Office of the State Treasurer - Illinois

The Northwest Territory was incorporated in 1787 and included all of present day Ohio, Indiana, Michigan, Illinois, and Wisconsin, and the Northeastern section of Minnesota. After Ohio was admitted into the Union in 1800, the remainder of the area fell under the Indiana Territory, which was further subdivided into the Michigan Territory (1805) and the Illinois Territory (1809). Throughout this period the treasurer oversaw the assets of the territory. This office continued under the Illinois Territory, and was enumerated in the original state constitution in 1818.