A study from the Mediterranean Migration Observatory maintains that the 2001 census recorded 762,191 persons residing in Greece without Greek citizenship, constituting around 7% of total population.
Un estudo do Observatorio Migratorio do Mediterráneo mantén que no ano 2001 residían no país sen a cidadanía grega 762.191 persoas, o que constitúe o 7% da poboación.