Yilan County, alternately spelled I-lan, is a county in northeastern Taiwan. Yilan is the northernmost county on the island of Taiwan, with a population 450,031. Its seat is located in Yilan City. Before the Han Chinese Wu Sha led his company into large-scale reclamation in today’s Yilan in 1787, the area was mainly inhabited by the indigenous Kavalan people. During the Japanese rule, much of the present day Yilan County was part of Japan within its Taihoku Prefecture.