Net migration, or the difference between how many people moved in and how many moved out, is one part of population change. The other part is natural change, or the difference between births and deaths.
From 2010 to 2015, Washington. . .
- Gained 251,442 residents through net in-migration.
- Had a net migration rate of 3.7 percent compared to 1.7 percent for the U.S..
- Grew by 191,006 residents due to natural change.
- Had a natural change rate of 2.8 percent compared to 2.4 percent for the U.S..