Northern Illinois Data by Subject Demographic Characteristics - Households by Household Size Select an Area Lake 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 139,715 173,966 216,484 34,251 24.5 42,518 24.4   1 person 23,681 32,207 42,485 8,526 36.0 10,278 31.9   2 persons 40,258 53,162 64,724 12,904 32.1 11,562 21.7   3 - 4 persons 53,600 66,139 77,620 12,539 23.4 11,481 17.4   5 or more persons 22,176 22,458 31,655 282 1.3 9,197 41.0 Persons per household (Mean) 2.98 2.49 2.88   SOURCE: U.S. Census Bureau, 1980, 1990, 2000. ::: click here to print this page :::