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 Back to: IL, United States.  
County Population: 258,941 
County Houses: 108,942 
Land area: 725.0 sq. mi. 
Water area: 15.3 sq. mi. 
Industries providing employment: Educational,health and social services (21.9%), Manufacturing (16.1%), Retail trade (11.8%). 
Races in Madison County: 
- White Non-Hispanic (89.3%)
 
- Black (7.3%)
 
- Hispanic (1.5%)
 
- Two or more races (1.1%)
 
- American Indian (0.7%)
 
 (Total can be greater than 100% because Hispanics could be counted in other races)  
 
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