The Indian Boundary Line was the south boundary of a strip 20 miles wide, ceded to the U.S. in 1816 by the Potawatomi, Ottawa and Chippewa Indians, providing a canal route and free travel from Chicago to the Illinois River. This line extends southwest to the Kankakee River. It begins on the shore of Lake Michigan at a point which was 10 miles south of the mouth of the Chicago River. In 1834 it was made a State Road, marked with milestones. The north end of it survives in modern Chicago as State Street.
Blue Island is one of the oldest towns in Cook County.
The first settler, Thomas Courtney, came there in 1834. He was postmaster of Worth P.O. established there in 1838. In 1860 its name was changed to Blue Island which became the legal name of the village in 1872. Peter Barton came in 1837 and, in 1839, platted a town called Portland. Overlook with exceptional scenic view Toboggan slide and slopes for winter coasting.