About all we can do is compare zinc to some other metals. Zinc isn't a terrible conductor, but it isn't the greatest, either. Perhaps it might be best to classify it a fair as regards electrical conductivity. Here is a list of just a few metals and their electrical conductivity as "just a number" to make comparison easy: Aluminum 59
Copper (annealed) 100
Zinc 28.2 Zinc isn't great, but it isn't at the bottom of the list, either.