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| Mayor | Richard M. Daley (to April 2011) |
| 2000 census population | 2,896,016 (3) |
| Male Population | 1,405,107 (48.5%) |
| Female Population | 1,490,909 (51.5%) |
| White Population | 1,215,315 (42.0%) |
| Black Population | 1,065,009 (36.8%) |
| American Indian and Alaska Native Population | 10,290 (0.4%) |
| Asian Population | 125,974 (4.3%) |
| Hispanic/Latino Population | 753,644 (26.0%). 2000 percent population 18 and over |
| Two or more races Population | 84,437 (2.9%) |
| Other race Population | 393,203 (13.6%) |
| 65 and over | 10.3% |
| Median age | 31.5 |
| 2005 population estimate (rank) | 2,842,518 (3) |
| Land area | 227 (square miles) |
| Avg. alt. in Highest | 672 (ft) |
| Avg. alt. in lowest | 578.5 (ft) |
| Avg. temp in Jan. | 22.4 (f) |
| Avg. temp in July | 75.1 (f) |
| Churches | Protestant: 850
Roman Catholic: 252
Jewish: 51 |
| Radio stations | AM: 21
FM: 37 |
| Television stations | 31 |
| Unemployed | 230,800 1 (4.9 1 %) |
| Per capita personal income (MSA) 2004 | 37,169 (dollar) |
| Chamber of Commerce | Chicagoland Chamber of Commerce, One IBM Plaza, 330 N. Wabash, Suite 2800, Chicago, IL 60611 |