Colnbrook
Colnbrook is covered by postcode district SL3. It is mostly in the Slough council area: 61 of its 62 postcodes. The other is in Windsor and Maidenhead.
Every postcode in Colnbrook, by flood risk
- A home or business at high risk: 11
- At medium risk at worst: 2
- At low risk at worst: 3
- At very low risk only: 6
- Not on the at-risk list: 40
- Outline: where 5 or more postcodes at high or medium risk lie together
Of the 62 postcodes in Colnbrook that ONS places, 11 have a home or business at high risk, 2 are at medium risk at worst, 3 are at low risk at worst, 6 are at very low risk only and 40 are not on the Environment Agency's at-risk list.
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. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and no boundary is drawn.
The middle of its postcodes: latitude 51.4838, longitude -0.5244. 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; flood risk: Environment Agency, published 6 July 2026; 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 postcodes at high risk
Beside each: how many of its homes and businesses the Environment Agency puts at that risk.
Where the postcodes at high or medium risk lie together
- 9 postcodes at high or medium risk, outlined on the map. SL3 0NF, is the one with most homes and businesses at high risk.
What is it like to live in Colnbrook?
Homes sold for a typical £360,000 in the 12 months to August 2026, up 38.7% on the 12 months before. At 25 of the 61 postcodes Ofcom reports on, every home and business can get gigabit broadband. The Environment Agency counts 63 homes and businesses at high or medium risk of flooding from rivers or the sea, at 22 of its 62 postcodes. It has 1 primary school at its postcodes. The nearest GP practice is Langley Health Centre, 1.7 km from the middle. The nearest railway station is Heathrow Terminal 5, 2.8 km from the middle of its postcodes in a straight line.
We don't rate places; here are the figures so you can judge.
Source: HM Land Registry, Ofcom, the Environment Agency, the Department for Education, NHS England and the Department for Transport, as each section of this page says. See all our data sources
What do homes cost in Colnbrook?
Homes in Colnbrook sold for a typical £360,000 in the 12 months to August 2026, across 11 sales, up 38.7% on the 12 months before, HM Land Registry's figures show.
- 12 months to August 2025
- £259,500
- 12 months to August 2026
- £360,000
▲ up 38.7% on the 12 months before
Across the whole SL3 district, Colnbrook's main postcode district: a typical £450,000.
Sales at the postcodes ONS places in Colnbrook: 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
Are new homes being built in Colnbrook?
1 of the 62 postcodes now in use in Colnbrook came into use in January 2020 or later, ONS says. In the 12 months to August 2025, 0 of the 17 homes sold in Colnbrook were newly built (0%), HM Land Registry's records show; across the SL3 district, Under 1%.
The newest postcodes
A new postcode is often a new street or estate, but Royal Mail also makes new postcodes when it reorganises old ones, so not every one means new homes. Only postcodes still in use are counted.
New homes among the homes sold
| Period | In Colnbrook | Across the SL3 district |
|---|---|---|
| The 12 months to August 2026 | 0 of 11 (0%) | 0 of 289 (0%) |
| The 12 months to August 2025 | 0 of 17 (0%) | 1 of 390 (Under 1%) |
Standard sales of homes at market value that HM Land Registry marks as newly built. New homes take longer to be registered than other sales, so the latest 12 months count fewer of them than were sold. A share is given from 5 sales or more.
Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026; HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021, Open Government Licence v3.0. How we use it
What broadband can you get in Colnbrook?
Ofcom reports on 61 of the 62 postcodes in Colnbrook. At 25 of them every home and business can get gigabit broadband.
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 checkerSource: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it
Is Colnbrook at risk of flooding?
22 of the 62 postcodes in Colnbrook 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 63 homes and businesses in an area at high or medium risk.
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
Which schools are in Colnbrook?
The primary schools are at the postcodes in Colnbrook. There is no secondary school at its postcodes; these are the nearest to its middle. Distances are straight lines from the middle of its postcodes. Distance is not a catchment: each council sets its own admission rules.
Source: Department for Education, Get Information about Schools, read 17 October 2026, Open Government Licence v3.0. Each school opens its own record there. How we use it
How far is the station from Colnbrook?
The nearest railway station to the centre point of the postcodes in Colnbrook is Heathrow Terminal 5 Rail Station, 2.8 km away in a straight line.
- Heathrow Terminal 5 Rail Station Railway station 2.8 kmCycle
- Sunnymeads Rail Station Railway station 2.8 kmCycle
- Langley (Berks) Rail Station Railway station 3.0 kmCycle
- Heathrow Terminal 5 Underground Station Underground, metro or tram 2.8 kmCycle
Straight-line distances from the centre point, not routes. Walk: under 1.2 km. Cycle: 1.2 to 5 km. Drive: further.
Straight-line distances from the middle of the postcodes, not routes. Each postcode page lists its own nearest stations and bus stops. The Department for Transport's register does not say how often services run.
Source: Department for Transport, NaPTAN, read 17 October 2026, Open Government Licence v3.0. How we use it
Which GP surgeries are in Colnbrook?
There is no GP practice at the postcodes in Colnbrook. These are the nearest to its middle, in a straight line. Each practice sets the area it takes patients from, so check with it before registering.
- Langley Health Centre1.7 km
- The Orchard Surgery2.5 km
- Datchet Health Centre3.6 km
Source: NHS England, Organisation Data Service (GP practices), read 17 October 2026, Open Government Licence v3.0. How we use it
Is Colnbrook safe? Crime recorded around it
Police.uk records 830 crimes and reports of anti-social behaviour within a mile of the middle of the postcodes in Colnbrook over the 12 months from September 2025 to August 2026. August 2026 is the latest month it has published. These are counts, not a rate: we hold no count of the people who live, work or pass through, so we do not say whether a place is safe.
Each month, September 2025 to August 2026
- 80 September 2025
- 67 October 2025
- 65 November 2025
- 53 December 2025
- 56 January 2026
- 61 February 2026
- 75 March 2026
- 54 April 2026
- 70 May 2026
- 83 June 2026
- 91 July 2026
- 75 August 2026
By kind, over the 12 months
Also: shoplifting 21, other crime 16, robbery 9, bicycle theft 8, possession of weapons 6, theft from the person 5.
Police.uk says its locations "always represent the approximate location of a crime". Each crime is moved to the nearest of a fixed list of map points, each over a street centre, a public place or a commercial premises, chosen so that every point covers at least eight addresses or none. A mile is a wide circle: in a town it takes in the centre and its shops, where much crime is recorded.
Crime around one postcodeSource: Police.uk (data.police.uk), data to August 2026, from its download of 30 September 2026, Open Government Licence v3.0. How we use it
Who runs Colnbrook?
- Councils
- Slough (61) and Windsor and Maidenhead (1)
- Parliamentary constituency
- Windsor
- Police force area
- Thames Valley
- Region
- South East
- Country
- England
- MP
- Jack Rankin (Conservative)
Where the place crosses a boundary, a row lists each side with its number of postcodes. Check a postcode for its own. What council am I in?
Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. The MP: UK Parliament. See all our data sources
Moving to Colnbrook
Who to tell and what to sort out in your first week.
- Tell the council about council tax Councils A to Z
- Register to vote at the new address Register to vote on GOV.UK
- Register with a GP practice The nearest GP practices
- Take meter readings on the day you move in
- Power cut? Call 105. It is free. About 105, the power cut number
- Find out your bin day Find your rubbish collection day on GOV.UK
Colnbrook postcodes
62 postcodes in use in Colnbrook, by district:
That district is in the SL postcode area.
Check a Colnbrook postcode
Enter a full postcode to see its ward, its flood risk, house prices in its sector and its nearest schools.
Do not know the postcode? What is my postcode?
Places near Colnbrook
With the typical price of a home in each, to set beside Colnbrook's £360,000. Distances are straight lines between the middles of each place's postcodes.
Questions about Colnbrook
- What is it like to live in Colnbrook?
- Homes sold for a typical £360,000 in the 12 months to August 2026, up 38.7% on the 12 months before. At 25 of the 61 postcodes Ofcom reports on, every home and business can get gigabit broadband. The Environment Agency counts 63 homes and businesses at high or medium risk of flooding from rivers or the sea, at 22 of its 62 postcodes. It has 1 primary school at its postcodes. The nearest GP practice is Langley Health Centre, 1.7 km from the middle. The nearest railway station is Heathrow Terminal 5, 2.8 km from the middle of its postcodes in a straight line. We don't rate places; here are the figures so you can judge. Source: HM Land Registry, Ofcom, the Environment Agency, the Department for Education, NHS England and the Department for Transport, as each section of this page says.
- What is the postcode for Colnbrook?
- Colnbrook is covered by postcode district SL3, across 62 postcodes in use. Source: ONS Postcode Directory.
- Who is the MP for Colnbrook?
- Colnbrook is in the Windsor parliamentary constituency. Its MP is Jack Rankin (Conservative), as UK Parliament listed them on 14 October 2026. Constituency: ONS Postcode Directory.
- How much are houses in Colnbrook?
- Homes in Colnbrook sold for a typical £360,000 in the 12 months to August 2026, across 11 sales, up 38.7% on the 12 months before. Source: HM Land Registry Price Paid Data, files dated 28 September 2026.
- What schools are in Colnbrook?
- In Colnbrook, primary schools at its postcodes include Colnbrook Church of England Primary School; the nearest secondary school to the middle of its postcodes is Langley Grammar School, 2.6 km away in a straight line. Source: Department for Education, Get Information about Schools, read 17 October 2026.
- Does Colnbrook have a railway station?
- The nearest railway station to the centre point of the postcodes in Colnbrook is Heathrow Terminal 5, 2.8 km away in a straight line. Source: Department for Transport, NaPTAN, read 17 October 2026.
- What broadband can you get in Colnbrook?
- Ofcom reports on 61 of the 62 postcodes in Colnbrook. At 25 of them every home and business can get gigabit broadband. Source: Ofcom, Connected Nations, Spring 2026.
- Is Colnbrook at risk of flooding?
- 22 of the 62 postcodes in Colnbrook 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 63 homes and businesses in an area at high or medium risk. This is long-term risk for the land, and leaves out surface water. Source: Environment Agency.
- Are new homes being built in Colnbrook?
- 1 of the 62 postcodes now in use in Colnbrook came into use in January 2020 or later, ONS says. In the 12 months to August 2025, 0 of the 17 homes sold in Colnbrook were newly built (0%), HM Land Registry's records show; across the SL3 district, Under 1%. Source: ONS Postcode Directory and HM Land Registry Price Paid Data.
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