Tongwynlais is a small village and community in north Cardiff, Wales, with a population of 1,871 as of 2011. It lies north of the M4 motorway in the Taff Valley and is noted for the nearby hillside landmark, Castell Coch.
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Tongwynlais is a village and community in north Cardiff, Wales, north of the M4 motorway in the Taff Valley. It is notable as the location of the hillside landmark, Castell Coch. The population as of the 2011 census was 1,871. The locality falls within the CF 15 postal district, situating it within the broader Cardiff area. Residents and visitors alike can appreciate the village’s small‑town character and its proximity to the historic Castell Coch, a prominent hillside landmark that adds cultural and scenic interest to the area. The community’s modest population size suggests a quieter, close‑knit environment, while its position in the Taff Valley provides a natural setting that may appeal to those seeking a blend of rural charm and access to the larger city of Cardiff.