The proportion of people in Ilan who speak Taiwanese to their brothers and sisters is particularly high, over 86 %, much higher than Taipei's 64 %, Kaohsiung's 77 %, and Taichung's 69 %.
宜蘭人與兄弟姊妹講台語的比例特別高，達八成六；比台北的六成四、高雄的七成七，台中的六成九都高得多。