This report consolidates U.S. Census information from 1900-2000 to illustrate population changes over the 20th century. The population more than tripled, from 76 million in 1900 to 281 million in 2000. It grew increasingly metropolitan each decade. In 1900, half of the population was under 22.9 years old. By 2000, half of the population was over…

Using 1980 and 1980 census data, tests hypotheses about the effects of adaptation, assimilation, and disruption on Mexican-origin women's fertility. Fertility declines with greater length of familial exposure to the United States, suggesting that fertility behavior of Mexican Americans will come to resemble that of the general population. (SLD)