These are Federal, not State programs. If you check the link I provided, you will see there is assisted housing available in every state, including Puerto Rico.

I did indicate the average wait times varied by location. They are national averages - meaning some areas will be less, others higher.

It is true that subsidized housing stock is generally located in the poorer neighborhoods. However, most people on a limited income can't afford to live in the more affluent neighborhoods anyway. This gives them an option for rental assistance.