Postcode TW4
Hounslow · Greater London, England
TW4 is the postcode of Hounslow in Greater London, England, United Kingdom. This list covers outward codes — the first half of a UK postcode, such as M9 or BN91 — not full postcodes.
- Postcode
- TW4
- County
- Greater London
- Country
- England
- Country
- United Kingdom
Place with postcode TW4
| Place | County | Location |
|---|---|---|
| Hounslow | Greater London | 51.468, -0.361 |
Near London
The nearest major city is London, about 17 km away.
Nearby postcodes
Frequently asked questions
Which places use postcode TW4?
Hounslow.
Which county and country is TW4 in?
Greater London, England, United Kingdom.
What is the nearest major city to TW4?
London, about 17 km away.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.