Population for places where a health department covers multiple counties

[nmerket]

On this page: http://91-divoc.com/pages/covid-by-your-locations/

For most places, there is one-to-one relationship between county and health department where the cases are reported. In cases where there isn't a one-to-one relationship, the population isn't reported. For example, the Bear River Health Department in Utah covers Box Elder, Cache, and Rich counties (some of those are pretty rural so don't have their own health department or reporting). There are probably others out there as well, but that's where I have people I want to

I'm happy to submit a pull request that would add the population of those counties together, but I wanted to connect first and see if there was a more "wholistic" way of doing that by creating a many-to-one relationship between the two tables. Granted we would not know for other health departments what the mapping should be, but it could be crowdsourced over time.