2010 Census Coverage Measurement Results for Illinois
...100,000+ Total Population Aurora city, IL Person Results [<1.0 MB] Housing Unit...Unit Results [<1.0 MB] Chicago city, IL Person Results [<1.0 MB] Housing Unit Results
https://www.census.gov/programs-surveys/decennial-census/about/coverage-measurement/pes/2010/ccm-results-illinois.html