Cook County Historical First Ancestry Data
ACS 2010-2014 data
4,842,054 (92.62%) out of the total population of 5,227,827 reported first ancestry.
Cook County | % of the Total Population | Illinois | U.S. | |
Arab | 61,429 | 1.18%, see rank | 0.71% | 0.56% |
Czech | 45,752 | 0.88%, see rank | 0.92% | 0.47% |
Danish | 14,637 | 0.28%, see rank | 0.38% | 0.42% |
Dutch | 45,170 | 0.86%, see rank | 1.37% | 1.40% |
English | 158,976 | 3.04%, see rank | 5.90% | 8.02% |
French | 68,573 | 1.31%, see rank | 2.13% | 3.34% |
German | 545,422 | 10.43%, see rank | 19.07% | 15.03% |
Greek | 51,490 | 0.98%, see rank | 0.76% | 0.41% |
Hungarian | 22,000 | 0.42%, see rank | 0.40% | 0.46% |
Irish | 498,173 | 9.53%, see rank | 12.00% | 10.80% |
Italian | 299,058 | 5.72%, see rank | 6.14% | 5.52% |
Norwegian | 39,470 | 0.75%, see rank | 1.25% | 1.42% |
Polish | 457,575 | 8.75%, see rank | 7.22% | 3.01% |
Portuguese | 2,730 | 0.05%, see rank | 0.08% | 0.44% |
Russian | 67,189 | 1.29%, see rank | 0.97% | 0.92% |
Scotch-Irish | 15,409 | 0.29%, see rank | 0.59% | 0.99% |
Scottish | 37,898 | 0.72%, see rank | 1.16% | 1.72% |
Subsaharan African | 49,943 | 0.96%, see rank | 0.64% | 0.95% |
Swedish | 73,984 | 1.42%, see rank | 2.13% | 1.27% |
Swiss | 7,866 | 0.15%, see rank | 0.27% | 0.30% |
Ukrainian | 30,501 | 0.58%, see rank | 0.40% | 0.31% |
American | 115,408 | 2.21%, see rank | 5.00% | 7.12% |
Welsh | 12,541 | 0.24%, see rank | 0.37% | 0.57% |
ACS 2008-2012 data
4,896,844 (94.21%) out of the total population of 5,197,677 reported first ancestry.
Cook County | % of the Total Population | Illinois | U.S. | |
Arab | 54,805 | 1.05%, see rank | 0.64% | 0.53% |
Czech | 47,046 | 0.91%, see rank | 0.96% | 0.50% |
Danish | 14,826 | 0.29%, see rank | 0.40% | 0.45% |
Dutch | 46,167 | 0.89%, see rank | 1.46% | 1.51% |
English | 164,368 | 3.16%, see rank | 6.23% | 8.53% |
French | 71,023 | 1.37%, see rank | 2.26% | 3.54% |
German | 566,895 | 10.91%, see rank | 19.89% | 15.79% |
Greek | 53,415 | 1.03%, see rank | 0.78% | 0.42% |
Hungarian | 21,391 | 0.41%, see rank | 0.41% | 0.48% |
Irish | 515,584 | 9.92%, see rank | 12.52% | 11.36% |
Italian | 304,133 | 5.85%, see rank | 6.29% | 5.66% |
Norwegian | 41,641 | 0.80%, see rank | 1.30% | 1.46% |
Polish | 472,317 | 9.09%, see rank | 7.47% | 3.13% |
Portuguese | 2,369 | 0.05%, see rank | 0.08% | 0.46% |
Russian | 70,532 | 1.36%, see rank | 1.03% | 0.97% |
Scotch-Irish | 17,308 | 0.33%, see rank | 0.65% | 1.07% |
Scottish | 37,663 | 0.72%, see rank | 1.20% | 1.81% |
Subsaharan African | 48,421 | 0.93%, see rank | 0.62% | 0.93% |
Swedish | 76,925 | 1.48%, see rank | 2.24% | 1.34% |
Swiss | 7,944 | 0.15%, see rank | 0.29% | 0.31% |
Ukrainian | 30,489 | 0.59%, see rank | 0.40% | 0.31% |
American | 97,639 | 1.88%, see rank | 4.85% | 6.72% |
Welsh | 12,928 | 0.25%, see rank | 0.40% | 0.60% |
ACS 2006-2010 data
4,912,840 (94.97%) out of the total population of 5,172,848 reported first ancestry.
Cook County | % of the Total Population | Illinois | U.S. | |
Arab | 45,769 | 0.88%, see rank | 0.55% | 0.50% |
Czech | 49,240 | 0.95%, see rank | 1.01% | 0.53% |
Danish | 14,533 | 0.28%, see rank | 0.42% | 0.48% |
Dutch | 48,052 | 0.93%, see rank | 1.58% | 1.63% |
English | 170,207 | 3.29%, see rank | 6.56% | 9.02% |
French | 73,187 | 1.41%, see rank | 2.43% | 3.77% |
German | 582,243 | 11.26%, see rank | 20.72% | 16.51% |
Greek | 56,997 | 1.10%, see rank | 0.83% | 0.44% |
Hungarian | 21,499 | 0.42%, see rank | 0.43% | 0.51% |
Irish | 523,306 | 10.12%, see rank | 12.94% | 11.76% |
Italian | 306,814 | 5.93%, see rank | 6.35% | 5.78% |
Norwegian | 42,318 | 0.82%, see rank | 1.36% | 1.51% |
Polish | 488,352 | 9.44%, see rank | 7.69% | 3.24% |
Portuguese | 2,483 | 0.05%, see rank | 0.08% | 0.47% |
Russian | 72,968 | 1.41%, see rank | 1.07% | 1.01% |
Scotch-Irish | 33,082 | 0.64%, see rank | 1.12% | 1.72% |
Scottish | 40,342 | 0.78%, see rank | 1.26% | 1.92% |
Subsaharan African | 49,434 | 0.96%, see rank | 0.63% | 0.91% |
Swedish | 78,000 | 1.51%, see rank | 2.37% | 1.41% |
Swiss | 8,432 | 0.16%, see rank | 0.33% | 0.33% |
Ukrainian | 29,108 | 0.56%, see rank | 0.40% | 0.31% |
American | 81,737 | 1.58%, see rank | 4.61% | 6.28% |
Welsh | 13,391 | 0.26%, see rank | 0.41% | 0.63% |
ACS 2005-2009 data
5,001,330 (95.14%) out of the total population of 5,257,001 reported first ancestry.
Cook County | % of the Total Population | Illinois | U.S. | |
Arab | 43,373 | 0.83%, see rank | 0.52% | 0.50% |
Czech | 49,236 | 0.94%, see rank | 1.02% | 0.54% |
Danish | 15,766 | 0.30%, see rank | 0.44% | 0.49% |
Dutch | 49,408 | 0.94%, see rank | 1.61% | 1.68% |
English | 177,157 | 3.37%, see rank | 6.71% | 9.29% |
French | 77,882 | 1.48%, see rank | 2.51% | 3.90% |
German | 606,491 | 11.54%, see rank | 21.16% | 16.89% |
Greek | 60,172 | 1.14%, see rank | 0.85% | 0.45% |
Hungarian | 22,914 | 0.44%, see rank | 0.45% | 0.52% |
Irish | 546,855 | 10.40%, see rank | 13.14% | 12.01% |
Italian | 315,508 | 6.00%, see rank | 6.45% | 5.91% |
Norwegian | 43,752 | 0.83%, see rank | 1.38% | 1.55% |
Polish | 507,005 | 9.64%, see rank | 7.85% | 3.32% |
Portuguese | 2,775 | 0.05%, see rank | 0.07% | 0.48% |
Russian | 76,748 | 1.46%, see rank | 1.11% | 1.04% |
Scotch-Irish | 34,597 | 0.66%, see rank | 1.15% | 1.77% |
Scottish | 42,427 | 0.81%, see rank | 1.31% | 1.97% |
Subsaharan African | 50,901 | 0.97%, see rank | 0.62% | 0.88% |
Swedish | 81,874 | 1.56%, see rank | 2.46% | 1.45% |
Swiss | 8,404 | 0.16%, see rank | 0.33% | 0.34% |
Ukrainian | 29,309 | 0.56%, see rank | 0.40% | 0.32% |
American | 84,637 | 1.61%, see rank | 4.55% | 6.43% |
Welsh | 13,805 | 0.26%, see rank | 0.42% | 0.65% |
US Census 2000 data
4,670,929 (86.87%) out of the total population of 5,376,741 reported first ancestry.
Cook County | % of the Total Population | Illinois | U.S. | |
Arab | 32,157 | 0.60%, see rank | 0.38% | 0.36% |
Czech | 32,587 | 0.61%, see rank | 0.57% | 0.27% |
Danish | 9,843 | 0.18%, see rank | 0.26% | 0.30% |
Dutch | 33,845 | 0.63%, see rank | 0.90% | 0.91% |
English | 99,754 | 1.86%, see rank | 4.12% | 5.91% |
French | 38,238 | 0.71%, see rank | 1.34% | 2.39% |
German | 380,812 | 7.08%, see rank | 13.82% | 10.81% |
Greek | 49,620 | 0.92%, see rank | 0.65% | 0.34% |
Hungarian | 14,659 | 0.27%, see rank | 0.27% | 0.32% |
Irish | 368,122 | 6.85%, see rank | 7.62% | 6.85% |
Italian | 267,113 | 4.97%, see rank | 4.81% | 4.59% |
Norwegian | 29,674 | 0.55%, see rank | 0.96% | 1.15% |
Polish | 426,169 | 7.93%, see rank | 5.68% | 2.24% |
Portuguese | 1,396 | 0.03%, see rank | 0.04% | 0.33% |
Russian | 56,415 | 1.05%, see rank | 0.72% | 0.68% |
Scotch-Irish | 22,357 | 0.42%, see rank | 0.73% | 1.17% |
Scottish | 24,283 | 0.45%, see rank | 0.73% | 1.12% |
Subsaharan African | 49,741 | 0.93%, see rank | 0.57% | 0.61% |
Swedish | 50,446 | 0.94%, see rank | 1.52% | 0.87% |
Swiss | 4,504 | 0.08%, see rank | 0.17% | 0.19% |
Ukrainian | 24,503 | 0.46%, see rank | 0.30% | 0.24% |
American | 97,964 | 1.82%, see rank | 4.58% | 7.33% |
Welsh | 5,728 | 0.11%, see rank | 0.20% | 0.31% |
* ACS stands for U.S. Census American Community Survey. According to the U.S. Census, if the date is a range, you can interpret the data as an average of the period of time.