More and more suburban residents are barely scratching out a living, a report on Illinois poverty indicates. More than 386,000 people in the collar counties of DuPage, Kane, Lake, McHenry, Will and suburban Cook are among the have-nots, the study by the Mid-America Institute on Poverty of Heartland Alliance indicates. And the number of those in need in the suburbs grew by 25 percent between 1999 and 2006, a rate that surpasses Chicago’s rate of 8 percent. “Poverty is a reality, not an urban phenomenon,” said report researcher Amy Rynell of Heartland Alliance, a Chicago-based charitable organization. In Illinois, the numbers of the poor come to 1.48 million, while in Chicago the tally is 573,486.