> There is a LOT of room in the country for growth
No there isn't. All the places with viable logistics and water supply are pretty much full up. Urban areas need barge transport, good rail grades, aqueducts, and rivers to carry away waste. You can't plop a city down in the middle of nowhere. The energy economics mean it will never work. All the sites worth building on have been built on. A lot of the places supplied mostly by truck are of questionable viability in coming years.
Probably the only area of the country that could long term sustain a much higher population density is the great lakes region.
No there isn't. All the places with viable logistics and water supply are pretty much full up. Urban areas need barge transport, good rail grades, aqueducts, and rivers to carry away waste. You can't plop a city down in the middle of nowhere. The energy economics mean it will never work. All the sites worth building on have been built on. A lot of the places supplied mostly by truck are of questionable viability in coming years.
Probably the only area of the country that could long term sustain a much higher population density is the great lakes region.