At an early period in time when people moved from Changchow and Ch'uanchow in Fukien Province to Taiwan, the western plain was mostly comprised of people from Ch'uanchow while people from Changchow were the major inhabitants along the borders of Ilan County. Only Suao, located within Ilan County, was developed by people from Ch'uanchow.
台灣早期移民來自福建漳、泉二州，在西部平原以泉州人為主，在宜蘭縣境，則是以漳州人為主力；縣內唯獨蘇澳是由泉州人開發的。