Postcode OL11
Castleton +1 · Greater Manchester, England
OL11 is the postcode of Castleton, Slattocks in Greater Manchester, England, United Kingdom. This list covers outward codes — the first half of a UK postcode, such as M9 or BN91 — not full postcodes.
- Postcode
- OL11
- County
- Greater Manchester
- Country
- England
- Country
- United Kingdom
2 places with postcode OL11
| Place | County | Location |
|---|---|---|
| Castleton | Greater Manchester | 53.583, -2.183 |
| Slattocks | Greater Manchester | 53.583, -2.183 |
Near Oldham
The nearest major city is Oldham, about 6 km away.
Nearby postcodes
Frequently asked questions
Which places use postcode OL11?
Castleton, Slattocks.
Which county and country is OL11 in?
Greater Manchester, England, United Kingdom.
What is the nearest major city to OL11?
Oldham, about 6 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.