Buchanan County, in southwest Virginia, is among the nation's most destitute based on median income, with poverty hovering at 24 percent. The county is mostly white, as are 99 percent of its poor.More than 90 percent of Buchanan County's inhabitants are working-class whites who lack a college degree. Higher education long has been seen there as nonessential to land a job because well-paying mining and related jobs were once in plentiful supply. These days many residents get by on odd jobs and government checks. Salyers' daughter, Renee Adams, 28, who grew up in the region, has two children. A jobless single mother, she relies on her live-in boyfriend's disability checks to get by. Salyers says it was tough raising her own children as it is for her daughter now, and doesn't even try to speculate what awaits her grandchildren, ages 4 and 5. Smoking a cigarette in front of the produce stand, Adams later expresses a wish that employers will look past her conviction a few years ago for distributing prescription painkillers, so she can get a job and have money to "buy the kids everything they need." "It's pretty hard," she said. "Once the bills are paid, we might have $10 to our name." ___ Census figures provide an official measure of poverty, but they're only a temporary snapshot that doesn't capture the makeup of those who cycle in and out of poverty at different points in their lives. They may be suburbanites, for example, or the working poor or the laid off. In 2011 that snapshot showed 12.6 percent of adults in their prime working-age years of 25-60 lived in poverty. But measured in terms of a person's lifetime risk, a much higher number â¿¿ 4 in 10 adults â¿¿ falls into poverty for at least a year of their lives.