León is a city and municipality of Spain, capital of the province of León, part of the autonomous community of Castile and León, in the northw…León is a city and municipality of Spain, capital of the province of León, part of the autonomous community of Castile and León, in the northwest of the Iberian Peninsula. It has a population of 124,303, by far the largest municipality in the province. The population of the metropolitan area, including the neighbouring San Andrés del Rabanedo and other smaller municipalities, accounts for around 200,000 inhabitants.