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Macon County, Illinois

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Macon County, Illinois
CountyMacon County
StateIllinois
Founded1829
SeatDecatur
Largest cityDecatur
Area total sq mi586
Area land sq mi581
Area water sq mi4.6
Population as of2020
Population total103,998
Population density sq miauto
Time zoneCentral
Named forNathaniel Macon
District15th

Macon County, Illinois. Macon County is a county located in the central part of the U.S. state of Illinois. Established in 1829 from portions of Shelby County, its county seat and largest city is Decatur. The county is part of the Decatur Metropolitan Statistical Area and is named for Nathaniel Macon, a prominent American Revolutionary War figure and United States Senator from North Carolina.

History

The area that became Macon County was originally inhabited by the Illinois and Kickapoo peoples before European-American settlement. Following the Treaty of Edwardsville in 1819, the land was opened for pioneers. The county was officially organized in 1829, with its early economy centered on agriculture and the National Road. The arrival of the Illinois Central Railroad and the Wabash Railroad in the mid-19th century spurred growth, transforming Decatur into a major transportation and industrial hub. Significant historical events include the Lincoln-Douglas debates of 1858, where Abraham Lincoln spoke in Decatur, and the county's strong support for the Union during the American Civil War. The 20th century saw the rise of major industries like the A.E. Staley Manufacturing Company and Caterpillar Inc., solidifying its industrial character.

Geography

According to the U.S. Census Bureau, the county has a total area of 586 square miles, of which 581 square miles is land and 4.6 square miles is water. The landscape is predominantly flat, characteristic of the Springfield Plain subsection of the Central Till Plains. Major waterways include the Sangamon River, which flows through the northern part of the county, and Lake Decatur, a large reservoir created by damming the Sangamon River in 1922. The county is bordered by De Witt County to the north, Piatt County to the northeast, Moultrie County to the east, Shelby County to the south, and Christian County to the west.

Demographics

As of the 2020 United States census, the population was 103,998. The racial makeup was approximately 76.1% White, 16.1% African American, 0.3% American Indian, 1.1% Asian, and 4.2% identifying as two or more races. Hispanic or Latino residents of any race comprised 3.2% of the population. The population density was about 179 people per square mile. The largest population center is Decatur, which contains the majority of the county's residents, with smaller communities including Mount Zion, Forsyth, and Warrensburg.

Economy

Historically anchored in agriculture and manufacturing, Macon County's economy has been dominated by agribusiness and heavy industry. Major employers have included Archer Daniels Midland (ADM), a global food processing and commodities trading corporation headquartered in Decatur, Caterpillar Inc., and Tate & Lyle. The presence of Richland Community College and Millikin University also contributes to the economic and educational landscape. While manufacturing remains significant, the economy has diversified into sectors such as healthcare, led by Decatur Memorial Hospital and HSHS St. Mary's Hospital, logistics, and retail. The county is a major center for soybean and corn processing.

Government

Macon County operates under a commission form of government. The governing body is the Macon County Board, consisting of 21 members elected from districts. Elected county-wide officials include the County Sheriff, County Clerk, Treasurer, and States Attorney. The county is part of the 15th Congressional District, represented in the U.S. House by Mary Miller. At the state level, portions of the county lie within the 48th Senate District and the 96th, 101st, and 102nd House Districts.

Education

Primary and secondary education is provided by several public school districts, including Decatur Public Schools District 61, Maroa-Forsyth Community Unit School District 2, and Warrensburg-Latham Community Unit School District 11. Higher education institutions are key features, most notably Millikin University, a private university in Decatur founded in 1901, and Richland Community College, a public community college. The county is also served by the Decatur Public Library, part of the Heritage Trail Library System.

Transportation

Macon County is a regional transportation hub. Major highways include Interstate 72, U.S. Route 36, Illinois Route 48, and Illinois Route 105. Rail service is provided by Norfolk Southern Railway and Canadian National Railway, continuing the county's historic rail legacy. Public air travel is served by Decatur Airport, which offers general aviation and commercial service via American Eagle. Public transit within Decatur is operated by the Decatur Public Transit System.

Category:Illinois counties Category:Macon County, Illinois Category:1829 establishments in Illinois