For the 50 percent of families in the middle of the scale, household income ranges from $51,000 to $123,000 for a typical four-person, two-parent family.
The median is about $81,000. [half the families make more, half make less].
Median income for a single-parent, two-child family is about $25,000. [mostly women... they're hurting].
Those numbers are from 2008, and have probably fallen 5 to 7 percent since then, on account of the recession.
U.S. News March 23, 2010.