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Madison County, Illinois
Madison County Courthouse, Edwardsville
Location within the U.S. state of Illinois
Illinois's location within the U.S.
Founded	September 14, 1812
Named for	James Madison
Seat	Edwardsville
Largest city	Edwardsville
Area
• Total	741 sq mi (1,919 km2)
• Land	716 sq mi (1,854 km2)
• Water	25 sq mi (65 km2), 3.4%
Population (est.)
• (2017)	265,428
• Density	376/sq mi (145/km2)
Congressional districts	12th, 13th, 15th
Time zone	Central: UTC−6/−5
Website	www.co.madison.il.us

Madison County is a county in the U.S. state of Illinois. According to the 2010 census, it had a population of 269,282.^[1] The county seat is Edwardsville,^[2] and its largest city is Granite City.

Madison County is part of the Metro-East region of the St. Louis, MO-IL Metropolitan Statistical Area. The pre-Columbian city of Cahokia Mounds a World Heritage Site was located near Collinsville. Edwardsville is home to Southern Illinois University Edwardsville. To the north, Alton is known for its abolitionist and American Civil War-era history. It is also the home of Southern Illinois University Dental School. Godfrey, the village named for Captain Benjamin Godfrey, offers Lewis and Clark Community College formerly the Monticello Female Seminary.

History

Madison County was established on September 14, 1812. It was formed from parts of Randolph and St. Clair counties and named for President James Madison.^[3] At the time of its formation, Madison County included all of the modern State of Illinois north of St. Louis, as well as all of Wisconsin, part of Minnesota, and Michigan's Upper Peninsula.

In the late 19th century, Madison County became an industrial region, and in the 20th century was known first for Graniteware, and later for its steel mills, oil refineries, and other heavy industries. The county had a large working population, and the county and surrounding area was a center of strength for the Democratic Party.

Industrial restructuring cost many jobs and reduced the population. The county now is part of semi-rural, sparsely populated east of the St. Louis metropolitan area (nicknamed "Metro East"), as is neighboring St. Clair County.

In 2009, the EPA issued an air pollution report that ranked Madison County as the county with the second-highest cancer risk in the country due to air pollution, second only to Los Angeles County, California.

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  Madison County between its creation in 1812 and 1815, extending north to Lake Superior and the border with Rupert's Land
  

  
  

  
  


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  Madison County between 1815 and 1817
  

  
  

  
  


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  Madison County between 1817 and 1821
  

  
  

  
  


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  Madison County between 1821 and 1825
  

  
  

  
  


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  Between 1825 and 1829, Madison included a northern salient that was split off to form part of Macoupin County.
  

  
  

  
  


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  In 1829, Madison returned to its 1821 borders.
  

  
  

  
  


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  In 1843, a small amount of land was transferred to Bond County, reducing Madison to its current size.
  

  
  

  
  

Geography

According to the U.S. Census Bureau, the county has a total area of 741 square miles (1,920 km²), of which 716 square miles (1,850 km²) is land and 25 square miles (65 km²) (3.4%) is water.^[4] Madison County is on the Mississippi River, while the other major body of water is Horseshoe Lake.

Climate and weather

In recent years, average temperatures in the county seat of Edwardsville have ranged from a low of 19 °F (−7 °C) in January to a high of 90 °F (32 °C) in July, although a record low of −27 °F (−33 °C) was recorded in January 1977 and a record high of 114 °F (46 °C) was recorded in July 2012. Average monthly precipitation ranged from 1.99 inches (51 mm) in January to 4.24 inches (108 mm) in May.^[5] Climate Zone 4A per the International Energy Conservation Code.

Adjacent counties and city

Transportation

Madison County Transit serves the county with 25 bus routes and 85 miles (137 km) of bike trails.

Major highways

Demographics

As of the 2010 census, there were 269,282 people, 108,094 households, and 71,756 families residing in the county.^[11] The population density was 376.3 inhabitants per square mile (145.3/km²). There were 117,106 housing units at an average density of 163.7 per square mile (63.2/km²).^[4] The racial makeup of the county was 88.2% white, 7.9% black or African American, 0.8% Asian, 0.2% American Indian, 0.9% from other races, and 1.8% from two or more races. Those of Hispanic or Latino origin made up 2.7% of the population.^[11] In terms of ancestry, 32.7% were German, 14.9% were Irish, 10.5% were English, 7.5% were American, and 5.7% were Italian.^[12]

Of the 108,094 households, 31.4% had children under the age of 18 living with them, 49.3% were married couples living together, 12.2% had a female householder with no husband present, 33.6% were non-families, and 26.8% of all households were made up of individuals. The average household size was 2.46 and the average family size was 2.98. The median age was 38.6 years.^[11]

The median income for a household in the county was $51,941 and the median income for a family was $64,630. Males had a median income of $50,355 versus $35,543 for females. The per capita income for the county was $26,127. About 9.1% of families and 12.9% of the population were below the poverty line, including 19.3% of those under age 18 and 6.6% of those age 65 or over.^[13]

Communities

Map of Madison County, Illinois

Cities

Villages

Census-designated places

• Holiday Shores


• Mitchell


• Rosewood Heights

Other unincorporated communities

Townships

Madison County is divided into twenty-four townships:

Politics

Like much of southern Illinois, Madison County was a predominantly Democratic area for much of its history, but in recent elections has been moving towards the Republicans. Mitt Romney narrowly carried the county in the 2012 presidential election, becoming the first Republican presidential nominee to do so since 1984. In 2016, Donald Trump carried the largest share of the vote for any presidential candidate since 1972. The county also supported the Republican candidates for governor in 2010 and 2014.

See also

• National Register of Historic Places listings in Madison County, Illinois


• The Invincible Thieves

References

External links

• Madison County website


• A History of Madison County Illinois


• Madison Historical: The Online Encyclopedia and Digital Archive for Madison County, Illinois

Coordinates: 38°50′N 89°55′W / 38.83°N 89.91°W / 38.83; -89.91