Interesting. I live in Southern California (LA suburbs) and there are more kids (of all races including white) than what you describe. There are probably regional differences in fertility rate. I know California is probably lower than many other parts of the country.

Ahh... the Internet delivers:

https://en.wikipedia.org/wiki/List_of_U.S._states_and_territ...

... also:

https://3.bp.blogspot.com/-vWDFXMF6R7Y/Wp4PBC3EpyI/AAAAAAAAF...