Robert Hummer and Erin Hamilton note that the prevalence of fragile families varies substantially by race and ethnicity. African Americans and Hispanics have the highest prevalence; Asian Americans, the lowest; and whites fall somewhere in the middle. The share of unmarried births is lower among most foreign-born mothers than among their U.S.-born…

Reviews factors such as income, employment, housing, and transportation which tend to keep women and female-headed families concentrated in cities. Proposes that cities are ideal places for future experimentation in lifestyles not based on traditional sex roles. (GC)