Illinois (yettwanṭaq s tanglizt: ), d yiwen seg Yiwunak Yeddukklen, yezga-d deg ugafa (nord) n tmurt, ɣef yiri n ugelmim n Michigan. Tajumma-nnes 149.949 km2 (yikilumitren imkuẓen). Zedɣen-t 12.830.632 n yimezdaɣen. Tamaneɣt-nnes d Springfield, ma d tamdint-nnes tameqrant d Chicago.