CENSUS DATA SHOW A SHARP INCREASE IN LIVING STANDARD
Comprehensive new census data show American standard of living increased markedly throughout most of country in 1990's, with gains in education, housing and mobility along with higher income; provide latest evidence that magnet of readily available jobs is attracting immigrants at ever faster pace; finds about 44 percent of nation's 30.5 million foreign-born residents arrived in 1990's and that immigrants make up 11 percent of country's population--largest share since 1930's; nearly one in five Americans does not speak English at home; survey finds much of nation's wealth is still concentrated in Northeast, but that region lost some of its edge in decade as jobs and people migrated to fast-growing, economically vibrant areas like Southeast and West; other findings highlighted (M)


