How many languages are spoken in Spain? - Pangeanic

How many languages are spoken in Spain? - Pangeanic: 'Bon dia! Egun on! Bo día!' are all acceptable forms of greeting in Spain; except for the fact that they derive from different languages that can be heard If you speak fluent castellano, you can conversate in any part of Spain. So, how many languages are spoken in Spain and who uses those Romance languages?