 As there may be confusion between the demonyms of the inhabitants of Concepción and Penco.Due to the previous location of Concepción, inhabitants of that city are called "penquistas" while inhabitants of Penco are known as "pencones".In previous centuries, in the current location of Penco, was the first location where the city of Concepción was established, which is now the capital of the Bíobío Region.