Language Spoken At Home in Cook County
*Base on 2012 Data
| Population 5 years and over | 4,854,438 | 100% |
| English only | 3,185,673 | 65.6% |
| Language other than English | 1,668,765 | 34.4% |
| Speak English less than very well | 743,237 | 15.3% |
| Spanish | 988,518 | 20.4% |
| Speak English less than very well | 454,659 | 9.4% |
| Other Indo-European languages | 418,642 | 8.6% |
| Speak English less than very well | 177,334 | 3.7% |
| Asian and Pacific Islander languages | 183,352 | 3.8% |
| Speak English less than very well | 85,106 | 1.8% |
| Other languages | 78,253 | 1.6% |
| Speak English less than very well | 26,138 | 0.5% |
Ancestry in Cook County
*Base on 2012 Data
| Total population | 5,197,677 | 100% |
| American | 97,639 | 1.9% |
| Arab | 54,805 | 1.1% |
| Czech | 47,046 | 0.9% |
| Danish | 14,826 | 0.3% |
| Dutch | 46,167 | 0.9% |
| English | 164,368 | 3.2% |
| French (except Basque) | 60,984 | 1.2% |
| French Canadian | 10,039 | 0.2% |
| German | 566,110 | 10.9% |
| Greek | 53,415 | 1.0% |
| Hungarian | 21,391 | 0.4% |
| Irish | 515,584 | 9.9% |
| Italian | 304,133 | 5.9% |
| Lithuanian | 39,469 | 0.8% |
| Norwegian | 41,641 | 0.8% |
| Polish | 472,317 | 9.1% |
| Portuguese | 2,369 | 0.0% |
| Russian | 70,532 | 1.4% |
| Scotch-Irish | 17,308 | 0.3% |
| Scottish | 37,663 | 0.7% |
| Slovak | 14,176 | 0.3% |
| Subsaharan African | 48,421 | 0.9% |
| Swedish | 76,925 | 1.5% |
| Swiss | 7,944 | 0.2% |
| Ukrainian | 30,489 | 0.6% |
| Welsh | 12,928 | 0.2% |
| West Indian (excluding Hispanic origin groups) | 21,897 | 0.4% |
Households By Type in Cook County
*Base on 2012 Data
| Total households | 1,933,670 | 100% |
| Family households (families) | 1,189,321 | 61.5% |
| With own children under 18 years | 546,668 | 28.3% |
| Married-couple family | 799,030 | 41.3% |
| With own children under 18 years | 358,907 | 18.6% |
| Male householder, no wife present, family | 95,395 | 4.9% |
| With own children under 18 years | 38,796 | 2.0% |
| Female householder, no husband present, family | 294,896 | 15.3% |
| With own children under 18 years | 148,965 | 7.7% |
| Nonfamily households | 744,349 | 38.5% |
| Householder living alone | 619,659 | 32.0% |
| 65 years and over | 190,211 | 9.8% |
| Households with one or more people under 18 years | 619,822 | 32.1% |
| Households with one or more people 65 years and over | 456,720 | 23.6% |
| Average household size | 3 | 0% |
| Average family size | 3 | 0% |
Relationship in Cook County
*Base on 2012 Data
| Population in households | 5,114,489 | 100% |
| Householder | 1,933,670 | 37.8% |
| Spouse | 798,103 | 15.6% |
| Child | 1,622,118 | 31.7% |
| Other relatives | 477,446 | 9.3% |
| Nonrelatives | 283,152 | 5.5% |
| Unmarried partner | 110,629 | 2.2% |
Marital Status in Cook County
*Base on 2012 Data
| Males 15 years and over | 2,001,912 | 100% |
| Never married | 864,513 | 43.2% |
| Now married, except separated | 903,394 | 45.1% |
| Separated | 36,262 | 1.8% |
| Widowed | 50,649 | 2.5% |
| Divorced | 147,094 | 7.3% |
| Females 15 years and over | 2,182,613 | 100% |
| Never married | 823,002 | 37.7% |
| Now married, except separated | 872,456 | 40.0% |
| Separated | 54,863 | 2.5% |
| Widowed | 206,360 | 9.5% |
| Divorced | 225,932 | 10.4% |
Fertility in Cook County
*Base on 2012 Data
| Number of women 15 to 50 years old who had a birth in the past 12 months | 73,956 | 100% |
| Unmarried women (widowed, divorced, and never married) | 27,778 | 37.6% |
| Per 1,000 unmarried women | 34 | 0% |
| Per 1,000 women 15 to 50 years old | 54 | 0% |
| Per 1,000 women 15 to 19 years old | 29 | 0% |
| Per 1,000 women 20 to 34 years old | 83 | 0% |
| Per 1,000 women 35 to 50 years old | 31 | 0% |
Grandparents in Cook County
*Base on 2012 Data
| Number of grandparents living with own grandchildren under 18 years | 135,864 | 100% |
| Responsible for grandchildren | 45,811 | 33.7% |
| Less than 1 year | 8,238 | 6.1% |
| 1 or 2 years | 9,467 | 7.0% |
| 3 or 4 years | 8,132 | 6.0% |
| 5 or more years | 19,974 | 14.7% |
| Number of grandparents responsible for own grandchildren under 18 years | 45,811 | 100% |
| Who are female | 31,759 | 69.3% |
| Who are married | 27,037 | 59.0% |
School Enrollment in Cook County
*Base on 2012 Data
| Population 3 years and over enrolled in school | 1,398,238 | 100% |
| Nursery school, preschool | 96,441 | 6.9% |
| Kindergarten | 66,602 | 4.8% |
| Elementary school (grades 1-8) | 533,778 | 38.2% |
| High school (grades 9-12) | 294,464 | 21.1% |
| College or graduate school | 406,953 | 29.1% |
Educational Attainment in Cook County
*Base on 2012 Data
| Population 25 years and over | 3,456,817 | 100% |
| Less than 9th grade | 273,200 | 7.9% |
| 9th to 12th grade, no diploma | 276,949 | 8.0% |
| High school graduate (includes equivalency) | 836,745 | 24.2% |
| Some college, no degree | 672,578 | 19.5% |
| Associate's degree | 213,146 | 6.2% |
| Bachelor's degree | 715,158 | 20.7% |
| Graduate or professional degree | 469,041 | 13.6% |
| Percent high school graduate or higher | 0 | 84.1% |
| Percent bachelor's degree or higher | 0 | 34.3% |
Veteran Status in Cook County
*Base on 2012 Data
| Civilian population 18 years and over | 3,967,459 | 100% |
| Civilian veterans | 224,033 | 5.6% |
Disability Status Of The Civilian Noninstitutionalized Population in Cook County
*Base on 2012 Data
| Total Civilian Noninstitutionalized Population | 5,155,227 | 100% |
| With a disability | 522,915 | 10.1% |
| Under 18 years | 1,227,474 | 100% |
| With a disability | 36,376 | 3.0% |
| 18 to 64 years | 3,320,790 | 100% |
| With a disability | 260,885 | 7.9% |
| 65 years and over | 606,963 | 100% |
| With a disability | 225,654 | 37.2% |
Residence 1 Year Ago in Cook County
*Base on 2012 Data
| Population 1 year and over | 5,131,109 | 100% |
| Same house | 4,438,657 | 86.5% |
| Different house in the U.S. | 656,750 | 12.8% |
| Same county | 521,195 | 10.2% |
| Different county | 135,555 | 2.6% |
| Same state | 48,446 | 0.9% |
| Different state | 87,109 | 1.7% |
| Abroad | 35,702 | 0.7% |
Place Of Birth in Cook County
*Base on 2012 Data
| Total population | 5,197,677 | 100% |
| Native | 4,098,252 | 78.8% |
| Born in United States | 4,023,179 | 77.4% |
| State of residence | 3,186,629 | 61.3% |
| Different state | 836,550 | 16.1% |
| Born in Puerto Rico, U.S. Island areas, or born abroad to American parent(s) | 75,073 | 1.4% |
| Foreign born | 1,099,425 | 21.2% |
U.S. Citizenship Status in Cook County
*Base on 2012 Data
| Foreign-born population | 1,099,425 | 100% |
| Naturalized U.S. citizen | 500,383 | 45.5% |
| Not a U.S. citizen | 599,042 | 54.5% |
Year of Entry in Cook County
*Base on 2012 Data
| Population born outside the United States | 1,174,498 | 100% |
| Native | 75,073 | 100% |
| Entered 2010 or later | 1,446 | 1.9% |
| Entered before 2010 | 73,627 | 98.1% |
| Foreign born | 1,099,425 | 100% |
| Entered 2010 or later | 25,919 | 2.4% |
| Entered before 2010 | 1,073,506 | 97.6% |
World Region Of Birth Of Foreign Born in Cook County
*Base on 2012 Data
| Foreign-born population, excluding population born at sea | 1,099,425 | 100% |
| Europe | 257,824 | 23.5% |
| Asia | 272,437 | 24.8% |
| Africa | 30,802 | 2.8% |
| Oceania | 1,817 | 0.2% |
| Latin America | 528,385 | 48.1% |
| Northern America | 8,160 | 0.7% |