Cook County, IL Population By Ancestry in 2021 (ACS-5Yrs)

Updated on March 3, 2024.

Based on the US Census ACS-5Yrs estimates, in 2021, among the 5.27M Cook County, IL population, 2.58M had Other Groups ancestry (49.08%), 830.05K had Unclassified ancestry (15.76%), and 488.91K had German ancestry (9.29%).

The chart below shows the top 10 ancestry groups, and the table below shows both the number and percentages for all ancestry groups.

You can see similar information for other Illinois counties, and for Illinois.

Cook County, IL Percentages of Ancestry of Population in 2021
Other Groups
Unclassified
German
Irish
Polish
Italian
English
American
Subsaharan African
Swedish
Cook County, IL Population By Ancestry in 2021
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Ancestry Number of Ancestry Percentage of Population (%)
Other Groups 2584260 49.08
Unclassified 830054 15.76
German 488906 9.29
Irish 447375 8.50
Polish 393798 7.48
Italian 263947 5.01
English 168774 3.21
American 117102 2.22
Subsaharan African 67684 1.29
Swedish 64271 1.22
Russian 58637 1.11
European 50313 0.96
French (except Basque) 50009 0.95
Greek 46683 0.89
Norwegian 38263 0.73
Scottish 37623 0.72
Dutch 37518 0.71
Czech 35858 0.68
Ukrainian 33249 0.63
Lithuanian 32418 0.62
African 30282 0.57
West Indian (except Hispanic groups) 24604 0.47
Eastern European 21894 0.42
Romanian 21503 0.41
Nigerian 19028 0.36
Hungarian 17252 0.33
Croatian 16889 0.32
British 15363 0.29
Austrian 15332 0.29
Scotch Irish 15002 0.28
Serbian 14841 0.28
Palestinian 13232 0.25
Danish 12848 0.24
Assyrian/Chaldean/Syriac 12722 0.24
Slovak 12660 0.24
Welsh 12536 0.24
Bulgarian 11985 0.23
Arab 11321 0.22
Yugoslavian 10750 0.20
Jamaican 10440 0.20
French Canadian 9709 0.18
Jordanian 8568 0.16
Swiss 8086 0.15
Scandinavian 8075 0.15
Albania 7457 0.14
Haitian 6821 0.13
Iranian 6338 0.12
Finnish 5993 0.11
Belgian 5465 0.10
Czechoslovakian 5236 0.10
Lebanese 5225 0.10
Turkish 5146 0.10
Iraqi 5096 0.10
Canadian 5049 0.10
Ethiopian 4875 0.09
Syrian 4734 0.09
Armenian 4723 0.09
Northern European 4309 0.08
Brazilian 4160 0.08
Macedonian 4049 0.08
Egyptian 4021 0.08
Portuguese 3960 0.08
Slovene 3781 0.07
Ghanaian 3554 0.07
Belizean 3532 0.07
Moroccan 3266 0.06
Latvian 2510 0.05
Israeli 2383 0.05
West Indian 2065 0.04
Luxembourger 1884 0.04
Slavic 1861 0.04
Australian 1746 0.03
South African 1235 0.02
Sudanese 944 0.02
Trinidadian and Tobagonian 909 0.02
Afghan 873 0.02
Guyanese 739 0.01
Somali 738 0.01
Liberian 734 0.01
Senegalese 609 0.01
Kenyan 593 0.01
Maltese 558 0.01
Estonian 517 0.01
Celtic 360 0.01
Barbadian 360 0.01
Bahamian 348 0.01
Basque 312 0.01
Icelander 299 0.01
Pennsylvania German 279 0.01
British West Indian 277 0.01
Ugandan 276 0.01
German Russian 229 0.00
Cypriot 209 0.00
New Zealander 206 0.00
Zimbabwean 196 0.00
Alsatian 190 0.00
Cape Verdean 171 0.00
Sierra Leonean 158 0.00
Bermudan 116 0.00
Soviet Union 104 0.00
US Virgin Islander 87 0.00
Cajun 76 0.00
Carpatho Rusyn 45 0.00
Dutch West Indian 42 0.00