| Metropolitan Area Residents |
| 1980: | 7,937,000 |
| 1990: | 8,066,000 |
| 2000: | 9,157,540 |
| Percent change, 1990–2000: | 11.1% |
| U.S. rank in 1990: | 3rd |
| U.S. rank in 2000: | 3rd |
| City Residents |
| 1980: | 81,293 |
| 1990: | 100,279 |
| 2000: | 142,990 |
| 2003 estimate: | 162,184 |
| Percent change, 1990–2000: | 42.6% |
| U.S. rank in 1990: | 201st (State rank: 3rd) |
| U.S. rank in 2000: | 147th (State rank: 3rd) |
| Density: | 3,711.5 people per square mile (2000) |
| Racial and ethnic characteristics | (2000) |
| White | 97,340 |
| Black or African American | 15,817 |
| American Indian and Alaska Native | 511 |
| Asian | 4,370 |
| Native Hawaiian and Pacific Islander | 47 |
| Hispanic or Latino (may be of any race) | 46,557 |
| Other | 20,762 |
| Percent of residents born in state: | 56.0% (2000) |
| Age characteristics | (2000) |
| Population under 5 years old | 15,095 |
| Population 5 to 9 years old | 13,256 |
| Population 10 to 14 years old | 10,873 |
| Population 15 to 19 years old | 10,042 |
| Population 20 to 24 years old | 10,625 |
| Population 25 to 34 years old | 27,746 |
| Population 35 to 44 years old | 23,635 |
| Population 45 to 54 years old | 15,111 |
| Population 55 to 59 years old | 4,498 |
| Population 60 to 64 years old | 3,179 |
| Population 65 to 74 years old | 4,488 |
| Population 75 to 84 years old | 3,133 |
| Population 85 years and older | 1,319 |
| Median age | 29.3 years |
| Births | (2002, Kane County) Total number: 8,299 |
| Deaths | (2002, Kane County) Total number: 2,571 (of which, 45 were infants under the age of 1 year) |
| Money income | (1999) |
| Per capita income | $22,131 |
| Median household income | $54,861 |
| Total households | 46,649 |
| Number of households with income of . . . | |
| less than $10,000 | 2,336 |
| $10,000 to $14,999 | 1,651 |
| $15,000 to $24,999 | 4,209 |
| $25,000 to $34,999 | 4,779 |
| $35,000 to $49,999 | 7,925 |
| $50,000 to $74,999 | 10,738 |
| $75,000 to $99,999 | 6,838 |
| $100,000 to $149,999 | 5,585 |
| $150,000 to $199,999 | 1,397 |
| $200,000 or more | 1,191 |
| Percent of families below poverty level: | 6.2% (24.7% of which were female householder families with related children under 5 years) |
| 2002 FBI Crime Index Total: | Not reported |
