- The Poverty Line: One day, one person (The Poverty Line)
- World Population Below The Poverty Line – Map (IndexMundi)
- United States Poverty Rate by State 2006-2010 – Map (IndexMundi)
- United States – People of All Ages in Poverty: 2006-2010 by County – Map (IndexMundi)
- Global poverty, Absolute Poverty, Relative Poverty: A Fresh Look – Merrell J. Tuck-Primdahl (World Bank)