Report released by the CDC in December 2013 which gives the percentages of people insured in this country broken down factors such as age, gender, race, and state from January through June 2013. California is one of the states that has a higher percentage of uninsured people than the national average. 7.2% of children between 0 to 17 years old in California were insured at the time of the interview that was used to obtain the data for this study.
I suspect that these numbers and percentages are going to change with the Affordable Care Act and it will be interesting to see the difference between January through June 2013 and January through June 2014. There was no statistically significant difference between January through June 2012 and January through June 2013.