Depending on recharge habits.We don't have a lot of apartments, mainly houses and townhouses, there is a few apartments around, but not many.
Charging Stations can be built faster than petrol stations, so I can't see there being an issue with growing the number of charging stations as demand grows. Right now I would say we probably have an over supply of charging locations in my suburb, 5 is lot, I never see any of them at 100% capacity, except maybe the one at Coles a few times hashed all 4 slots used, but that pretty rare.
I suppose the easy way is to just look where its already being done where theres high EV %. Im just too lazy for that info.