As news came out in recent days about disparities in COVID-19 cases and deaths by race in Chicago (and now the AP shows blacks are disproportionately affected in numerous American locations), I wondered how this plays out in DuPage County. The second most populous county in Illinois (after Cook County) has a reputation for wealth, conservative politics, and numerous jobs.
The numbers differ across communities, with some DuPage County municipalities still having no confirmed cases while others have 40+ (and Naperville, the largest community by population in DuPage County, leads the way with 71 cases). But, it would be useful to have rates as the populations differ quite a bit in DuPage County. The Chicago Tribune has an interactive map that shows cases by zip code and also provides rates of COVID-19 cases per 100,000 (but appears to be missing data compared to the DuPage County map). Across the zip codes in DuPage County listed, the rates of cases range from the 50s to the 140s per 100,000. Working with both the absolute numbers and the rates, a few communities stand out: Addison, Lombard, Carol Stream, and West Chicago.
DuPage County has a different population composition than Chicago or Cook County. For DuPage County as a whole, 66.3% are white alone (not Hispanic or Latino), 14.5% are Latino, 12.6% Asian, and 5.3% Black.Of course, these demographics can differ pretty dramatically across different communities (Oak Brook looks different than West Chicago which looks different than Glendale Heights). While the reported data does not have a breakdown across racial/ethnic groups (and without this it is impossible to see who has contracted COVID-19 in these communities), some of the higher rates of cases are in communities that are more diverse (Lombard is an exception): Addison is 40.6% Latino (44.7% white not Latino), Carol Stream is 19.3% Asian and 14.9% Latino (and 57.2% white not Latino), and West Chicago is 52.9% Latino (36.5% white not Latino).
Second, addressing age, there are several stories about COVID-19 cases in DuPage County senior homes. The most notable case was a center in Willowbrook (where as of April 7 eight of the county’s 26 deaths had occurred), it also hit a community in Carol Stream, and eight more deaths in the county were attributed to long term care facilities. As of yesterday afternoon, 17 of the 28 COVID-19 deaths in the county occurred among long term care residents.
People 65 years old or older make up 15.5% of the population in DuPage County. Lombard is right at the county average while the other three communities with higher rates are lower than the county average.
Third, all four of the communities with higher rates of COVID-19 cases are below the county median household income. While Lombard is just below the county poverty rate, the other three communities are higher. For DuPage County, the poverty rate is 6.6% and the median household income is $88,711. (A side note on social class: wealthier communities may have fewer households receiving stimulus checks. For example, “About 30% of Naperville households earn too much to COVID-19 stimulus money, study finds.” I imagine there would be similar results in other DuPage County communities with higher incomes.)
More detailed data would obviously enhance our abilities to examine patterns in COVID-19 cases in suburban settings. And the patterns could look different even in the Chicago region: wealthier DuPage and Lake counties might have different patterns compared to other Chicagoland areas. But, I do hope that data does come eventually; while much attention is now focused on big cities, COVID-19 is widespread throughout numerous metropolitan regions, individual suburban governments have limited resources and abilities to tackle the issue, and the risk of contracting and being harmed by COVID-19 could vary quite a bit across suburban residents and businesses.