​In California, implementation of the Affordable Care Act (ACA) helped lower the uninsured rate from 16 percent in 2013 to 11 percent in 2014. However, the latest edition of California's Uninsured finds that 3.8 million Californians under 65 still remained without coverage after the first year of full ACA implementation.

Authors used 2014 California Health Interview Survey (CHIS) data on health status, usual source of care, delays in care, and reasons cited by insurance source. Authors used Current Population Survey data to calculate rates of uninsurance. Key findings include:

• From 2013 to 2014, the percentage of Californians who had individually purchased insurance or Medi-Cal increased.
• Californians age 21 to 24 experienced the largest drop of any nonelderly age group in the percentage that was uninsured, from 25 percent in 2013 to 16 percent in 2014.
• Of the state's remaining uninsured, 1 in 4 was between the age of 25 and 34, and more than half (57 percent) were Latino.
• Within the employed population, more than 2 million workers, about 1 in 8, were uninsured.