Tinahely lies south of the Wicklow Mountains in a valley of the River Derry, which runs through the heart of the village.
The population of Tinahely itself in the 2002 census was 692, although the electoral division had 1,227 persons registered.
The Courthouse Arts Centre is based in the former courthouse building in the centre of the village. The Courthouse hosts musical performances, artist exhibitions, play and film screenings. The building itself was restored by a committee of local people with help from FAS.