SL4 1 postcode sector in the SL4 district

SL4 1 is a sector of the SL4 district: every postcode that starts SL4 1. It has 158 postcodes in use, 18 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 1 sector, and which are new since 2020

Map of every postcode in the SL4 1 sector, by new since 2020 Of the 158 postcodes in the SL4 1 sector that ONS places, 3 are new since 2020 and 155 were in use before 2020. Places named: Eton & Castle. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A308 SL4 1AA: before 2020SL4 1AF: before 2020SL4 1AG: before 2020SL4 1AN: before 2020SL4 1AT: before 2020SL4 1BA: before 2020SL4 1BB: before 2020SL4 1BE: before 2020SL4 1BF: before 2020SL4 1BG: before 2020SL4 1BH: before 2020SL4 1BN: before 2020SL4 1BP: before 2020SL4 1BQ: before 2020SL4 1BY: before 2020SL4 1BZ: before 2020SL4 1DA: before 2020SL4 1DD: before 2020SL4 1DG: before 2020SL4 1DH: before 2020SL4 1DL: before 2020SL4 1DN: before 2020SL4 1DP: before 2020SL4 1DS: before 2020SL4 1DT: before 2020SL4 1DU: before 2020SL4 1DW: before 2020SL4 1EA: before 2020SL4 1ED: before 2020SL4 1EF: before 2020SL4 1EG: before 2020SL4 1EH: before 2020SL4 1EL: before 2020SL4 1EN: before 2020SL4 1EP: before 2020SL4 1ER: before 2020SL4 1ET: before 2020SL4 1EU: before 2020SL4 1EW: before 2020SL4 1GF: before 2020SL4 1HA: before 2020SL4 1HB: before 2020SL4 1HD: before 2020SL4 1HE: before 2020SL4 1HF: before 2020SL4 1HG: before 2020SL4 1HH: before 2020SL4 1HJ: before 2020SL4 1HL: before 2020SL4 1HN: before 2020SL4 1HP: before 2020SL4 1HQ: before 2020SL4 1HR: before 2020SL4 1HS: before 2020SL4 1HT: before 2020SL4 1HU: before 2020SL4 1HW: before 2020SL4 1HX: before 2020SL4 1HY: before 2020SL4 1HZ: before 2020SL4 1JA: before 2020SL4 1JB: before 2020SL4 1JD: before 2020SL4 1JE: before 2020SL4 1JF: before 2020SL4 1JG: before 2020SL4 1JH: before 2020SL4 1JJ: before 2020SL4 1JL: before 2020SL4 1JN: before 2020SL4 1JP: before 2020SL4 1JQ: before 2020SL4 1JU: before 2020SL4 1LA: before 2020SL4 1LB: before 2020SL4 1LD: before 2020SL4 1LH: before 2020SL4 1LJ: before 2020SL4 1LP: before 2020SL4 1LR: before 2020SL4 1LS: before 2020SL4 1LU: before 2020SL4 1LY: before 2020SL4 1NA: before 2020SL4 1NG: before 2020SL4 1NJ: before 2020SL4 1NQ: before 2020SL4 1PA: before 2020SL4 1PB: before 2020SL4 1PD: before 2020SL4 1PE: before 2020SL4 1PF: before 2020SL4 1PJ: before 2020SL4 1PL: before 2020SL4 1PQ: before 2020SL4 1PR: before 2020SL4 1PS: before 2020SL4 1PU: before 2020SL4 1PW: before 2020SL4 1PX: before 2020SL4 1QB: before 2020SL4 1QE: before 2020SL4 1QG: before 2020SL4 1QL: before 2020SL4 1QP: before 2020SL4 1QT: before 2020SL4 1QW: before 2020SL4 1QX: before 2020SL4 1QY: before 2020SL4 1QZ: before 2020SL4 1RB: before 2020SL4 1RD: before 2020SL4 1RF: before 2020SL4 1RH: before 2020SL4 1RL: before 2020SL4 1RQ: before 2020SL4 1RS: before 2020SL4 1RT: before 2020SL4 1RU: before 2020SL4 1RX: before 2020SL4 1RY: before 2020SL4 1RZ: before 2020SL4 1SA: before 2020SL4 1SB: before 2020SL4 1SE: before 2020SL4 1SH: before 2020SL4 1SJ: before 2020SL4 1SN: before 2020SL4 1SP: before 2020SL4 1SQ: before 2020SL4 1SR: before 2020SL4 1SS: before 2020SL4 1ST: before 2020SL4 1SU: before 2020SL4 1SX: before 2020SL4 1SY: before 2020SL4 1SZ: before 2020SL4 1TA: before 2020SL4 1TB: before 2020SL4 1TD: before 2020SL4 1TE: before 2020SL4 1TF: before 2020SL4 1TG: before 2020SL4 1TH: before 2020SL4 1TQ: before 2020SL4 1TX: before 2020SL4 1UT: before 2020SL4 1YA: before 2020SL4 1AE: before 2020SL4 1EQ: new since 2020SL4 1FA: new since 2020SL4 1QD: new since 2020 Eton & Castle Map of every postcode in the SL4 1 sector, by new since 2020 Of the 158 postcodes in the SL4 1 sector that ONS places, 3 are new since 2020 and 155 were in use before 2020. Places named: Eton & Castle. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. Eton & Castle
  • New since 2020: 3
  • In use before 2020: 155

Of the 158 postcodes in the SL4 1 sector that ONS places, 3 are new since 2020 and 155 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. Names in italics are council wards: we hold no town or village names here.

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 3 newest postcodes

SL4 1QDMay 2026SL4 1FAJuly 2023SL4 1EQDecember 2021

What do homes sell for in SL4 1?

Homes in SL4 1 sold for a typical £468,000 in the 12 months to August 2026, across 35 sales, down 10.4% on the 12 months before, HM Land Registry's figures show.

£468,000 typical price, the 12 months to August 2026
£522,100 12 months to August 2025
▼ down 10.4% on the 12 months before
  • Detached 2 sales, too few to price
  • Semi-detached 4 sales, too few to price
  • Terraced £617,500 14 sales
  • Flat or maisonette £310,000 15 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 1. 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 SL4 1

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 1AASL4 1AESL4 1AFSL4 1AGSL4 1ANSL4 1ATSL4 1BASL4 1BBSL4 1BESL4 1BFSL4 1BGSL4 1BHSL4 1BNSL4 1BPSL4 1BQSL4 1BYSL4 1BZSL4 1DASL4 1DDSL4 1DESL4 1DGSL4 1DHSL4 1DLSL4 1DNSL4 1DPSL4 1DSSL4 1DTSL4 1DUSL4 1DWSL4 1EASL4 1EDSL4 1EFSL4 1EGSL4 1EHSL4 1ELSL4 1ENSL4 1EPSL4 1EQSL4 1ERSL4 1ETSL4 1EUSL4 1EWSL4 1FASL4 1GFSL4 1GTSL4 1HASL4 1HBSL4 1HDSL4 1HESL4 1HFSL4 1HGSL4 1HHSL4 1HJSL4 1HLSL4 1HNSL4 1HPSL4 1HQSL4 1HRSL4 1HSSL4 1HTSL4 1HUSL4 1HWSL4 1HXSL4 1HYSL4 1HZSL4 1JASL4 1JBSL4 1JDSL4 1JESL4 1JFSL4 1JGSL4 1JHSL4 1JJSL4 1JLSL4 1JNSL4 1JPSL4 1JQSL4 1JUSL4 1LASL4 1LBSL4 1LDSL4 1LHSL4 1LJSL4 1LPSL4 1LRSL4 1LSSL4 1LUSL4 1LYSL4 1NASL4 1NGSL4 1NJSL4 1NQSL4 1PASL4 1PBSL4 1PDSL4 1PESL4 1PFSL4 1PJSL4 1PLSL4 1PQSL4 1PRSL4 1PSSL4 1PUSL4 1PWSL4 1PXSL4 1QBSL4 1QDSL4 1QESL4 1QFSL4 1QGSL4 1QLSL4 1QNSL4 1QPSL4 1QTSL4 1QWSL4 1QXSL4 1QYSL4 1QZSL4 1RBSL4 1RDSL4 1RFSL4 1RHSL4 1RLSL4 1RQSL4 1RSSL4 1RTSL4 1RUSL4 1RXSL4 1RYSL4 1RZSL4 1SASL4 1SBSL4 1SESL4 1SHSL4 1SJSL4 1SNSL4 1SPSL4 1SQSL4 1SRSL4 1SSSL4 1STSL4 1SUSL4 1SXSL4 1SYSL4 1SZSL4 1TASL4 1TBSL4 1TDSL4 1TESL4 1TFSL4 1TGSL4 1THSL4 1TQSL4 1TXSL4 1UTSL4 1WZSL4 1YASL4 1ZN

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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