california 's population would rise by 1,128 , 000 from the april 1990 census to 30,888 , 000 . ; arizona also would gain two seats instead of one , for a total of nine . ; baltimore , dallas and houston would grow by 5 percent , san diego by 4 , new york and phoenix by 3 and chicago by 2.6 percent . ; los angeles would grow from 3.5 million to 3.7 million , an undercount of 5.1 percent . ;