I have seen these types of questions before on banking and once on an unclaimed property site... not sure why anyone would be surprised by this any more. Your information - addresses, applying for mortgages or car payments or any of that stuff - is going to be in your credit history and it's a pretty nifty way to try to easily identify you as who you say you are.
I haven't lived at the same address as my sister in over 30 years and we have completely different last names and don't even live in the same state, and yet if I did a search, I can find records on the regular web stuff linking me as a relative just because at one time we did live in the same house and they can extrapolate that we're siblings from age and other identifying factors.
In one way, it's pretty cool, but in another, it's pretty darned scary.