Postcode SE21
Dulwich +2 · Greater London, England
SE21 is the postcode of Dulwich, Sydenham Hill, West Dulwich 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
- SE21
- County
- Greater London
- Country
- England
- Country
- United Kingdom
3 places with postcode SE21
| Place | County | Location |
|---|---|---|
| Dulwich | Greater London | 51.450, -0.083 |
| Sydenham Hill | Greater London | 51.444, -0.088 |
| West Dulwich | Greater London | 51.438, -0.094 |
Near London
The nearest major city is London, about 8 km away.
Nearby postcodes
Frequently asked questions
Which places use postcode SE21?
Dulwich, Sydenham Hill, West Dulwich.
Which county and country is SE21 in?
Greater London, England, United Kingdom.
What is the nearest major city to SE21?
London, about 8 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.