We divided the state into 11 regions that are part of the Restore Illinois plan.
covid_region_populations.csv contains the July 2018 Census population estimates in 10-year age bins for these regions.
To account for underreported deaths, we used the excess deaths estimated for the state of Illinois as calculated by the CDC. We estimated the reporting probability of a COVID death by comparing excess deaths to the observed number of COVID deaths in a given week.