Asthma Statistics (California) Recent data from the California Department of Health Services In 2003, 14.8 percent of children and 12.3 percent of adults in California-an estimated 4.5 million individuals-had been diagnosed with asthma, About 40,000 Californians are hospitalized every year because of asthma.
In California asthma disproportionately affects children and young adults with prevalence being the highest among children 12-17.
It is hard to grasp but today over 600 people die from asthma a year in California alone.