SL1 5 postcode sector in the SL1 district

SL1 5 is a sector of the SL1 district: every postcode that starts SL1 5. It has 250 postcodes in use, 3 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 SL1 5 sector, and which are new since 2020

Map of every postcode in the SL1 5 sector, by new since 2020 Of the 250 postcodes in the SL1 5 sector that ONS places, 2 are new since 2020 and 248 were in use before 2020. Places named: Slough. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. M4A355 SL1 5AA: before 2020SL1 5AD: before 2020SL1 5AE: before 2020SL1 5AF: before 2020SL1 5AG: before 2020SL1 5AH: before 2020SL1 5AL: before 2020SL1 5AN: before 2020SL1 5AP: before 2020SL1 5AQ: before 2020SL1 5AW: before 2020SL1 5AX: before 2020SL1 5AZ: before 2020SL1 5BA: before 2020SL1 5BB: before 2020SL1 5BD: before 2020SL1 5BE: before 2020SL1 5BH: before 2020SL1 5BJ: before 2020SL1 5BL: before 2020SL1 5BN: before 2020SL1 5BP: before 2020SL1 5BQ: before 2020SL1 5BS: before 2020SL1 5BU: before 2020SL1 5BW: before 2020SL1 5BX: before 2020SL1 5BY: before 2020SL1 5BZ: before 2020SL1 5DA: before 2020SL1 5DB: before 2020SL1 5DD: before 2020SL1 5DE: before 2020SL1 5DF: before 2020SL1 5DG: before 2020SL1 5DH: before 2020SL1 5DJ: before 2020SL1 5DL: before 2020SL1 5DN: before 2020SL1 5DP: before 2020SL1 5DQ: before 2020SL1 5DR: before 2020SL1 5DS: before 2020SL1 5DT: before 2020SL1 5DU: before 2020SL1 5DW: before 2020SL1 5DX: before 2020SL1 5DY: before 2020SL1 5DZ: before 2020SL1 5EA: before 2020SL1 5EB: before 2020SL1 5ED: before 2020SL1 5EE: before 2020SL1 5EF: before 2020SL1 5EG: before 2020SL1 5EJ: before 2020SL1 5EL: before 2020SL1 5EN: before 2020SL1 5EP: before 2020SL1 5EQ: before 2020SL1 5ER: before 2020SL1 5ES: before 2020SL1 5ET: before 2020SL1 5EU: before 2020SL1 5EW: before 2020SL1 5EX: before 2020SL1 5EY: before 2020SL1 5EZ: before 2020SL1 5FA: before 2020SL1 5FB: before 2020SL1 5FD: before 2020SL1 5FE: before 2020SL1 5FF: before 2020SL1 5FG: before 2020SL1 5FH: before 2020SL1 5FJ: before 2020SL1 5FL: before 2020SL1 5FQ: before 2020SL1 5FR: before 2020SL1 5FS: before 2020SL1 5FT: before 2020SL1 5FU: before 2020SL1 5FW: before 2020SL1 5FX: before 2020SL1 5FY: before 2020SL1 5FZ: before 2020SL1 5GA: before 2020SL1 5HA: before 2020SL1 5HB: before 2020SL1 5HD: before 2020SL1 5HE: before 2020SL1 5HF: before 2020SL1 5HG: before 2020SL1 5HJ: before 2020SL1 5HL: before 2020SL1 5HN: before 2020SL1 5HP: before 2020SL1 5HQ: before 2020SL1 5HS: before 2020SL1 5HT: before 2020SL1 5HU: before 2020SL1 5HX: before 2020SL1 5HY: before 2020SL1 5HZ: before 2020SL1 5JA: before 2020SL1 5JB: before 2020SL1 5JD: before 2020SL1 5JE: before 2020SL1 5JF: before 2020SL1 5JG: before 2020SL1 5JH: before 2020SL1 5JL: before 2020SL1 5JN: before 2020SL1 5JP: before 2020SL1 5JQ: before 2020SL1 5JR: before 2020SL1 5JS: before 2020SL1 5JT: before 2020SL1 5JU: before 2020SL1 5JW: before 2020SL1 5JX: before 2020SL1 5JY: before 2020SL1 5JZ: before 2020SL1 5LA: before 2020SL1 5LB: before 2020SL1 5LD: before 2020SL1 5LE: before 2020SL1 5LF: before 2020SL1 5LG: before 2020SL1 5LH: before 2020SL1 5LJ: before 2020SL1 5LL: before 2020SL1 5LN: before 2020SL1 5LP: before 2020SL1 5LQ: before 2020SL1 5LR: before 2020SL1 5LS: before 2020SL1 5LT: before 2020SL1 5LU: before 2020SL1 5LW: before 2020SL1 5LX: before 2020SL1 5LY: before 2020SL1 5LZ: before 2020SL1 5NA: before 2020SL1 5NB: before 2020SL1 5ND: before 2020SL1 5NE: before 2020SL1 5NF: before 2020SL1 5NG: before 2020SL1 5NH: before 2020SL1 5NJ: before 2020SL1 5NL: before 2020SL1 5NN: before 2020SL1 5NP: before 2020SL1 5NQ: before 2020SL1 5NR: before 2020SL1 5NT: before 2020SL1 5NU: before 2020SL1 5NW: before 2020SL1 5NX: before 2020SL1 5PA: before 2020SL1 5PB: before 2020SL1 5PD: before 2020SL1 5PE: before 2020SL1 5PF: before 2020SL1 5PG: before 2020SL1 5PH: before 2020SL1 5PJ: before 2020SL1 5PL: before 2020SL1 5PP: before 2020SL1 5PQ: before 2020SL1 5PR: before 2020SL1 5PS: before 2020SL1 5QA: before 2020SL1 5QE: before 2020SL1 5QF: before 2020SL1 5QG: before 2020SL1 5QJ: before 2020SL1 5QL: before 2020SL1 5QS: before 2020SL1 5QT: before 2020SL1 5QU: before 2020SL1 5QW: before 2020SL1 5QX: before 2020SL1 5QY: before 2020SL1 5QZ: before 2020SL1 5RA: before 2020SL1 5RB: before 2020SL1 5RD: before 2020SL1 5RE: before 2020SL1 5RF: before 2020SL1 5RG: before 2020SL1 5RQ: before 2020SL1 5SN: before 2020SL1 5SP: before 2020SL1 5SR: before 2020SL1 5ST: before 2020SL1 5SU: before 2020SL1 5SW: before 2020SL1 5SX: before 2020SL1 5SY: before 2020SL1 5SZ: before 2020SL1 5TD: before 2020SL1 5TE: before 2020SL1 5TF: before 2020SL1 5TG: before 2020SL1 5TH: before 2020SL1 5TL: before 2020SL1 5TN: before 2020SL1 5TP: before 2020SL1 5TQ: before 2020SL1 5TR: before 2020SL1 5TS: before 2020SL1 5TT: before 2020SL1 5TU: before 2020SL1 5TW: before 2020SL1 5TX: before 2020SL1 5TY: before 2020SL1 5TZ: before 2020SL1 5UA: before 2020SL1 5UB: before 2020SL1 5UD: before 2020SL1 5UE: before 2020SL1 5UF: before 2020SL1 5UG: before 2020SL1 5UH: before 2020SL1 5UJ: before 2020SL1 5UL: before 2020SL1 5UN: before 2020SL1 5UQ: before 2020SL1 5UR: before 2020SL1 5US: before 2020SL1 5UT: before 2020SL1 5UU: before 2020SL1 5UX: before 2020SL1 5TA: before 2020SL1 5UP: before 2020SL1 5GB: new since 2020SL1 5ZN: new since 2020 Slough Map of every postcode in the SL1 5 sector, by new since 2020 Of the 250 postcodes in the SL1 5 sector that ONS places, 2 are new since 2020 and 248 were in use before 2020. Places named: Slough. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A355M4A332 Slough
  • New since 2020: 2
  • In use before 2020: 248

Of the 250 postcodes in the SL1 5 sector that ONS places, 2 are new since 2020 and 248 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 2 newest postcodes

SL1 5ZNMarch 2026SL1 5GBSeptember 2021

What do homes sell for in SL1 5?

Homes in SL1 5 sold for a typical £412,500 in the 12 months to August 2026, across 101 sales, down 1.8% on the 12 months before, HM Land Registry's figures show.

£412,500 typical price, the 12 months to August 2026
£420,000 12 months to August 2025
▼ down 1.8% on the 12 months before
  • Detached £505,000 12 sales
  • Semi-detached £436,975 34 sales
  • Terraced £402,000 41 sales
  • Flat or maisonette £197,000 14 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 SL1 5. 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 SL1 5

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.

SL1 5AASL1 5ADSL1 5AESL1 5AFSL1 5AGSL1 5AHSL1 5ALSL1 5ANSL1 5APSL1 5AQSL1 5ASSL1 5AWSL1 5AXSL1 5AYSL1 5AZSL1 5BASL1 5BBSL1 5BDSL1 5BESL1 5BHSL1 5BJSL1 5BLSL1 5BNSL1 5BPSL1 5BQSL1 5BSSL1 5BUSL1 5BWSL1 5BXSL1 5BYSL1 5BZSL1 5DASL1 5DBSL1 5DDSL1 5DESL1 5DFSL1 5DGSL1 5DHSL1 5DJSL1 5DLSL1 5DNSL1 5DPSL1 5DQSL1 5DRSL1 5DSSL1 5DTSL1 5DUSL1 5DWSL1 5DXSL1 5DYSL1 5DZSL1 5EASL1 5EBSL1 5EDSL1 5EESL1 5EFSL1 5EGSL1 5EJSL1 5ELSL1 5ENSL1 5EPSL1 5EQSL1 5ERSL1 5ESSL1 5ETSL1 5EUSL1 5EWSL1 5EXSL1 5EYSL1 5EZSL1 5FASL1 5FBSL1 5FDSL1 5FESL1 5FFSL1 5FGSL1 5FHSL1 5FJSL1 5FLSL1 5FNSL1 5FPSL1 5FQSL1 5FRSL1 5FSSL1 5FTSL1 5FUSL1 5FWSL1 5FXSL1 5FYSL1 5FZSL1 5GASL1 5GBSL1 5HASL1 5HBSL1 5HDSL1 5HESL1 5HFSL1 5HGSL1 5HJSL1 5HLSL1 5HNSL1 5HPSL1 5HQSL1 5HSSL1 5HTSL1 5HUSL1 5HWSL1 5HXSL1 5HYSL1 5HZSL1 5JASL1 5JBSL1 5JDSL1 5JESL1 5JFSL1 5JGSL1 5JHSL1 5JLSL1 5JNSL1 5JPSL1 5JQSL1 5JRSL1 5JSSL1 5JTSL1 5JUSL1 5JWSL1 5JXSL1 5JYSL1 5JZSL1 5LASL1 5LBSL1 5LDSL1 5LESL1 5LFSL1 5LGSL1 5LHSL1 5LJSL1 5LLSL1 5LNSL1 5LPSL1 5LQSL1 5LRSL1 5LSSL1 5LTSL1 5LUSL1 5LWSL1 5LXSL1 5LYSL1 5LZSL1 5NASL1 5NBSL1 5NDSL1 5NESL1 5NFSL1 5NGSL1 5NHSL1 5NJSL1 5NLSL1 5NNSL1 5NPSL1 5NQSL1 5NRSL1 5NSSL1 5NTSL1 5NUSL1 5NWSL1 5NXSL1 5NYSL1 5PASL1 5PBSL1 5PDSL1 5PESL1 5PFSL1 5PGSL1 5PHSL1 5PJSL1 5PLSL1 5PPSL1 5PQSL1 5PRSL1 5PSSL1 5PZSL1 5QASL1 5QESL1 5QFSL1 5QGSL1 5QJSL1 5QLSL1 5QSSL1 5QTSL1 5QUSL1 5QWSL1 5QXSL1 5QYSL1 5QZSL1 5RASL1 5RBSL1 5RDSL1 5RESL1 5RFSL1 5RGSL1 5RQSL1 5SNSL1 5SPSL1 5SRSL1 5STSL1 5SUSL1 5SWSL1 5SXSL1 5SYSL1 5SZSL1 5TASL1 5TBSL1 5TDSL1 5TESL1 5TFSL1 5TGSL1 5THSL1 5TJSL1 5TLSL1 5TNSL1 5TPSL1 5TQSL1 5TRSL1 5TSSL1 5TTSL1 5TUSL1 5TWSL1 5TXSL1 5TYSL1 5TZSL1 5UASL1 5UBSL1 5UDSL1 5UESL1 5UFSL1 5UGSL1 5UHSL1 5UJSL1 5ULSL1 5UNSL1 5UPSL1 5UQSL1 5URSL1 5USSL1 5UTSL1 5UUSL1 5UWSL1 5UXSL1 5ZN

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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