County profiles present detailed asthma information by county. Please select a county from the list below to obtain a profile containing 2014 data. Profiles updated with 2015 data will be available in late 2017. If you are having difficulty accessing the below documents please contact CDPH at California.Breathing@cdph.ca.gov to request this information in an alternate format.
Data on asthma hospitalizations and emergency department (ED) visits by county are also available through California Environmental Health Tracking Program’s Asthma Data Query. Estimates for asthma ED visits by census tract can be accessed using CalEnviroScreen. Asthma prevalence data are available by county through AskCHIS and by zip code through AskCHIS Neighborhood Edition.