POPULATION: 3,009,530
 POPULATION CHANGE 1980-86: 0.1%
 BLACK POPULATION: 39.8%
 HISPANIC POPULATION: 14.1%
 POPULATION AGE 65 AND OVER: 11.4%
 INCOME PER CAPITA: $9,642 (1985)
 PERSONS BELOW POVERTY LEVEL: 20.3%
 UNEMPLOYMENT RATE: 9.3%
 BIRTH RATE: 18.0 per 1,000 population
 CRIME RATE: 9,246 per 100,000 population
 POLICE PROTECTION: 40 officers per 10,000 population
 COLLEGE EDUCATION: 13.8 percent with 4 years or more
 JANUARY MEAN TEMPERATURE: 21.4@ Fahrenheit
 JULY MEAN TEMPERATURE: 73.0@ Fahrenheit
 ANNUAL PRECIPITATION: 33.3 inches
 LAND AREA: 228.1 square miles; 590.5 square kilometers 
 LATITUDE: 41@50'N  LONGITUDE: 87@45'W
 AREA CODE: 312  TIME ZONE: Central