Estimates of the United states population at the middle of the 21st century vary, from the U.N.’s 404 million to the U.S. Census Bureau’s 422 to 458 million. To develop a snapshot of the nation at 2050, particularly its astonishing diversity and youthfulness, I use the nice round number of 400 million people, or roughly 100 million more than we have today.
The United States is also expected to grow somewhat older. The portion of the population that is currently at least 65 years old—13 percent—is expected to reach about 20 percent by 2050. This “graying of America” has helped convince some commentators of the nation’s declining eminence. For example, an essay by international relations expert Parag Khanna envisions a “shrunken America” lucky to eke out a meager existence between a “triumphant China” and a “retooled Europe.” Morris Berman, a cultural historian, says America “is running on empty.” Read more