Before the arrival of large-scale industry in Langreo, Barros had been a town inhabited since the Middle Ages and devoted to agriculture and livestock, becoming one of the centers with the highest population concentration in the council.

This is confirmed by various documents, including the ceding of Alfonso VII of Alfoz de Barros to the bishopric.

Antonio de Arguelles y Valdés, who was a councillor of Castile and prosecutor of the Council of the Indies in the 17th century, lived in this house.

In addition to the health clinic, Barros is home to a centre for people with neurological disabilities, which is awaiting its opening.

The inhabitants of the parish are the Buzaricos and celebrate their festivals in honour of the Immaculate Conception at the end of August.