Since a few weeks, I report the raw number of COVID-19 cases in Maryland counties. If this gives an idea of the cumulative number of cases – which is interesting – it doesn’t reflect the fact that some counties have more inhabitants than others. That’s why I plotted below the number of COVID-19 cases adjusted for the population:
Today (May 11, 2020), in terms of absolute number of cases, Prince Georges, Montgomery and Baltimore County are the top 3 counties. In terms of confirmed cases per 100,000 population, the top 3 counties are Prince Georges, Montgomery and Wicomico (due to a recent surge in cases).
| Rank on May 11, 2020 | Absolute # of COVID-19 cases | COVID-19 cases per 100,000 population |
| 1 | Prince Georges (9,687) | Prince Georges (1,057) |
| 2 | Montgomery (6,909) | Montgomery (656) |
| 3 | Baltimore County (3,948) | Wicomico (649) |
| 4 | Baltimore City (3353) | Kent (555) |
| 5 | Anne Arundel (2492) | Baltimore City (544) |
This is a lot given that, today, the average for Maryland is 401/100,000 (source: CDC) and the average for the US is 552/100,000 (source: OurWorldInData).
Source of Maryland County population: projections from the Maryland Department of Planning.
As usual, you’ll find other graphs on my page about COVID-19 in Maryland and the data, code and figures are on Github.
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