 This economic growth continued until the 1930s, when it was interrupted as a consequence of a great drought and social problems connected with the Spanish Civil War and a hard postwar period characterized by a high rate of emigration.The municipality is administered through a City Council to which representatives are elected every four years by universal suffrage.The electorate consists of all the residents registered in Íllar of 18 years or older, natives of Spain, and citizens of other members of the European Union.