Density of confirmed and presumptive cases of COVID-19 in counties of Massachusetts.
  1–99 cases  100–499 cases  500–1999 cases  2000–4999  ≥ 5000 cases
Source data from Massachusetts Department of Public Health as of 2020-04-05.

Charts and data editable at: https://docs.google.com/spreadsheets/d/1lqwTk4mCYCYU_O6ril04_KLbwrQOPC75BXI9wx6nvsI/edit?usp=sharing
Own work
Emw