Template:Attached KML/SL postcode area
KML is from Wikidata
SL is located in the United Kingdom
Coordinates: 51°30′58″N 0°38′38″W / 51.516°N 0.644°W / 51.516; -0.644
CountryUnited Kingdom
Postcode area
Postcode area name
Post towns8
Postcode districts12
Postcode sectors58
Postcodes (live)10,583
Postcodes (total)16,620
Statistics as at May 2020[1]

The SL postcode area, also known as the Slough postcode area,[2] is a group of ten postcode districts in South East England, within eight post towns. These cover east Berkshire (including Slough, Maidenhead, Windsor and Ascot) and south Buckinghamshire (including Iver, Gerrards Cross, Marlow and Bourne End), plus a very small part of south-west Hertfordshire.

Mail for this area is sorted in Greenford (Green Park Way).


The approximate coverage of the postcode districts:

Postcode district Post town Coverage Local authority area(s)
SL0 IVER Iver, Iver Heath, Richings Park, Thorney Buckinghamshire
SL1 SLOUGH Slough, Burnham, Cippenham, Farnham Royal, Stoke Poges, Littleworth, Farnham Common Slough, Buckinghamshire
SL2 SLOUGH Britwell, Farnham Common, Farnham Royal, Stoke Poges, Egypt, Hedgerley Slough, Buckinghamshire
SL3 SLOUGH Langley, Datchet, Colnbrook, Poyle, Horton, Fulmer, George Green, Wexham, part of Richings Park Slough, Buckinghamshire, Windsor and Maidenhead
SL4 WINDSOR Water Oakley, Windsor, Old Windsor, Eton, Eton Wick, Clewer, Dedworth, Cranbourne, Winkfield, Dorney, Spital, Oakley Green, Woodside, Boveney, Fifield (east) Windsor and Maidenhead, Bracknell Forest, Buckinghamshire, Slough
SL5 ASCOT Ascot, Sunninghill, Sunningdale, North Ascot, South Ascot, Burleigh, Cheapside Windsor and Maidenhead, Bracknell Forest
SL6 MAIDENHEAD Maidenhead, Taplow, parts of Cippenham Slough, Bray, Braywick, Cookham, Cookham Dean, Cookham Rise, White Waltham, Hurley, Hurley Bottom, Holyport, Pinkneys Green, Woodlands Park, Furze Platt, Hitcham, Littlewick Green, Burchett's Green, Paley Street, Stud Green, Touchen End, Fifield (west) Windsor and Maidenhead, Buckinghamshire
SL7 MARLOW Marlow, Marlow Bottom, Little Marlow, Medmenham, Bisham, Lower Woodend Buckinghamshire, Windsor and Maidenhead
SL8 BOURNE END Bourne End, Well End Buckinghamshire
SL9 GERRARDS CROSS Gerrards Cross, Chalfont St Peter, Chalfont Common, Horn Hill, Tatling End (west) Buckinghamshire, Three Rivers
SL60 SLOUGH Jobcentre Plus non-geographic
SL95 SLOUGH Royal Mail non-geographic

WM postcode area

In 2008, a group of residents in the Royal Borough of Windsor and Maidenhead campaigned to have Windsor and Maidenhead's SL postcodes replaced with WM postcodes, claiming the association with Slough affected the towns' statuses as "desirable places to live". Royal Mail later stated that the campaign would be "unlikely to succeed".[3]


Template:Attached KML/SL postcode area
KML is from Wikidata
SL postcode area map, showing postcode districts, post towns and neighbouring postcode areas.GU postcode areaHA postcode areaHP postcode areaKT postcode areaRG postcode areaTW postcode areaUB postcode areaWD postcode area
SL postcode area map, showing postcode districts in red and post towns in grey text, with links to nearby GU, HP, KT, RG, TW, UB and WD postcode areas.

See also


  1. ^ "ONS Postcode Directory Version Notes" (ZIP). National Statistics Postcode Products. Office for National Statistics. May 2020. Table 2. Retrieved 19 June 2020. Coordinates from mean of unit postcode points, "Code-Point Open". OS OpenData. Ordnance Survey. February 2012. Retrieved 21 April 2012.
  2. ^ Royal Mail, Address Management Guide, (2004)
  3. ^ "Windsor war over a Slough postcode". Daily Telegraph. 26 January 2008. Retrieved 9 April 2018.