The states with the biggest numerical increase in population from 2014 to 2015 were:
1. Texas - up by 490,036 residents
2. Florida - up by 365,703 residents
3. California - up by 352,527 residents
4. Georgia - up by 117,728 residents
5. Washington - up by 107,185 residents
6. North Carolina - up by 102,415 residents
7. Colorado - up by 100,986 residents
8. Arizona - up by 99,282 residents
9. South Carolina - up by 66,986 residents
10. Oregon - up by 57,775 residents
Source: U.S. Bureau of Census annual population estimates. Tennessee added an estimated 52,520 residents and Alabama added an estimated 12,568 residents in 2015.