In Spain traditionally and historically, some autonomous communities are also divided into comarcas (singular comarca). A comarca is roughly equivalent to a US "county" or an English district. In some of the regions (e.g. Comarques of Catalonia) they are regulated by law and even their comarcal councils have some power, and therefore are clearly defined. In some other (e.g. Extremadura) their legal status is not very formal so they rather correspond to natural areas (valleys, mountain ridges, and so on).





An official classification establishes three comarques:
or sometimes four:
However, historic approaches (before the national classification into provinces) establish six comarques:



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