Écija is a town belonging to the province of Seville, Spain. It is located in the Andalusian countryside, 85 km east of the city of Seville. According to the 2008 census, Écija has a total population of 40,100 inhabitants, ranking as the fifth most populous city in the province. The river Genil, the main tributary of the river Guadalquivir, runs through the urban area of the city.