El Rosario DistrictEl Rosario is a district of the Naranjo canton, in the Alajuela province of Costa Rica.HistoryEl Rosario was created on 14 January 1967 by Ley 4020. Segregated from San Miguel.GeographyEl Rosario has an area of km2 and an elevation of metres.DemographicsFor the 2011 census, El Rosario had a population of inhabitants.TransportationRoad transportationThe district is covered by the following road routes: National Route 1 National Route 715