Where the Children Are

This graph below comes from a Wall Street Journal article A California Drought: Not Enough Children. It talks about the impact of this dynamic:

… In 1970, six years after the end of the baby boom, children made up more than one-third of California's population. By 2030, they will account for just one-fifth, according to projections by lead author Dowell Myers, a USC demographer. "We have a massive replacement problem statewide," Mr. Myers said in an interview. …

It is interesting to see how this dynamic is playing out nationwide.