TW4 postcode district: Hounslow and around

TW4 is a postcode district in England, with 428 postcodes in use in 3 sectors. It has postcodes in Hounslow and Richmond upon Thames. It is split between 2 councils: Hounslow (363 postcodes) and Richmond upon Thames (65).

Postcodes in use
428
Sectors
3
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 TW4, by flood risk

Map of every postcode in TW4, by flood risk Of the 428 postcodes in TW4 that ONS places, 2 have a home or business at high risk and 426 are not on the Environment Agency's at-risk list. Places named: Cranford, Hounslow West. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. TW4 5AA: not on the flood risk listTW4 5AB: not on the flood risk listTW4 5AD: not on the flood risk listTW4 5AE: not on the flood risk listTW4 5AF: not on the flood risk listTW4 5AH: not on the flood risk listTW4 5AJ: not on the flood risk listTW4 5AL: not on the flood risk listTW4 5AN: not on the flood risk listTW4 5AP: not on the flood risk listTW4 5AQ: not on the flood risk listTW4 5AR: not on the flood risk listTW4 5AT: not on the flood risk listTW4 5AW: not on the flood risk listTW4 5AY: not on the flood risk listTW4 5AZ: not on the flood risk listTW4 5BA: not on the flood risk listTW4 5BB: not on the flood risk listTW4 5BD: not on the flood risk listTW4 5BF: not on the flood risk listTW4 5BG: not on the flood risk listTW4 5BH: not on the flood risk listTW4 5BJ: not on the flood risk listTW4 5BL: not on the flood risk listTW4 5BN: not on the flood risk listTW4 5BP: not on the flood risk listTW4 5BQ: not on the flood risk listTW4 5BS: not on the flood risk listTW4 5BT: not on the flood risk listTW4 5BU: not on the flood risk listTW4 5BW: not on the flood risk listTW4 5BX: not on the flood risk listTW4 5DB: not on the flood risk listTW4 5DD: not on the flood risk listTW4 5DE: not on the flood risk listTW4 5DF: not on the flood risk listTW4 5DG: not on the flood risk listTW4 5DJ: not on the flood risk listTW4 5DL: not on the flood risk listTW4 5DN: not on the flood risk listTW4 5DQ: not on the flood risk listTW4 5DR: not on the flood risk listTW4 5DS: not on the flood risk listTW4 5DZ: not on the flood risk listTW4 5EA: not on the flood risk listTW4 5EB: not on the flood risk listTW4 5ED: not on the flood risk listTW4 5EE: not on the flood risk listTW4 5EF: not on the flood risk listTW4 5EG: not on the flood risk listTW4 5EH: not on the flood risk listTW4 5EJ: not on the flood risk listTW4 5EL: not on the flood risk listTW4 5EN: not on the flood risk listTW4 5EP: not on the flood risk listTW4 5EQ: not on the flood risk listTW4 5ER: not on the flood risk listTW4 5ET: not on the flood risk listTW4 5EU: not on the flood risk listTW4 5EW: not on the flood risk listTW4 5EX: not on the flood risk listTW4 5EY: not on the flood risk listTW4 5EZ: not on the flood risk listTW4 5HA: not on the flood risk listTW4 5HE: not on the flood risk listTW4 5HF: not on the flood risk listTW4 5HG: not on the flood risk listTW4 5HH: not on the flood risk listTW4 5HJ: not on the flood risk listTW4 5HL: not on the flood risk listTW4 5HN: not on the flood risk listTW4 5HP: not on the flood risk listTW4 5HQ: not on the flood risk listTW4 5HS: not on the flood risk listTW4 5HT: not on the flood risk listTW4 5HU: not on the flood risk listTW4 5HW: not on the flood risk listTW4 5HX: not on the flood risk listTW4 5HY: not on the flood risk listTW4 5HZ: not on the flood risk listTW4 5JB: not on the flood risk listTW4 5JD: not on the flood risk listTW4 5JE: not on the flood risk listTW4 5JG: not on the flood risk listTW4 5JH: not on the flood risk listTW4 5JJ: not on the flood risk listTW4 5JL: not on the flood risk listTW4 5JP: not on the flood risk listTW4 5JQ: not on the flood risk listTW4 5JR: not on the flood risk listTW4 5JT: not on the flood risk listTW4 5JU: not on the flood risk listTW4 5JW: not on the flood risk listTW4 5JX: not on the flood risk listTW4 5JY: not on the flood risk listTW4 5JZ: not on the flood risk listTW4 5LA: not on the flood risk listTW4 5LB: not on the flood risk listTW4 5LD: not on the flood risk listTW4 5LE: not on the flood risk listTW4 5LF: not on the flood risk listTW4 5LG: not on the flood risk listTW4 5LH: not on the flood risk listTW4 5LJ: not on the flood risk listTW4 5LL: not on the flood risk listTW4 5LN: not on the flood risk listTW4 5LP: not on the flood risk listTW4 5LQ: not on the flood risk listTW4 5LR: not on the flood risk listTW4 5LS: not on the flood risk listTW4 5LU: not on the flood risk listTW4 5LW: not on the flood risk listTW4 5LX: not on the flood risk listTW4 5LY: not on the flood risk listTW4 5LZ: not on the flood risk listTW4 5NA: not on the flood risk listTW4 5NB: not on the flood risk listTW4 5NG: not on the flood risk listTW4 5NJ: not on the flood risk listTW4 5NL: not on the flood risk listTW4 5NN: not on the flood risk listTW4 5NP: not on the flood risk listTW4 5NQ: not on the flood risk listTW4 5NR: not on the flood risk listTW4 5NS: not on the flood risk listTW4 5NT: not on the flood risk listTW4 5NU: not on the flood risk listTW4 5NW: not on the flood risk listTW4 5NY: not on the flood risk listTW4 5PD: not on the flood risk listTW4 5PF: not on the flood risk listTW4 5PG: not on the flood risk listTW4 5PH: not on the flood risk listTW4 5PJ: not on the flood risk listTW4 5PL: not on the flood risk listTW4 5PN: not on the flood risk listTW4 5PP: not on the flood risk listTW4 5PQ: not on the flood risk listTW4 5PR: not on the flood risk listTW4 5PS: not on the flood risk listTW4 5PT: not on the flood risk listTW4 5PU: not on the flood risk listTW4 5PW: not on the flood risk listTW4 5PX: not on the flood risk listTW4 5PY: not on the flood risk listTW4 5QE: not on the flood risk listTW4 5QF: not on the flood risk listTW4 5QH: not on the flood risk listTW4 5QJ: not on the flood risk listTW4 5QL: not on the flood risk listTW4 5QN: not on the flood risk listTW4 5QP: not on the flood risk listTW4 5QW: not on the flood risk listTW4 5SY: not on the flood risk listTW4 5WW: not on the flood risk listTW4 5XA: not on the flood risk listTW4 6AA: not on the flood risk listTW4 6AB: not on the flood risk listTW4 6AD: not on the flood risk listTW4 6AE: not on the flood risk listTW4 6AF: not on the flood risk listTW4 6AG: not on the flood risk listTW4 6AH: not on the flood risk listTW4 6AJ: not on the flood risk listTW4 6AL: not on the flood risk listTW4 6AN: not on the flood risk listTW4 6AP: not on the flood risk listTW4 6AQ: not on the flood risk listTW4 6AR: not on the flood risk listTW4 6AS: not on the flood risk listTW4 6AW: not on the flood risk listTW4 6AX: not on the flood risk listTW4 6AY: not on the flood risk listTW4 6AZ: not on the flood risk listTW4 6BA: not on the flood risk listTW4 6BE: not on the flood risk listTW4 6BH: not on the flood risk listTW4 6BL: not on the flood risk listTW4 6BQ: not on the flood risk listTW4 6BT: not on the flood risk listTW4 6BU: not on the flood risk listTW4 6BW: not on the flood risk listTW4 6BX: not on the flood risk listTW4 6BY: not on the flood risk listTW4 6DA: not on the flood risk listTW4 6DE: not on the flood risk listTW4 6DF: not on the flood risk listTW4 6DL: not on the flood risk listTW4 6DN: not on the flood risk listTW4 6DR: not on the flood risk listTW4 6DS: not on the flood risk listTW4 6DT: not on the flood risk listTW4 6DW: not on the flood risk listTW4 6DX: not on the flood risk listTW4 6EB: not on the flood risk listTW4 6EE: not on the flood risk listTW4 6EH: not on the flood risk listTW4 6EJ: not on the flood risk listTW4 6EL: not on the flood risk listTW4 6EN: not on the flood risk listTW4 6EQ: not on the flood risk listTW4 6ER: not on the flood risk listTW4 6ES: not on the flood risk listTW4 6ET: not on the flood risk listTW4 6EU: not on the flood risk listTW4 6EW: not on the flood risk listTW4 6EX: not on the flood risk listTW4 6EY: not on the flood risk listTW4 6FA: not on the flood risk listTW4 6FB: not on the flood risk listTW4 6FE: not on the flood risk listTW4 6HB: not on the flood risk listTW4 6HD: not on the flood risk listTW4 6HF: not on the flood risk listTW4 6HG: not on the flood risk listTW4 6HH: not on the flood risk listTW4 6HN: not on the flood risk listTW4 6HP: not on the flood risk listTW4 6HQ: not on the flood risk listTW4 6HR: not on the flood risk listTW4 6HS: not on the flood risk listTW4 6HT: not on the flood risk listTW4 6HU: not on the flood risk listTW4 6HW: not on the flood risk listTW4 6HY: not on the flood risk listTW4 6JF: not on the flood risk listTW4 6JG: not on the flood risk listTW4 6JQ: not on the flood risk listTW4 6JR: not on the flood risk listTW4 6LA: not on the flood risk listTW4 6LB: not on the flood risk listTW4 6LD: not on the flood risk listTW4 6LE: not on the flood risk listTW4 6LF: not on the flood risk listTW4 6LJ: not on the flood risk listTW4 6LL: not on the flood risk listTW4 6LN: not on the flood risk listTW4 6LR: not on the flood risk listTW4 6LS: not on the flood risk listTW4 6LT: not on the flood risk listTW4 6LU: not on the flood risk listTW4 6LW: not on the flood risk listTW4 6LX: not on the flood risk listTW4 6LY: not on the flood risk listTW4 6NA: not on the flood risk listTW4 6NB: not on the flood risk listTW4 6NF: not on the flood risk listTW4 6NW: not on the flood risk listTW4 7AA: not on the flood risk listTW4 7AB: not on the flood risk listTW4 7AD: not on the flood risk listTW4 7AE: not on the flood risk listTW4 7AF: not on the flood risk listTW4 7AG: not on the flood risk listTW4 7AH: not on the flood risk listTW4 7AJ: not on the flood risk listTW4 7AL: not on the flood risk listTW4 7AN: not on the flood risk listTW4 7AP: not on the flood risk listTW4 7AR: not on the flood risk listTW4 7AS: not on the flood risk listTW4 7AT: not on the flood risk listTW4 7AU: not on the flood risk listTW4 7AX: not on the flood risk listTW4 7AY: not on the flood risk listTW4 7BB: not on the flood risk listTW4 7BD: not on the flood risk listTW4 7BE: not on the flood risk listTW4 7BF: not on the flood risk listTW4 7BG: not on the flood risk listTW4 7BH: not on the flood risk listTW4 7BJ: not on the flood risk listTW4 7BL: not on the flood risk listTW4 7BN: not on the flood risk listTW4 7BP: not on the flood risk listTW4 7BQ: not on the flood risk listTW4 7BS: not on the flood risk listTW4 7BT: not on the flood risk listTW4 7BU: not on the flood risk listTW4 7BW: not on the flood risk listTW4 7BX: not on the flood risk listTW4 7BY: not on the flood risk listTW4 7BZ: not on the flood risk listTW4 7DA: not on the flood risk listTW4 7DB: not on the flood risk listTW4 7DD: not on the flood risk listTW4 7DE: not on the flood risk listTW4 7DF: not on the flood risk listTW4 7DH: not on the flood risk listTW4 7DL: not on the flood risk listTW4 7DN: not on the flood risk listTW4 7DR: not on the flood risk listTW4 7DS: not on the flood risk listTW4 7DW: not on the flood risk listTW4 7EA: not on the flood risk listTW4 7EN: not on the flood risk listTW4 7EP: not on the flood risk listTW4 7ER: not on the flood risk listTW4 7ES: not on the flood risk listTW4 7ET: not on the flood risk listTW4 7EU: not on the flood risk listTW4 7EW: not on the flood risk listTW4 7EY: not on the flood risk listTW4 7EZ: not on the flood risk listTW4 7HB: not on the flood risk listTW4 7HD: not on the flood risk listTW4 7HE: not on the flood risk listTW4 7HF: not on the flood risk listTW4 7HG: not on the flood risk listTW4 7HH: not on the flood risk listTW4 7HJ: not on the flood risk listTW4 7HQ: not on the flood risk listTW4 7HT: not on the flood risk listTW4 7HW: not on the flood risk listTW4 7JE: not on the flood risk listTW4 7JF: not on the flood risk listTW4 7JG: not on the flood risk listTW4 7JH: not on the flood risk listTW4 7JJ: not on the flood risk listTW4 7JL: not on the flood risk listTW4 7JN: not on the flood risk listTW4 7JP: not on the flood risk listTW4 7JQ: not on the flood risk listTW4 7JR: not on the flood risk listTW4 7JS: not on the flood risk listTW4 7JT: not on the flood risk listTW4 7JU: not on the flood risk listTW4 7JW: not on the flood risk listTW4 7JX: not on the flood risk listTW4 7LE: not on the flood risk listTW4 7LF: not on the flood risk listTW4 7LG: not on the flood risk listTW4 7LH: not on the flood risk listTW4 7LJ: not on the flood risk listTW4 7LP: not on the flood risk listTW4 7LQ: not on the flood risk listTW4 7LR: not on the flood risk listTW4 7LS: not on the flood risk listTW4 7LT: not on the flood risk listTW4 7LU: not on the flood risk listTW4 7LX: not on the flood risk listTW4 7LY: not on the flood risk listTW4 7LZ: not on the flood risk listTW4 7NB: not on the flood risk listTW4 7NE: not on the flood risk listTW4 7NF: not on the flood risk listTW4 7NG: not on the flood risk listTW4 7NH: not on the flood risk listTW4 7NJ: not on the flood risk listTW4 7NN: not on the flood risk listTW4 7NP: not on the flood risk listTW4 7NQ: not on the flood risk listTW4 7NR: not on the flood risk listTW4 7NS: not on the flood risk listTW4 7NT: not on the flood risk listTW4 7NU: not on the flood risk listTW4 7NW: not on the flood risk listTW4 7NX: not on the flood risk listTW4 7PA: not on the flood risk listTW4 7PB: not on the flood risk listTW4 7PD: not on the flood risk listTW4 7PE: not on the flood risk listTW4 7PF: not on the flood risk listTW4 7PG: not on the flood risk listTW4 7PH: not on the flood risk listTW4 7PJ: not on the flood risk listTW4 7PL: not on the flood risk listTW4 7PN: not on the flood risk listTW4 7PP: not on the flood risk listTW4 7PQ: not on the flood risk listTW4 7PR: not on the flood risk listTW4 7PS: not on the flood risk listTW4 7PT: not on the flood risk listTW4 7PW: not on the flood risk listTW4 7QA: not on the flood risk listTW4 7QB: not on the flood risk listTW4 7QD: not on the flood risk listTW4 7QE: not on the flood risk listTW4 7QF: not on the flood risk listTW4 7QG: not on the flood risk listTW4 7QH: not on the flood risk listTW4 7QJ: not on the flood risk listTW4 7QL: not on the flood risk listTW4 7QN: not on the flood risk listTW4 7QP: not on the flood risk listTW4 7QQ: not on the flood risk listTW4 7QR: not on the flood risk listTW4 7QW: not on the flood risk listTW4 7RA: not on the flood risk listTW4 7RB: not on the flood risk listTW4 7RD: not on the flood risk listTW4 7RE: not on the flood risk listTW4 7RF: not on the flood risk listTW4 7RG: not on the flood risk listTW4 7RH: not on the flood risk listTW4 7RJ: not on the flood risk listTW4 7RL: not on the flood risk listTW4 7RN: not on the flood risk listTW4 7RP: not on the flood risk listTW4 7RQ: not on the flood risk listTW4 7RR: not on the flood risk listTW4 7RS: not on the flood risk listTW4 7RT: not on the flood risk listTW4 7RU: not on the flood risk listTW4 7RW: not on the flood risk listTW4 7RX: not on the flood risk listTW4 7RY: not on the flood risk listTW4 7RZ: not on the flood risk listTW4 6DH: high flood riskTW4 6FD: high flood risk CranfordHounslow West Map of every postcode in TW4, by flood risk Of the 428 postcodes in TW4 that ONS places, 2 have a home or business at high risk and 426 are not on the Environment Agency's at-risk list. Places named: Cranford, Hounslow West. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A244A312 CranfordHounslow West
  • A home or business at high risk: 2
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 0
  • Not on the at-risk list: 426

Of the 428 postcodes in TW4 that ONS places, 2 have a home or business at high risk and 426 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 51.4655, longitude -0.3880. 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.

TW4 6DH1 at high riskTW4 6FD1 at high risk

What broadband can you get in TW4?

Ofcom reports on 400 of the 428 postcodes in TW4. At 302 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit302 of 400
Postcodes where every home can get superfast382 of 400

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 TW4 at risk of flooding?

2 of the 428 postcodes in TW4 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 2 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 2 of 428 postcodes High: 2Low: 1

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 TW4?

Homes in TW4 sold for a typical £453,000 in the 12 months to August 2026, across 92 sales, up 3% on the 12 months before, HM Land Registry's figures show.

£453,000 typical price, the 12 months to August 2026
£440,000 12 months to August 2025
▲ up 3% on the 12 months before
  • Detached 1 sale, too few to price
  • Semi-detached £585,000 33 sales
  • Terraced £453,000 32 sales
  • Flat or maisonette £302,500 26 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 TW4

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

TW4 5165 postcodesTW4 6102 postcodesTW4 7161 postcodes
UK postcode format explained

Places in TW4

Towns and villages with postcodes in TW4, and how many each has here.

Hounslow postcodes,362Richmond upon Thames postcodes,63

Who covers TW4

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

  • Feltham and Heston278
  • Brentford and Isleworth85
  • Twickenham65

Police force areas

  • Metropolitan Police428

Next to TW4

TW3 postcode district TW5 postcode district All TW districts Hounslow postcodes

"Next to" is by number: the districts before and after TW4 in the TW area.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.