How many uninsured homeowners are there?

Answer 1

Nobody that I know of tracks records for uninsured homes.

The best you could do is try to find out how many homes there are and how many are insured, from there you might be able to extrapolate an estimate of uninsured homes. I would not however go with the result as a firm number of uninsured because many people use international insurers, so those policies would not necessarily be counted by our domestic insurers. They simply would not be on the rolls of domestic insurers but that does not mean they are uninsured.