Getting Renter Demographic's by Area

[Sean Barnett]

Hey BP family,

I've been looking into the Houston real estate market to start my Buy&Hold investing portfolio. I'm wondering if there is a place I can go to get renter's information by area? Is there a way to know how may houses in a given area are renting and if so, are you able to get demographics of any sort? Does this information exist for public access? 

I see that I could go on HAR, Zillow, Redfin, etc and see what is currently listed for rent or already has rented, but I wanted to go deeper to see % of rentals vs sold(by neighborhood, zip, etc) and even demographic information as well. Appreciate any guidance here.