40°N98°W / 40°N 98°W /40; -98
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TheCentral United States is sometimes conceived as between theEastern andWestern as part of a three-region model, roughly coincident with theU.S. Census Bureau's definition of theMidwestern United States plus the western and central portions of the U.S. Census's definition of theSouthern United States. The Central States are typically considered to consist ofNorth Dakota,South Dakota,Nebraska,Kansas,Oklahoma,Texas,Minnesota,Iowa,Missouri,Arkansas,Louisiana,Wisconsin,Illinois,Michigan,Indiana,Ohio,Kentucky,Tennessee,West Virginia,Mississippi andAlabama.[citation needed]
Chicago is the area's largest city and metropolitan area; other large cities with large metropolitan areas includeNew Orleans,Houston,Dallas,Fort Worth,San Antonio,Austin,Oklahoma City,Tulsa,Kansas City,Kansas andKansas City,Missouri,Topeka,Wichita,Omaha, Nebraska andLincoln,Minneapolis andSt. Paul,Madison andMilwaukee,St. Louis,Louisville,Lexington,Detroit andGrand Rapids,Cincinnati,Cleveland,Columbus,Toledo,Dayton,Rockford,Peoria,Indianapolis,Evansville,Fort Wayne andSouth Bend.[citation needed]
Four of nineCensus Bureau Divisions have names containing "Central", though they are not grouped as a region. They include 20 states and 39.45% of the U.S. population as of July 1, 2007.[1]
Almost all of the area is in theGulf of Mexicodrainage basin and most of that is in theMississippi basin. Small waterways near the Great Lakes drain into theGreat Lakes, and eventually theSt. Lawrence River. TheRed River Valley is centered on theNorth Dakota-Minnesota border and drains toHudson Bay. Floods have been a problem for the region during the 20th and early 21st century.[2]
TheCentral Time Zone includes portions of theFlorida panhandle, upper portions ofMichigan, parts ofIndiana, westernKentucky, westernTennessee, all ofTexas exceptEl Paso, and extends to the westernmost fringes ofGreat Plains states.[citation needed]
Different organizations define the central regions of the United States in a variety of ways:
The geographic center of the 48contiguous or conterminous United States, determined in a 1918 survey, is located at , about 2.6 miles (4.2 km) northwest of the center ofLebanon, Kansas, approximately 12 miles (19 km) south of theKansas–Nebraska border.[3] The determination is accurate to about 20 miles (32 km).[4]
While any measurement of the exact center of a land mass will always be imprecise due to changing shorelines and other factors, the NGS coordinates are recognized in a historical marker in a small park at the intersection of AA Road andK-191. It is accessible by a turn-off fromU.S. Route 281.
The actual center is about a half mile away in the center of a former hog farm.