Tallest Mountains in Illinois

Tallest Mountains in Illinois

While Illinois is better known for its vast prairies and urban skyline than its rugged terrain, the “Prairie State” holds surprising geographic diversity for those willing to look closely. Most of the state’s highest elevations are concentrated in the rolling driftless area of the northwest and the Shawnee Hills to the south. From the private plateau of Charles Mound to the scenic ridges overlooking the Mississippi River, these high points offer a unique perspective on the Midwestern landscape. Whether you are a dedicated “highpointer” or just a curious traveler, the following list details the tallest natural peaks and ridges that define the Illinois horizon.