TW12 postcode district: Richmond upon Thames and around
TW12 is a postcode district in England, with 562 postcodes in use in 4 sectors. It has postcodes in Richmond upon Thames and Sunbury-on-Thames. It is split between 2 councils: Richmond upon Thames (561 postcodes) and Spelthorne (1). 1 of its 562 postcodes is in Surrey. ONS lists no county for the other 561.
- Postcodes in use
- 562
- Sectors
- 4
- Councils
- 2 councils
- Places
- 2 places
Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources
Every postcode in TW12, by flood risk
- A home or business at high risk: 7
- At medium risk at worst: 0
- At low risk at worst: 0
- At very low risk only: 1
- Not on the at-risk list: 554
Of the 562 postcodes in TW12 that ONS places, 7 have a home or business at high risk, 1 are at very low risk only and 554 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. 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.
The middle of its postcodes: latitude 51.4230, longitude -0.3697. 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.
What broadband can you get in TW12?
Ofcom reports on 538 of the 562 postcodes in TW12. At 446 of them every home and business can get gigabit broadband, and at 1 some cannot get decent broadband (10 Mbit/s).
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 TW12 at risk of flooding?
8 of the 562 postcodes in TW12 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 158 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
What do homes sell for in TW12?
Homes in TW12 sold for a typical £635,000 in the 12 months to August 2026, across 235 sales, down 4.5% on the 12 months before, HM Land Registry's figures show.
- Detached £1,150,000 29 sales
- Semi-detached £782,500 71 sales
- Terraced £560,000 85 sales
- Flat or maisonette £373,000 50 sales
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 TW12
Pick a sector, then a postcode. A sector is the district plus the next digit.
UK postcode format explainedPlaces in TW12
Towns and villages with postcodes in TW12, and how many each has here.
Who covers TW12
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
- Twickenham561
- Spelthorne1
Police force areas
- Metropolitan Police561
- Surrey1
Next to TW12
"Next to" is by number: the districts before and after TW12 in the TW area.
Check a postcode
Something wrong on this page? Report an error and we will check it against the source.