The first verifiable written mentions of Ibias were recorded in the 11th century, where it was referred to as "Ibi" and "Ibia." In the 14th century, a legal dispute between the members of the ruling House of Ibias and their subjects, who sought recognition of their rights, was resolved in favor of the House. Four centuries later, after complaints due to abuses of power, the House had much of its territory seized, and Ibias lost some of its area. Furthermore, in 1836, the region of Degaña split off into a separate municipality, further shrinking Ibias.[2] Historically, Ibias is also known for its torneiros, skilled craftsman who fabricated and sold fine wooden utensils throughout Spain.[3]
In the 20th century, the parish of San Antolín went from tenth to first in terms of population in the municipality after the discovery of anthracite deposits in nearby Tormaleo; around this time, the coal mining industry became the major economic driver in the region.[2] Since the mid-20th century, however, Ibias has suffered a major population decline as a result of the closure of its mines and emigration due to urbanization.[4] As a result, Ibias has become the target of multiple initiatives funded by the Ministry of Environment aiming to revitalize the regional economy through the promotion of ecotourism.[5]