SL1 9 postcode sector in the SL1 district

SL1 9 is a sector of the SL1 district: every postcode that starts SL1 9. It has 57 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 SL1 9 sector, and which are new since 2020

Map of every postcode in the SL1 9 sector, by new since 2020 Of the 57 postcodes in the SL1 9 sector that ONS places, 57 were in use before 2020. Places named: Cippenham Manor. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. M4 SL1 9AA: before 2020SL1 9AB: before 2020SL1 9AD: before 2020SL1 9AF: before 2020SL1 9AG: before 2020SL1 9AH: before 2020SL1 9AJ: before 2020SL1 9AN: before 2020SL1 9AP: before 2020SL1 9AQ: before 2020SL1 9AR: before 2020SL1 9AS: before 2020SL1 9AT: before 2020SL1 9AW: before 2020SL1 9BA: before 2020SL1 9BB: before 2020SL1 9BD: before 2020SL1 9BE: before 2020SL1 9BG: before 2020SL1 9BH: before 2020SL1 9BJ: before 2020SL1 9BN: before 2020SL1 9BQ: before 2020SL1 9BW: before 2020SL1 9DA: before 2020SL1 9DB: before 2020SL1 9DD: before 2020SL1 9DE: before 2020SL1 9DJ: before 2020SL1 9DL: before 2020SL1 9DN: before 2020SL1 9DT: before 2020SL1 9DU: before 2020SL1 9DW: before 2020SL1 9DX: before 2020SL1 9DY: before 2020SL1 9DZ: before 2020SL1 9EA: before 2020SL1 9EB: before 2020SL1 9HA: before 2020SL1 9HB: before 2020SL1 9HD: before 2020SL1 9HE: before 2020SL1 9HJ: before 2020SL1 9HL: before 2020SL1 9HN: before 2020SL1 9HW: before 2020SL1 9JA: before 2020SL1 9JB: before 2020SL1 9JF: before 2020SL1 9JL: before 2020SL1 9JX: before 2020SL1 9JY: before 2020SL1 9JZ: before 2020SL1 9LA: before 2020SL1 9LB: before 2020SL1 9LD: before 2020 Cippenham Manor Map of every postcode in the SL1 9 sector, by new since 2020 Of the 57 postcodes in the SL1 9 sector that ONS places, 57 were in use before 2020. Places named: Cippenham Manor. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. M4 Cippenham Manor
  • New since 2020: 0
  • In use before 2020: 57

Of the 57 postcodes in the SL1 9 sector that ONS places, 57 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. 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

What do homes sell for in SL1 9?

Homes in SL1 9 sold for a typical £345,000 in the 12 months to August 2026, across 29 sales, down 2.5% on the 12 months before, HM Land Registry's figures show.

£345,000 typical price, the 12 months to August 2026
£354,000 12 months to August 2025
▼ down 2.5% on the 12 months before
  • Detached 1 sale, too few to price
  • Semi-detached £380,000 5 sales
  • Terraced £358,750 12 sales
  • Flat or maisonette £170,000 11 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 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 SL1 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.

SL1 9AASL1 9ABSL1 9ADSL1 9AFSL1 9AGSL1 9AHSL1 9AJSL1 9ANSL1 9APSL1 9AQSL1 9ARSL1 9ASSL1 9ATSL1 9AWSL1 9BASL1 9BBSL1 9BDSL1 9BESL1 9BGSL1 9BHSL1 9BJSL1 9BNSL1 9BQSL1 9BWSL1 9DASL1 9DBSL1 9DDSL1 9DESL1 9DJSL1 9DLSL1 9DNSL1 9DTSL1 9DUSL1 9DWSL1 9DXSL1 9DYSL1 9DZSL1 9EASL1 9EBSL1 9HASL1 9HBSL1 9HDSL1 9HESL1 9HJSL1 9HLSL1 9HNSL1 9HWSL1 9JASL1 9JBSL1 9JFSL1 9JLSL1 9JXSL1 9JYSL1 9JZSL1 9LASL1 9LBSL1 9LD

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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