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The Mississippi River at Cairo, Illinois is the lowest point, at 279 feet (85 m). Average elevation is 600 feet (180 m) above sea level. McLean County is the largest county in terms of land area (1,184 sq mi.), while Cook County is the largest county in terms of population (5,275,541 as of 2020), and the largest when land and water area are ...
The elevation of a geographic area may be stated in several ways. These include: The maximum elevation of the area (high point); [a] The minimum elevation of the area (low point); [b] The arithmetic mean elevation of the area (statistical mean elevation); [c] The median elevation of the area (statistical 50% elevation); [d] and; The elevation ...
At 279 feet (85 m) above sea level, [66] the lowest elevation point in the state is located near Cairo and the confluence of the Ohio and Mississippi Rivers. Illinois has three major geographical divisions.
At 279 feet (85 m) in elevation, Fort Defiance Point is also Illinois' lowest point. [1] Formerly a state park, it has been owned and maintained by the city of Cairo since the 1990s. The Illinois Department of Natural Resources assumed control of Fort Defiance on July 31, 2014, with the goal of returning it to state park status. [2]
The lowest point in the state of Illinois is located in Cairo at the Mississippi River. According to the 2021 census gazetteer files, Cairo has a total area of 9.11 square miles (23.59 km 2 ), of which 6.99 square miles (18.10 km 2 ) (or 76.72%) is land and 2.12 square miles (5.49 km 2 ) (or 23.28%) is water.
The course forms the northern borders of West Virginia and Kentucky; and the southern borders of Ohio, Indiana and Illinois, until it joins the Mississippi River at the city of Cairo, Illinois. Where the Ohio joins the Mississippi is the lowest elevation in the state of Illinois, at 315 feet (96 m).
Highest elevation. 850 ft (259 m) Lowest elevation. 590 ft (180 m) Population • Total. 379,441 ... On the Illinois side, between Rock Island, Moline, and East ...
The Cairo Mississippi River Bridge near the confluence of the Mississippi and Ohio Rivers at Cairo, the lowest elevation in the state. The bridge was built in 1929 by the American Bridge Company and the Missouri Valley Bridge & Iron Co. Image credit: Nick Jordan (photographer), Fredddie (upload) (from Portal:Illinois/Selected picture)