South Carolina saw the greatest increase in population due to domestic migration, while Hawaii's population shrank the most, the U.S. Census Bureau's most recent interstate migration estimates show.

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 ...

Hundreds of decisions—how to build roads, where to send medicine, how to plan for natural disasters—depend on knowing where people live. Over the past few decades, population maps have become powerful ...