
Southwestern Illinois Demographics
Madison and St. Clair counties remain the second most populous region in the State of Illinois with a combined population of 539,338 in 2010. Median household income continues to rise for area residents, jumping 24.6 percent in the last decade. Per capita income is also on the rise, up 29 percent since 2000. Southwestern Illinois also continues to make gains in educational attainment. The percentage of individuals earning a high school diploma or higher has increased from 82.6 percent in 2000 to 88.4 percent in 2010, and the percentage earning a bachelor's degree or higher is 23.5 percent for 2010.
St. Louis Metropolitan Area Demographics
Additional information about the demographics
of the St. Louis region can be found on the website for the St.
Louis Regional Chamber and Growth Association.
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| SOUTHWESTERN ILLINOIS DEMOGRAPHICS |
| Population |
|
2000 |
|
2010
|
| Total Population |
| Madison County |
|
258,941 |
|
269,282 |
| St. Clair County |
|
256,082 |
|
270,056 |
| Southwestern Illinois |
|
515,023 |
|
539,338 |
| |
|
|
|
|
| Population by Age |
| Under 18 Years |
| Madison County |
|
64,437 |
|
61,127 |
| St. Clair County |
|
70,925 |
|
68,594 |
| Southwestern Illinois |
|
135,362 |
|
129,721 |
| |
|
|
|
|
| 65 Years and Over |
| Madison County |
|
36,923 |
|
38,507 |
| St. Clair County |
|
33,709 |
|
33,757 |
| Southwestern Illinois |
|
70,632 |
|
72,264 |
| |
|
|
|
|
| Median Age |
| Madison County |
|
36.9 |
|
37.4 |
| St. Clair County |
|
35.3 |
|
35.7 |
| Southwestern Illinois |
|
36.1 |
|
36.5 |
| |
|
|
|
|
| Income |
| Median Household Income (dollars) |
| Madison County |
|
41,541 |
|
51,941 |
| St. Clair County |
|
39,148 |
|
48,562 |
| Southwestern Illinois |
|
40,345 |
|
50,252 |
| |
|
|
|
|
| Per Capita Income (dollars) |
| Madison County |
|
20,509 |
|
26,127 |
| St. Clair County |
|
18,932 |
|
24,770 |
| Southwestern Illinois |
|
19,721 |
|
25,449 |
| |
|
|
|
|
| Educational Attainment (Age
25+) |
| % High School Graduate or Higher |
| Madison County |
|
84.3 |
|
89.4 |
| St. Clair County |
|
80.9 |
|
87.4 |
| Southwestern Illinois |
|
82.6 |
|
88.4 |
| |
|
|
|
|
| Percent Bachelor's Degree or Higher |
| Madison County |
|
19.2 |
|
23.0 |
| St. Clair County |
|
19.3 |
|
23.9 |
| Southwestern Illinois |
|
19.3 |
|
23.5 |
| |
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| Source: U.S. Census Bureau |
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