GU20 postcode district: Windlesham and around

GU20 is a postcode district mostly in Surrey, with 159 postcodes in use in 2 sectors. It has postcodes in Windlesham, Woking and Ascot and Sunningdale. It is split between 3 councils: Surrey Heath (146 postcodes), Woking (12) and Bracknell Forest (1). 158 are in Surrey. ONS lists no county for the other 1.

Postcodes in use
159
Sectors
2
Councils
3 councils
Places
3 places

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in GU20, and which are new since 2020

Map of every postcode in GU20, by new since 2020 Of the 159 postcodes in GU20 that ONS places, 19 are new since 2020 and 140 were in use before 2020. 2 groups of new postcodes are outlined: 12 new postcodes since 2020; 5 new postcodes since 2020. Places named: Windlesham, West End and Chobham, Lightwater, Bisley. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A319M3A3046A320 GU20 6AA: before 2020GU20 6AB: before 2020GU20 6AD: before 2020GU20 6AE: before 2020GU20 6AF: before 2020GU20 6AH: before 2020GU20 6AJ: before 2020GU20 6AN: before 2020GU20 6AP: before 2020GU20 6AQ: before 2020GU20 6AR: before 2020GU20 6AS: before 2020GU20 6AT: before 2020GU20 6AW: before 2020GU20 6BH: before 2020GU20 6BJ: before 2020GU20 6BL: before 2020GU20 6BN: before 2020GU20 6BP: before 2020GU20 6BS: before 2020GU20 6BT: before 2020GU20 6BU: before 2020GU20 6BW: before 2020GU20 6BX: before 2020GU20 6BY: before 2020GU20 6BZ: before 2020GU20 6DA: before 2020GU20 6DB: before 2020GU20 6DD: before 2020GU20 6DE: before 2020GU20 6DG: before 2020GU20 6DH: before 2020GU20 6DJ: before 2020GU20 6DL: before 2020GU20 6DN: before 2020GU20 6DP: before 2020GU20 6DQ: before 2020GU20 6DS: before 2020GU20 6DT: before 2020GU20 6DU: before 2020GU20 6DW: before 2020GU20 6DX: before 2020GU20 6DY: before 2020GU20 6EA: before 2020GU20 6ED: before 2020GU20 6EN: before 2020GU20 6EP: before 2020GU20 6ET: before 2020GU20 6EW: before 2020GU20 6EX: before 2020GU20 6EY: before 2020GU20 6EZ: before 2020GU20 6HB: before 2020GU20 6HD: before 2020GU20 6HE: before 2020GU20 6HP: before 2020GU20 6HR: before 2020GU20 6HS: before 2020GU20 6HT: before 2020GU20 6HU: before 2020GU20 6HX: before 2020GU20 6HY: before 2020GU20 6HZ: before 2020GU20 6JA: before 2020GU20 6JB: before 2020GU20 6JD: before 2020GU20 6JE: before 2020GU20 6JF: before 2020GU20 6JJ: before 2020GU20 6JL: before 2020GU20 6JN: before 2020GU20 6JP: before 2020GU20 6JQ: before 2020GU20 6JR: before 2020GU20 6JS: before 2020GU20 6JT: before 2020GU20 6JU: before 2020GU20 6JW: before 2020GU20 6JX: before 2020GU20 6JY: before 2020GU20 6JZ: before 2020GU20 6LA: before 2020GU20 6LE: before 2020GU20 6LF: before 2020GU20 6LG: before 2020GU20 6LH: before 2020GU20 6LJ: before 2020GU20 6LN: before 2020GU20 6LP: before 2020GU20 6LQ: before 2020GU20 6LR: before 2020GU20 6LS: before 2020GU20 6LT: before 2020GU20 6LU: before 2020GU20 6LW: before 2020GU20 6LX: before 2020GU20 6NA: before 2020GU20 6NB: before 2020GU20 6NE: before 2020GU20 6NF: before 2020GU20 6NG: before 2020GU20 6NQ: before 2020GU20 6PA: before 2020GU20 6PB: before 2020GU20 6PD: before 2020GU20 6PE: before 2020GU20 6PF: before 2020GU20 6PG: before 2020GU20 6PJ: before 2020GU20 6PL: before 2020GU20 6PN: before 2020GU20 6PP: before 2020GU20 6PQ: before 2020GU20 6PR: before 2020GU20 6PS: before 2020GU20 6PW: before 2020GU20 6QA: before 2020GU20 6QB: before 2020GU20 6QD: before 2020GU20 6QF: before 2020GU20 6QG: before 2020GU20 6QH: before 2020GU20 6QJ: before 2020GU20 6QN: before 2020GU20 6QQ: before 2020GU20 5AH: new since 2020GU20 6BE: new since 2020GU20 6BF: new since 2020GU20 6BG: new since 2020GU20 6BQ: new since 2020GU20 6EF: new since 2020GU20 6EJ: new since 2020GU20 6WS: new since 2020 WindleshamWest End and ChobhamLightwaterBisley 12 new postcodes since 2020, outlined: this goes to GU20 5DP, the newest of them12 new postcodes since 20205 new postcodes since 2020, outlined: this goes to GU20 6EF, the newest of them5 new postcodes since 2020 Map of every postcode in GU20, by new since 2020 Of the 159 postcodes in GU20 that ONS places, 19 are new since 2020 and 140 were in use before 2020. 2 groups of new postcodes are outlined: 12 new postcodes since 2020; 5 new postcodes since 2020. Places named: Windlesham, West End and Chobham, Lightwater, Bisley. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A319M3A3046 WindleshamWest End and ChobhamLightwaterBisley 12 new postcodes since 2020, outlined: this goes to GU20 5DP, the newest of them12 new postcodes since 2020
  • New since 2020: 19
  • In use before 2020: 140
  • Outline: where 5 or more new postcodes since 2020 lie together

Of the 159 postcodes in GU20 that ONS places, 19 are new since 2020 and 140 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. A dashed outline shows where 5 or more lie within 170 metres of each other. It is not a boundary, and no boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

The middle of its postcodes: latitude 51.3648, longitude -0.6500. Open this area on OpenStreetMap

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 5 newest postcodes

GU20 6EFJuly 2026GU20 6BFApril 2026GU20 6BQApril 2026GU20 6BGMarch 2026GU20 5DPFebruary 2026

Where the new postcodes lie together

  • 12 new postcodes since 2020, outlined on the map. GU20 5DP, is the newest of them.
  • 5 new postcodes since 2020, outlined on the map. GU20 6EF, is the newest of them.

What broadband can you get in GU20?

Ofcom reports on 139 of the 159 postcodes in GU20. At 95 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit95 of 139
Postcodes where every home can get superfast125 of 139

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is GU20 at risk of flooding?

12 of the 159 postcodes in GU20 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 22 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 12 of 159 postcodes High: 21Medium: 1Low: 11

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in GU20?

Homes in GU20 sold for a typical £672,500 in the 12 months to August 2026, across 54 sales, up 1.7% on the 12 months before, HM Land Registry's figures show.

£672,500 typical price, the 12 months to August 2026
£661,000 12 months to August 2025
▲ up 1.7% on the 12 months before
  • Detached £800,000 33 sales
  • Semi-detached £567,500 16 sales
  • Terraced 4 sales, too few to price
  • Flat or maisonette 1 sale, too few to price

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

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 GU20

Pick a sector, then a postcode. A sector is the district plus the next digit.

GU20 512 postcodesGU20 6147 postcodes
UK postcode format explained

Places in GU20

Towns and villages with postcodes in GU20, and how many each has here.

Windlesham postcodes,132Woking postcodes,12Ascot and Sunningdale postcodes,2

Who covers GU20

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • Surrey Heath146
  • Woking12
  • Maidenhead1

Police force areas

  • Surrey158
  • Thames Valley1

Next to GU20

GU19 postcode district GU21 postcode district All GU districts Windlesham postcodes

"Next to" is by number: the districts before and after GU20 in the GU area.

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