Trehafod is a village and community in the Rhondda Valley between Porth and Pontypridd in the county borough of Rhondda Cynon Taf, Wales, with a population of 698 in the 2011 census.(The earlier name Hafod was altered in 1905 to avoid confusion with Hafod near Swansea. Until then, Trehafod had been part of Hafod).

Porth is a town and a community in the county borough of Rhondda Cynon Taf, within the historic county boundaries of Glamorgan, Wales. Lying in the Rhondda Valley, it is regarded as the gateway connecting the Rhondda Fawr and Rhondda Fach valleys due to both valleys meeting at Porth. The Welsh word "porth" means "gate". Porth is a predominantly English-speaking community.