Illinois and Kentucky border both the Mississippi and Ohio rivers.
Illinois and Kentucky. Illinois is north of the Ohio River and east of the Mississippi river. Kentucky is south of the Ohio River and east of the Mississippi River.(Missouri is on the west bank of the Mississippi and does not border the Ohio River.)
The Ohio River and Ohio River Valley boarder the southern part of Ohio.
Illinois and Kentucky. Illinois is north of the Ohio River and east of the Mississippi river. Kentucky is south of the Ohio River and east of the Mississippi River.(Missouri is on the west bank of the Mississippi and does not border the Ohio River.)
The Ohio River is a tributary of the Mississippi and flows into it at the triple boundary of the states of Missouri, Illinois, and Kentucky.
The Ohio River creates the southern borders of Indiana, Illinois, and Ohio where it meets the Mississippi River.
Indiana, Ohio, and Illinois
At Cairo, Illinois, the Ohio joins the Mississippi. The three states that have borders there are Illinois (to the NE), Kentucky (to the SE) and Missouri (to the W).
Ohio River
St. Paul, Minnesota and Baton Rouge, Louisiana
New Hampshire and Ohio both lie to the east of the Mississippi river. Missouri and Oklahoma lie to the west.
The confluence of the Ohio and Mississippi is essentially the Missouri-Illinois-Kentucky "triple point".
The Ohio River flows into the Mississippi River at Cairo, Illinois. The Ohio divides Illinois to the north from Kentucky to the south, and on the west bank of the Mississippi is the state of Missouri.