If you want to know about a neighborhood head to the nearest Walmart at 6 PM, IMO.
Actually I think the real test is not Walmart at 6pm (which is usually working people on the way home), but Walmart at 2pm. In my town the 2pm crowd is retirees and young women with pre-school children. In a Walmart I visited in Florida a few years ago, the 2 pm crowd was clearly dominated by those on social assistance.