Northern Illinois Data by Subject Demographic Characteristics - Households by Household Size Select an Area State of Illinois   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 Household Size 1980 1990 2000 Change 1980-1990 Change 1990-2000 Number Percent Number Percent Total households 4,045,374 4,202,240 4,592,740 156,866 3.9 390,500 9.3   1 person 970,057 1,081,113 1,228,282 111,056 11.4 147,169 13.6   2 persons 1,213,794 1,278,487 1,404,072 64,693 5.3 125,585 9.8   3 - 4 persons 1,296,401 1,343,242 1,395,301 46,841 3.6 52,059 3.9   5 or more persons 565,122 499,398 565,085 -65,724 -11.6 65,687 13.2 Persons per household (Mean) 2.76 2.65 2.63   SOURCE: U.S. Census Bureau, 1980, 1990, 2000. ::: click here to print this page :::