Montilla is a town and municipality of Spain, located in the autonomous community of Andalusia. As of 2017, the town had a population of 23…Montilla is a town and municipality of Spain, located in the autonomous community of Andalusia. As of 2017, the town had a population of 23,209, which makes it the fourth most populated municipality of the Province of Córdoba. It lies 32 miles south of the provincial capital, Córdoba.