I can give you an annectdote. Arlington, VA is the richest county in the state. Every fast food place will feature an immigrant staff which is hard working and

I can give you an annectdote. Arlington, VA is the richest county in the state. Every fast food place will feature an immigrant staff which is hard working and punctual. Prince Williams County is rural, think forests and trailer parks, but the fast food joints are all staffed by bored teenagers and high college students. Checking who is the lowest on the income totem pole just seems to show if the economic situation for all adults is stable or not. Now it could be unstable due to a bad economy leading to older adults getting fired from better jobs. But it could also be due to other reasons like immigrants moving to a new area; or retirees becoming bored with their empty nests.