Proportion of population aged 60 and over and COVID-19 infected (%) in March 2020
Proportion of population 60 and older in Estonian local governments as of 2019 and by COVID-19 infected counties
Population data: Estonian Statistics Board (https://www.stat.ee/)
COVID-19 data:
Estonian Health Board Koroonakaart (https://www.terviseamet.ee/et/koroonaviirus/koroonakaart)
Data on the current situation of the coronavirus (Estonian Open Data Portal) (https://opendata.riik.ee/andmehulgad/)
Base map: Leaflet, OpenStreetMap contributors, CartoDB
The Jupyter notebook (view here) is provided in my GitHub repo.