The Welsh village of Trelech is located within the county of Dyfed and has a population of approximately 3,200.
Most of Trelech is governed by Sir Gaerfyrddin - Carmarthenshire council with the remainder being in the area of Sir Benfro - Pembrokeshire council
Trelech is policed by Dyfed-Powys Police
The largest Parliamentary Constituency in Trelech is Carmarthen West and South Pembrokeshire (66.67%) with the remainder being in Preseli Pembrokeshire (22.22%) and Carmarthen East and Dinefwr (11.11%).
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