It shares a boundary to the north with Avilés and Gozón; to the east with Carreño and Gijón; to the south with Llanera and Illas and to the west with Castrillón.

It is 45.48 km2 (17.56 sq mi) in size and has a population of over 16,000 residents, mainly concentrated in the villages of Las Vegas and Los Campos.

They left their traces in two "castros" (fortified villages) that have not been excavated yet: Pico Castiello in Molleda and Castiellu in Camina, Solís.

These "castros" were most probably used by the Romans, and we have some traces of their presence there, some of them so important as the Estela Antropomorfa de Molleda (human-shaped figure), nowadays can be seen in the Archaeological Museum of Asturias.In the 10th century the villages of the county of Aviles became together to form an only geographical entity known as the "Alfoz de Gauzzone"; but it is not until the year 1120 that we find the first written references to the county of Corvera in the Liber Testamentorum.

In the mid 20th century the iron and steel industry starts functioning in Avilés and the old rural centres begin to shelter the thousands of immigrants working for ENSIDESA (current Arcelor modifying the aspect of the county, due to the building of new districts near the factories, such as Tresona and Les Vegues.