TW6 postcode district: Hillingdon and around

TW6 is a postcode district in England, with 124 postcodes in use in 3 sectors. It has postcodes in Hillingdon and Hounslow. It is split between 3 councils: Hillingdon (120 postcodes), Hounslow (3) and Spelthorne (1). 1 of its 124 postcodes is in Surrey. ONS lists no county for the other 123.

Postcodes in use
124
Sectors
3
Councils
3 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 TW6, by flood risk

Map of every postcode in TW6, by flood risk Of the 124 postcodes in TW6 that ONS places, 124 are not on the Environment Agency's at-risk list. Places named: Stanwell. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A315A312A314A3006 TW6 1AA: not on the flood risk listTW6 1AH: not on the flood risk listTW6 1AP: not on the flood risk listTW6 1AU: not on the flood risk listTW6 1BB: not on the flood risk listTW6 1BP: not on the flood risk listTW6 1DB: not on the flood risk listTW6 1DJ: not on the flood risk listTW6 1EF: not on the flood risk listTW6 1EL: not on the flood risk listTW6 1NP: not on the flood risk listTW6 1PJ: not on the flood risk listTW6 1PY: not on the flood risk listTW6 1PZ: not on the flood risk listTW6 1QB: not on the flood risk listTW6 1QT: not on the flood risk listTW6 1RA: not on the flood risk listTW6 1RU: not on the flood risk listTW6 1SL: not on the flood risk listTW6 2AA: not on the flood risk listTW6 2AB: not on the flood risk listTW6 2AH: not on the flood risk listTW6 2AL: not on the flood risk listTW6 2AP: not on the flood risk listTW6 2AQ: not on the flood risk listTW6 2AS: not on the flood risk listTW6 2AU: not on the flood risk listTW6 2BJ: not on the flood risk listTW6 2DL: not on the flood risk listTW6 2DN: not on the flood risk listTW6 2DT: not on the flood risk listTW6 2EB: not on the flood risk listTW6 2FB: not on the flood risk listTW6 2FF: not on the flood risk listTW6 2FG: not on the flood risk listTW6 2FH: not on the flood risk listTW6 2FL: not on the flood risk listTW6 2GA: not on the flood risk listTW6 2GB: not on the flood risk listTW6 2GD: not on the flood risk listTW6 2GE: not on the flood risk listTW6 2GX: not on the flood risk listTW6 2JD: not on the flood risk listTW6 2LA: not on the flood risk listTW6 2PL: not on the flood risk listTW6 2PX: not on the flood risk listTW6 2QA: not on the flood risk listTW6 2QD: not on the flood risk listTW6 2QE: not on the flood risk listTW6 2RF: not on the flood risk listTW6 2RG: not on the flood risk listTW6 2RL: not on the flood risk listTW6 2RN: not on the flood risk listTW6 2RP: not on the flood risk listTW6 2RS: not on the flood risk listTW6 2RT: not on the flood risk listTW6 2SD: not on the flood risk listTW6 2SQ: not on the flood risk listTW6 2SU: not on the flood risk listTW6 2UA: not on the flood risk listTW6 3AE: not on the flood risk listTW6 3AF: not on the flood risk listTW6 3AQ: not on the flood risk listTW6 3FB: not on the flood risk listTW6 3FD: not on the flood risk listTW6 3FE: not on the flood risk listTW6 3FH: not on the flood risk listTW6 3FJ: not on the flood risk listTW6 3JF: not on the flood risk listTW6 3JJ: not on the flood risk listTW6 3LW: not on the flood risk listTW6 3PF: not on the flood risk listTW6 3PR: not on the flood risk listTW6 3QY: not on the flood risk listTW6 3RE: not on the flood risk listTW6 3RG: not on the flood risk listTW6 3RN: not on the flood risk listTW6 3RT: not on the flood risk listTW6 3SF: not on the flood risk listTW6 3SH: not on the flood risk listTW6 3SJ: not on the flood risk listTW6 3SL: not on the flood risk listTW6 3SY: not on the flood risk listTW6 3UA: not on the flood risk listTW6 3XE: not on the flood risk listTW6 3XL: not on the flood risk listTW6 3YH: not on the flood risk list Stanwell Map of every postcode in TW6, by flood risk Of the 124 postcodes in TW6 that ONS places, 124 are not on the Environment Agency's at-risk list. Places named: Stanwell. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A315A3005A314 Stanwell
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 124

Of the 124 postcodes in TW6 that ONS places, 124 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.

The middle of its postcodes: latitude 51.4708, longitude -0.4487. 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

What broadband can you get in TW6?

Ofcom reports on 75 of the 124 postcodes in TW6. At none of them every home and business can get gigabit broadband, and at 3 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit0 of 75
Postcodes where every home can get superfast0 of 75
Postcodes where some cannot get decent broadband3 of 75

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 TW6 at risk of flooding?

None of the 124 postcodes in TW6 is on the Environment Agency's list of postcodes with a home or business in an area at risk of flooding from rivers or the sea.

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

Postcodes in TW6

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

TW6 136 postcodesTW6 254 postcodesTW6 334 postcodes
UK postcode format explained

Places in TW6

Towns and villages with postcodes in TW6, and how many each has here.

Hillingdon postcodes,120Hounslow postcodes,3

Who covers TW6

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

  • Hayes and Harlington120
  • Brentford and Isleworth3
  • Spelthorne1

Police force areas

  • Metropolitan Police123
  • Surrey1

Next to TW6

TW5 postcode district TW7 postcode district All TW districts Hillingdon postcodes

"Next to" is by number: the districts before and after TW6 in the TW area.

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