census how to measure poverty
The two separate accounting methods used by the Census Bureau to calculate poverty rates U.S. Census Bureau

Pew Research released a slew of new data on Monday looking at the 50 years since President Lyndon Johnson declared war on poverty. This chart shows how poverty levels have changed by region in the past half-century.

For more details on the data around U.S. poverty, see Pew's "Who’s poor in America? 50 years into the ‘War on Poverty,’ a data portrait"