Raleigh, N.C. — If you moved to the Raleigh area over the past decade, you're not alone. A Forbes analysis of census data shows the metropolitan area is the fastest growing in the country over the past year. In 2012, the estimated population was almost 1.2 million people, an increase of more than 47 percent since 2000. 

An interactive mapping tool published by the Census Bureau shows which parts of the country are seeing their population boom and which are going bust from aging populations and weakening local economies that are spurring young adults to seek jobs and build families elsewhere.

Despite increasing deaths, the U.S. population as a whole continues to grow, boosted by immigration and relatively higher births among the mostly younger migrants from Mexico, Latin America and Asia.

The findings also reflect the increasing economic importance of foreign-born residents as the U.S. ponders an overhaul of a major 1965 federal immigration law. Without new immigrants, many metropolitan areas such as New York, Chicago, Detroit, Pittsburgh and St. Louis would have posted flat or negative population growth in the last year.

The map shows movers from just about every other county in North Carolina have relocated to Wake County over the past five years. A significant influx also comes from the corridor that stretches from Washington, D.C., to Boston, Mass., from Florida and from the far Southwest.

Montgomery County, Md., just outside of D.C., and Queens County, New York, sent the most people to Wake County.