The Georgetown University report shows almost three quarters of a million California children had no coverage in 2011 - that makes the state second only to Texas in the number of uninsured kids.
But the percent of uninsured children in California has dropped slightly in recent years. Suzie Shupe from California Coverage and Health Initiatives says that's terrific. But she says, more work must be done to cover kids who are uninsured.
"At the personal level for that family it's a tragedy," says Shupe. "But for the state, what's so important is that moving forward we have a strong workforce and a strong and healthy population, and getting all of our kids enrolled in health insurance will make that a reality."