If you scroll down to the bottom of this page you will note that it reads “In God We Trust. Everyone Else Bring Data.”
When you look at the data, it is interesting to note that as of 2005, according to the census bureau, 53.75% of families in the city of Irvine make over 100K. The Mr and Mrs Irvine example of a couple making 130K is not really too far out of line with what these data show.
