Treharris business phone numbers
Treharris is a town in Merthyr Tydfil County Borough, Wales, population 6,272 (2021). We hold no sourced dialling code for Treharris, so this page does not state one. Codes whose telephone exchange town is in Merthyr Tydfil County Borough: 01685.
Treharris at a glance
- Dialling code
- Not stated (no sourced code)
- Local authority
- Merthyr Tydfil County Borough
- Principal area
- Merthyr Tydfil County Borough
- Nation / region
- Wales
- Status
- Town
- Population
- 6,272 (2021)
- Coordinates
- 51.664, -3.304
Place data: Wikidata Q3404051 (retrieved 26 September 2026). Codes: Ofcom geographic area codes. Stock: Silux Call number catalogue.
Codes with an exchange town in Merthyr Tydfil County Borough
These codes are named after exchange towns in Merthyr Tydfil County Borough. They are listed for reference; we do not know which one serves Treharris.
Towns near Treharris
| Town | Distance | Code | Area |
|---|---|---|---|
| Merthyr Tydfil | 10.6 km | 01685 | Merthyr Tydfil County Borough |
| Gelligaer | 3.7 km | — | Caerphilly County Borough |
| Ystrad Mynach | 5.2 km | — | Caerphilly County Borough |
| Mountain Ash | 5.5 km | 01443 | Rhondda Cynon Taf |
Treharris: questions answered
What dialling code does Treharris use?
We have no sourced code for Treharris and do not guess one. Codes whose exchange town is in Merthyr Tydfil County Borough are 01685; check with your current provider which one your line uses.
Which towns are near Treharris?
Merthyr Tydfil (10.6 km, 01685), Gelligaer (3.7 km), Ystrad Mynach (5.2 km), Mountain Ash (5.5 km, 01443).
Can I move my existing Treharris number to Silux Call?
Yes, if it is a UK geographic number. Porting is free on every paid plan, is handled by our team, and typically takes approximately 14 working days from submission.
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