Poverty headcount ratio at $3.20 a day (2011 PPP) (% of population) - United States
World Bank, Development Research Group. Data are based on primary household survey data obtained from government statistical agencies and World Bank country departments. Data for high-income economies are from the Luxembourg Income Study database. For more information and methodology, please see PovcalNet ( iresearch.worldbank.org/PovcalNet/index.htm ).