSL2 4LTSL2 4LUSL2 4LWSL2 4LXSL2 4LZSL2 4NASL2 4NBSL2 4NDSL2 4NESL2 4NJSL2 4NLSL2 4NNSL2 4NPSL2 4NTSL2 4NUSL2 4NZSL2 4PASL2 4PBSL2 4PDSL2 4PESL2 4PGSL2 4PHSL2 4PJSL2 4PPSL2 4PSSL2 4PTSL2 4PUSL2 4PWSL2 4PXSL2 4PYSL2 4PZSL2 4QASL2 4QBSL2 4QESL2 4QFSL2 4QGSL2 4QJSL2 4QLSL2 4QNSL2 4QRSL2 4QSSL2 4QTSL2 4QUSL2 4QXSL2 4XJSL2 4YPSL2 4YUSL2 4ZN

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.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.