The 1% is the 10% for married parents.

There are over a million households in “the 1%”  because we have over 100 million households.  Something like 127 million, according to the most recent numbers.  Families make up about 65% of this total.  However, they make up well north of 80% of the households in “the 1%”.

This means that for the top half of married parent households, around 1 in 10 of them is a “1%” household.