Funny you mention this. I live near Houston, Texas, soon to be, if not already, the 3rd largest city in America. What I'm seeing around me in north Houston burbs is somewhat disturbing, namely two things: 1. An outbreak of RV parks (6 near me in less than two years) 2. An outbreak of tiny home parks (Several in my area). What pains me is driving by the RV parks, where entire families are living in an RV not much larger than my kitchen and I see kids boarding the school bus. Some of you may disagree, but that is no way for a child to grow up. While I don't have anything against this per se, the stigma of that lifestyle can damage children. The rotten-ass kids at school make terrible fun of children who live in trailer parks, RV parks, tiny homes. Of course this is no fault of the children in those conditions, as they have no say in how they live, only in how they perform at school. This area lives and dies by oil and gas jobs. It's likely no accident that in the last couple of years, those jobs have bottomed out and many people have lost their jobs. I don't know if there is a correlation between the job losses (tens of thousands) and the number of cheaper housing accommodations springing up, but it's real and it's somewhat disturbing to see so many people in a down-and-out state.
Editing to say that these are not the $500,000 RVs that retired people holiday in. They are kitchen-sized campers (for lack of a better term) that may be the size of 6-8 cubicles. They need outside water connections which many don't have, and they almost always need propane attachments. Many have composting toilets which the owner needs to clean out, as they cannot connect to the sewer lines.