The village is home to the Welsh-medium Ysgol Hafodwenog (Hafodwenog Community Primary School), which has around 60 pupils aged 4 to 11, and was opened in 1972 to serve the children of the surrounding settlements of Alma, Bryn Iwan, Cilrhedyn, Dinas, Gelliwen, Pandy, Penybont, and Talog, as well as those of Trelech itself.
Trelech has a community centre (in the building, across the road, which housed the modern school's predecessor) and a pub, the Tafarn Beca. However, given the area's very rural and lightly populated nature, the village no longer has a shop or post office. There is a children's play area, and the school also has a small soccer field.
Governance
A Trelechelectoral ward exists which covers the area. This ward stretches beyond the confines of Trelech community with a total population at the 2011 Census of 2,072.[2]
Notable people
David Rees, (1801–1869), a reforming Welsh Congregationalist minister, also known as Y Cynhyrfwr
Perceval Gibbon (1879–1926), an author, journalist, poet and short-story writer.
David Nott OBE OStJ FRCS (born 1956) a Welsh consultant surgeon in London, he volunteers to work in disaster and war zones. He grew up with his grandparents in Trelech
