Spain: TopicOfficially Kingdom of Spain, constitutional monarchy (2005 est. pop. 40,341,000), 194,884 sq mi (504,750 sq km), including the Balearic and Canary islands, SW Europe. It consists of the Spanish mainland (190,190 sq mi/492,592 sq km), which occupies the major part of the Iberian Peninsula; of the Balearic Islands in the Mediterranean Sea; and of the Canary Islands in the Atlantic Ocean.