ABSTRACT
This chapter presents the available data on the current volume of immigration to the United States (US) and goes into considerable detail on the characteristics of immigrants. The flow of immigrants is defined as the number of foreign-born persons entering the nation as usual residents in a given period. In large part the annual flows of immigrants determine the stock of immigrants at any one time. The concepts of flow and stock are also useful with respect to the total population of the US. The chapter discusses the two relevant inflows: births and immigration and the two relevant outflows: death and emigration. The most immigration cohort Jasso and Rosenzweig examined was the cohort that first entered the US between 1965 and 1970. The chapter examines utility of the concept with respect to projections of the size of the US population.
