Arizona.
No state is bordered by both Colorado and Mississippi. Colorado is bordered by Wyoming to the north, Nebraska to the northeast, Kansas to the east, Oklahoma to the southeast, New Mexico to the south, Utah to the west, and Arizona to the southwest, at the Four Corners. Mississippi is bordered by Tennessee to the north; Alabama to the east; Arkansas across the Mississippi River; Louisiana to the west; and the Gulf of Mexico to the south.
The state of Illinois.
The state of Mississippi is east off the Mississippi River. Mississippi is bordered by the Mississippi River to the west.
Illinois is bordered by the Mississippi River on the west.
Nebraska
Illinois is bordered by the Mississippi River on the west.
Illinois is bordered by the Mississippi River on the west
The state of Wyoming is west of the Mississippi River.
There is one state in the United States bordered by a river on both sides. The state of Iowa has the Mississippi River on the east and the Missouri River on the west.
Kansas is bordered by Colorado on the west.
Both Nebraska and the northeast part of Kansas.
Mississippi river