Report: Obamacare reduced US uninsured from 20% to 13% [pdf]
about 16.4 million uninsured people have gained health insurance coverage
the uninsured rate dropped from 20.3 percent to 13.2 percent – a 35 percent (or 7.1 percentage point) reduction in the uninsured rate.
The uninsured rate declined across all race/ethnicity categories since the baseline period. There was a greater decline among African Americans and Latinos than among Whites.
Health insurance coverage gains were especially strong in Medicaid expansion states and were concentrated among low and middle income population groups in all states.