Northern Illinois Data by Subject
Demographic Characteristics - Population by Age.


Select an Area
Quad Cities, Illinois - Iowa MSA*
* The Quad Cities, Illinois - Iowa Metropolitan Statistical Area (MSA) consists of Rock Island and Henry counties in Illinois,and Scott county in Iowa.
  Boone County
  Bureau County
  Carroll County
  Cook County
  DeKalb County
  DuPage County
  Grundy County
  Henry County
  JoDaviess County
  Kane County
  Kankakee County
  Kendall County
  Lake County
  LaSalle County
  Lee County
  McHenry County
  Mercer County
  Ogle County
  Putnam County
  Rock Island County
  Stephenson County
  Whiteside County
  Will County
  Winnebago County
  Chicago PMSA
  Quad Cities MSA
  Rockford MSA
  State of Illinois

Population by Age
1980
1990
2000
Change
1980-1990
Change
1990-2000
 
Number
Percent
Number
Percent
Number
Percent
Number
Percent
Number
Percent
Total Population 383,958 100.0 350,861 100.0 359,062 100.0 -33,097 -8.6 8,201 2.3
 Under 5 yrs. 31,009 8.1 25,260 7.2 23,525 6.6 -5,749 -18.5 -1,735 -6.9
 5 to 9 yrs. 29,481 7.7 27,029 7.7 24,647 6.9 -2,452 -8.3 -2,382 -8.8
 10 to 14 yrs. 31,997 8.3 26,723 7.6 26,198 7.3 -5,274 -16.5 -525 -2.0
 15 to 19 yrs. 35,361 9.2 24,620 7.0 26,530 7.4 -10,741 -30.4 1,910 7.8
 20 to 24 yrs. 35,710 9.3 22,977 6.5 23,084 6.4 -12,733 -35.7 107 0.5
 25 to 29 yrs. 33,321 8.7 26,214 7.5 22,587 6.3 -7,107 -21.3 -3,627 -13.8
 30 to 34 yrs. 30,525 8.0 28,695 8.2 23,203 6.5 -1,830 -6.0 -5,492 -19.1
 35 to 44 yrs. 43,243 11.3 53,228 15.2 55,145 15.4 9,985 23.1 1,917 3.6
 45 to 54 yrs. 37,396 9.7 37,019 10.6 51,116 14.2 -377 -1.0 14,097 38.1
 55 to 59 yrs. 18,437 4.8 15,410 4.4 18,625 5.2 -3,027 -16.4 3,215 20.9
 60 to 64 yrs. 16,469 4.3 15,767 4.5 14,820 4.1 -702 -4.3 -947 -6.0
 65 to 74 yrs. 24,547 6.4 27,414 7.8 25,068 7.0 2,867 11.7 -2,346 -8.6
 75 to 84 yrs. 12,456 3.2 15,171 4.3 17,967 5.0 2,715 21.8 2,796 18.4
 85 yrs & over 4,006 1.0 5,334 1.5 6,547 1.8 1,328 33.2 1,213 22.7
  Median Age 29.2 34.0 36.9

SOURCE: U.S. Census Bureau, 2000.

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