ArcGIS or other geospatial program and access to quality population density polygons via r/datahoarders or other community that can point out sources for you.

ArcGIS or other geospatial program and access to quality population density polygons via r/datahoarders or other community that can point out sources for you. (and recommend tooling - PostGIS is likely ok for this kind of thing without too much effort (fingers crossed)) It's a learning curve if you haven't done such things before, perhaps worth it if such questions interest you. You'll also be doing some seat of the pants Fermi estimations so it's be handy to run your thoughts past others that are into that kind of thing.