Cobreros is a municipality in the province of Zamora, within the autonomous community of Castile and León, Spain. It is located in the northwestern part of the country, in a region characterised by its rural landscape and small, dispersed settlements.
The municipality had a population of 613 inhabitants according to the 2009 census carried out by Spain's National Statistics Institute (INE). Like many municipalities in this part of Castile and León, Cobreros is a small, sparsely populated community.