Postcode HA1
Greenhill +1 · Greater London, England
HA1 is the postcode of Greenhill, Harrow on the Hill 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
- HA1
- County
- Greater London
- Country
- England
- Country
- United Kingdom
2 places with postcode HA1
| Place | County | Location |
|---|---|---|
| Greenhill | Greater London | 51.583, -0.339 |
| Harrow on the Hill | Greater London | 51.571, -0.334 |
Near London
The nearest major city is London, about 16 km away.
Nearby postcodes
Frequently asked questions
Which places use postcode HA1?
Greenhill, Harrow on the Hill.
Which county and country is HA1 in?
Greater London, England, United Kingdom.
What is the nearest major city to HA1?
London, about 16 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.