Entries for January 18, 2007

That's the term the Census Bureau uses to describe the net number of people leaving or moving into a state or county; the other components of population increase/decrease are natural increase (the number of births minus the number of deaths) and international migration. The net internal migration in the entire country is, by definition, zero. I took a look the other day at the internal migration in counties and found that internal immigration and outmigration in the period 2000-05 is staggering. In 24 counties, there was a net immigration of more than 50,000. In 33 counties, there was a net outmigration of more than 50,000.