Tenerife is one of the seven Canary Islands . It is part of the province of Santa Cruz de Tenerife , the capital of the province being on the island . According to INE data of 1 January 2010 , Tenerife has the largest population of the seven Canary Islands and Spain with 906,854 registered inhabitants , of whom about 25 % ( 220,902 ) live in the capital , Santa Cruz de Tenerife , and nearly 50 % ( 424,200 ) in the metropolitan area of Santa Cruz â `` La Laguna .