States with net gain in congressional seats:      

Texas, plus 4 (from 32 to 36)
Florida, plus 2 (from 25 to 27)
Arizona, plus 1 (from 8 to 9)
Georgia, plus 1 (from 13 to 14)
Nevada, plus 1 (from 3 to 4)
South Carolina, plus 1 (from 6 to 7)
Utah, plus 1 (from 3 to 4)
Washington, plus 1 (from 9 to 10)   

States with net loss in congressional seats:

Ohio, minus 2 (from 18 to 16)
Illinois, minus 1 (from 19 to 18)
Iowa, minus 1 (from 5 to 4)
Louisiana, minus 1 (from 7 to 6)
Massachusetts, minus 1 (from 10 to 9)
Michigan, minus 1 (from 15 to 14)
Missouri, minus 1 (from 9 to 8)
New Jersey, minus 1 (from 13 to 12)
Pennsylvania, minus 1 (from 19 to 18)