New Hampshire's population growth is driven by people moving in, as deaths outnumber births. Vermont lost population, while Maine and Massachusetts gained.

Though there were more newborns in the state last year, the number of deaths still outpaced the number of births for the ninth year in a row.

Across all 50 states, the population increased by an average of 1.55% over one year. But some states saw a much larger boom in the number of residents, while others lagged behind. And within each ...