The earliest known remains found in the area are a tombstone from the Roman age and Arab coins from the time of Omadedaulat, the Saracen King of Zaragoza from 1109 to 1129. In 1233 King James I gave l'Alcalatén to the estate of Ximen d'Urrea, of which it remained part until 1798, when, on the death of Pedro Pablo Abarca de Bolea, it passed into the hands of the Ducal House of Hijar, to whom it belonged until 1818. While it became an independent parish in the 18th century, it was not until the 19th century that municipal independence followed. In 1889 Costur split off from L'Alcora.

Economy

There are practically no economically prosperous industrial activities in the area, because both trade and industry have reached such a low rate of development that they function only at a very basic level in order to meet the fundamental needs of the local population. Virtually all of the inhabitants of Costur earn their living working in the file factories in L'Alcora. 

What to see

Landscape

With an abrupt and rugged relief, the predominant vegetation in Costur is basically made up of Mediterranean scrublands, notably holm oaks, gorse, rosemary, palmetto, Phoenician juniper and juniper. Where trees are concerned, pines predominate, although recently there has been a steady increase in the number of kermes oaks, a species that is typical of the local area and which had seemed to be on the verge of extinction. With regards to crops, almonds and olives have overtaken vines, figs and carobs, which not too long ago formed the basis of the local economy.