Zaruma Canton is a canton of Ecuador, located in the El Oro Province. Its capital is the town of Zaruma. Its population at the 2001 census was 23,407.DemographicsEthnic groups as of the Ecuadorian census of 2010: Mestizo 83.6%White 7.4%Montubio 6.6%Afro-Ecuadorian 2.1%Indigenous 0.2%Other 0.2%