Northern Illinois Data by Subject Demographic Characteristics - Households by Household Size Select an Area Will County, 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 103,071 116,933 167,602 13,862 13.4 50,669 43.3   1 person 17,830 20,679 29,795 2,849 16.0 9,116 44.1   2 persons 27,264 31,968 48,275 4,704 17.3 16,307 51.0   3 - 4 persons 39,337 45,758 63,552 6,421 16.3 17,794 38.9   5 or more persons 18,640 18,528 25,980 -112 -0.6 7,452 40.2 Persons per household (Mean) 3.07 2.48 2.94   SOURCE: U.S. Census Bureau, 1980, 1990, 2000. ::: click here to print this page :::