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Nearly the entire western boundary of Illinois is the Mississippi River, except for a few areas where the river has changed course. Illinois' southeastern and southern boundary is along the Wabash River and the Ohio River, whereas its northern boundary and much of its eastern boundary are straight survey (longitudinal and latitudinal) lines ...
Southern Illinois is a region of the U.S. state of Illinois comprising the southern third of the state, principally south of Interstate 70.Part of downstate Illinois, it is bordered by the two most voluminous rivers in the United States: the Mississippi below its connection with the Missouri River to the west and the Ohio River to the east and south, with the tributary Wabash River, extending ...
Illinois Route 13 (IL 13) is a major east–west state route in southern Illinois. Illinois 13 has its western terminus at Centreville at Illinois Route 157 and its eastern terminus at the Kentucky state line and the Ohio River, at Kentucky Route 56. This is a distance of 151.54 miles (243.88 km). [1]
The 16 counties of Forgottonia. Fandon is the white dot. Forgottonia on U.S. map. Forgottonia (/ ˈ f ɔːr ɡ ɒ ˌ t oʊ n i ə /), also spelled Forgotonia, is the name given to a 16-county region in Western Illinois in the late 1960s and early 1970s.
In 1957, area code 815 was split for the assignment of area code 309 to western central Illinois. No further changes took place for 33 years. In 1989, area code 708 was created for all of the suburbs in the Chicago metropolitan area while the city of Chicago kept the original 312. Area codes 847 (northern suburbs) and 630 (western suburbs) were ...
Jefferson County contains the Mount Vernon, Illinois micropolitan area. It is located in the southern portion known locally as "Little Egypt". The western border of the county adjoins the Greater St. Louis consolidated metropolitan statistical area, the Metro-East region, and the St. Louis commuter region and market and viewing area.
According to the 2020 United States census, Illinois is the 6th most populous state with 12,812,508 inhabitants but the 24th largest by land area spanning 55,499.0 square miles (143,742 km 2) of land. [1] Illinois is divided into 102 counties and, as of 2020, contained 1,300 municipalities consisting of cities, towns, and villages.
The Shawnee Hills are a region within the larger Interior Low Plateaus physiographic province located in southern Illinois, southern Indiana, and western Kentucky. [1] In Illinois it rests mainly in an east–west arc roughly following the outline of the southern end of the Illinois Basin. Whereas Mississippian and Pennsylvanian Age rock layers ...