It's actually far better than that! When people hear "poverty rate", they think "the percentage of people living in poverty". That's not what the census data on poverty is reporting, though. The census data is based on income only. It excludes in-kind welfare (Food Stamps, HUD, and Medicaid) and even excludes some welfare that is paid out in cash (like refundable tax credits). In other words, the census data is reporting that 10% of Americans earn under the poverty line. The number living under the poverty line is far, far lower.