Question for all: How many own their own homes?

[Myrtle]

....or to flesh it out a bit more:

Does anyone know where to get accurate information on how many primary residences are owned OUTRIGHT by their occupants?

Virtually everyone lives somewhere.

Whether they rent or own, what I'm interested in identifying is how many of us currently spend a portion of our income on primary housing expenses (rent, mortgage, etc.) vs. how many do not.