Mississippi River
the Mississippi River
The Mississippi River forms the western border of Illinois.
Mississippi River
Mississippi.
Mississippi river
Illinois is bordered by the Mississippi River on the west.
The Mississippi River
the Mississippi river
The Mississippi River
Illinois is bordered by the Mississippi River on the west
Peoria, IL is east of the Mississippi River which serves as the western border of the state of Illnois.
Starting in western Pennsylvania, the Ohio River borders Ohio, West Virginia, Kentucky, Indiana, and Illinois. The Ohio River does not border 44 States.
The Illinois River is entirely contained within the State of Illinois.