The Census Bureau's Population Estimates and Projections Programs yield a component of population change labeled "Net International Migration." This component includes, but does not differentiate, a) legal immigration from abroad, b) net undocumented immigration from abroad, c) emigration from the U.S., and d) net movement between Puerto Rico and the U.S. mainland.
You can find this component among our national, state, and county population estimates, and among our population projections.
