Yes and it is bordered by 4 bodies of water.
Illinois is bordered by Lake Michigan to the northeast.
Lake Michigan, Lake Superior, and the Mississippi River border Wisconsin.
A plain bordered by a large body of water is called a coastal plain.
Florida and Michigan are two examples of peninsular States. They are both bordered on three sides by water. Michigan is actually composed of two separate peninsulas. Peninsula means a body of land that is nearly an island. "Insula" means island. Several other states have some peninsular features, but none are so prominent as Florida and Michigan.
The Atlantic Ocean is somewhat closer than the Pacific Ocean, but the body of water bordered by Chicago is Lake Michigan. Google just came out with this new thing called "Google Maps" in 2005. I bet Chicago is on there.
Gulf of Mexico
Balitc Sea
Nkem
Body of water east of the aztec empire
Blatic sea
the black seablack sea
Caspian sea