One in eight Mainers lived in poverty in 2007. That’s according to a study done by the Margaret Chase Smith Policy Center at the University of Maine and the Maine Community action association. The 12.2% figure is about one percentage point lower than the national average. Washington county had the highest poverty rate at just over 20%. York county had the lowest at around 8%. The poverty line in the report is defined as $20,650 for a family of four.