The population will also become much more non-white. Between 1980 and 2040, non-Hispanic whites will decline by 23 percent. The number of children born per woman declined from a peak of 3.5 children per woman on average in 1958 to about 1.8 children per woman in 1980. After 1980, the trend stays at about two births per mother. There is also a disparity in fertility by ethnicity.
Blacks have higher fertility rates than whites.
They're having more children and having them at younger ages. Hispanics also have high fertility rates. In 1970, there were over five prime-age adults supporting each aged individual. The recent experience is that about 41 percent of immigrants are Hispanic. The population is becoming increasingly higher educated.