Postcode SY18
Cwmbelan +7 · Powys, Wales
SY18 is the postcode of Cwmbelan, Dolfach, Geufron and 5 other places in Powys, Wales, United Kingdom. This list covers outward codes — the first half of a UK postcode, such as M9 or BN91 — not full postcodes.
- Postcode
- SY18
- County
- Powys
- Country
- Wales
- Country
- United Kingdom
8 places with postcode SY18
| Place | County | Location |
|---|---|---|
| Cwmbelan | Powys | 52.428, -3.573 |
| Dolfach | Powys | 52.428, -3.573 |
| Geufron | Powys | 52.428, -3.573 |
| Llangurig | Powys | 52.406, -3.606 |
| Llanidloes | Powys | 52.450, -3.540 |
| Pant Mawr | Powys | 52.428, -3.573 |
| Tyn-y-Cwm | Powys | 52.428, -3.573 |
| Y Fan | Powys | 52.428, -3.573 |
Near Cardiff
The nearest major city is Cardiff, about 109 km away.
Nearby postcodes
Frequently asked questions
Which places use postcode SY18?
Cwmbelan, Dolfach, Geufron, Llangurig, Llanidloes, Pant Mawr, Tyn-y-Cwm, Y Fan.
Which county and country is SY18 in?
Powys, Wales, United Kingdom.
What is the nearest major city to SY18?
Cardiff, about 109 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.