| Yilan County | |
| Type: | Single-member |
| Parl Name: | Legislative Yuan |
| Region Label: | District |
| Region: | Yilan County |
| Elects Howmany: | 1 |
| Electorate: | 373,510 |
| Year: | 2008 |
Yilan County is represented in the Legislative Yuan since 2008 by one at-large single-member constituency (Yilan County Constituency,). With an electorate of 357,077 persons in 2016, it is the least-represented constituency since the split of Hsinchu County Constituency.
| Election | Yilan County | ||
|---|---|---|---|
| 2008 7th | Lin Chien-jung | ||
| 2012 8th | Chen Ou-po | ||
| 2016 9th | |||
| 2020 10th | |||
| 2024 11th | Chen Jun-yu | ||