Over the next 40 years, demographers estimate that the U.S. population will surge by an additional 100 million people, to 400 million over all. The population will be enterprising and relatively young. In 2050, only a quarter will be over 60, compared with 31 percent in China and 41 percent in Japan.
Over the next 40 years, Kotkin argues, urban downtowns will continue their modest (and perpetually overhyped) revival, but the real action will be out in the compact, self-sufficient suburban villages. Many of these places will be in the sunbelt — the drive to move there remains strong — but Kotkin also points to surging low-cost hubs on the Plains, like Fargo, Dubuque, Iowa City, Sioux Falls, and Boise.
The demographic growth is driven partly by fertility. The American fertility rate is 50 percent higher than Russia, Germany or Japan, and much higher than China. Americans born between 1968 and 1979 are more family-oriented than the boomers before them, and are having larger families.