From the seattlepi.com article:
Nationally, 28 percent of families were deemed working poor in 2006, up from 27 percent in 2002 as parents spent more on housing and the number of low-paying jobs grew, the report found.
New Mexico ranked worst with 41 percent of working families considered low-income. New Hampshire had the lowest rate at 15 percent.
While the fortunes of low-wage workers worsened, the report paints a picture of those families that runs counter to some common beliefs. Struggling families typically worked more than 40 hours a week, while most were headed by parents who were 25 or older. Only a quarter received food stamps.