(and largest city) Lisbon 38°46′N 9°9′W ﻿ / ﻿ 38.767°N 9.15°W ﻿ / 38.767; -9.15 Official language(s) Portuguese Recognised regional languages Mirandese Ethnic groups  (2007) 96.87% Portuguese and 3.13% legal immigrants ( Cape Verdeans , Brazilians , Ukrainians , Angolans , etc.) Demonym