The next-fastest growth rate is in the giant state of Texas. Its population rose 3.6 percent to 26 million. This single state accounts for 18 percent of total U.S. population growth.

Two other states, Utah and Colorado, grew more than 3 percent, thanks to high birth rates and newcomers eager to live near ski areas. And Florida, where growth stagnated after the housing bust, grew at 2.7 percent.

The two biggest growth states of the last two decades, Nevada and Arizona, are growing again, but at a pace behind Washington state and at about the same rate of the South Atlantic states of Virginia, North Carolina, South Carolina and Georgia…

Movement within the country has been at low levels; people tend to stay put when economic times are bad, as they did in the 1930s.

But New York, New Jersey, Connecticut and Illinois did see an outflow of more than 1 percent of their 2010 populations.