Pilas DistrictPilas is a district of the Buenos Aires canton, in the Puntarenas province of Costa Rica.HistoryPilas was created on 20 January 1968 by Decreto 7. Segregated from Buenos Aires.GeographyPilas has an area of km² and an elevation of metres.DemographicsFor the 2011 census, Pilas had a population of inhabitants.