Some quick "on top of my head" math tells me ~10% of the population in Spain lives in Madrid or Barcelona, so that pretty much makes it a minority in my head. Put another way, the majority (90%) of the Spanish population lives somewhere else than in Madrid or Barcelona.
Even if you count the greater metropolitan area (where I'm part of the Barcelona one myself, although I live 30 minutes away from the city), you only get up ~20% of the population living in either Madrid or Barcelona. Even then I'd say we're in minority compared to the people who don't live in either those "metropolitan" areas.
Even if you count the greater metropolitan area (where I'm part of the Barcelona one myself, although I live 30 minutes away from the city), you only get up ~20% of the population living in either Madrid or Barcelona. Even then I'd say we're in minority compared to the people who don't live in either those "metropolitan" areas.