The Los Angeles County Health Survey is a population based telephone survey that provides information concerning the health of Los Angeles County residents. The data are used for assessing health-related needs of the population, for program planning and policy development, and for program evaluation. The relatively large sample size allows users to obtain health indicator data for large demographic subgroups and across geographic regions of the County, including Service Planning Areas and Health Districts. 

2022-2023 Los Angeles County Health Survey data collection has been completed! The survey is conducted by the LA County Department of Public Health in collaboration with RTI International.
Frequently Asked Questions
	2018 LA County Health Survey: - 2018 LACHS Background Summary Methodology 2018 (New) - Topics & Data Tables 2018 - 2018 Questionnaires: Adult & Child 2018
2015 LA County Health Survey:   - 2015 LACHS Background Summary   Methodology 2015 - Topics & Data Tables 2015 - 2015 Query System - LA HealthDataNow! - 2015 Questionnaires:   Adult & Child 2015
	2011 LA County Health Survey:   - 2011 LACHS Background Summary - Methodology 2011   - Methodology Changes FAQ's - Topics & Data Tables 2011 - 2011 Query System - LA HealthDataNow! - 2011Questionnaires: Adult 2011 Child 2011
2007 LA County Health Survey:   - 2007 LACHS Background Summary - Methodology 2007 - Topics & Data Tables 2007 - 2007 Query System - LA HealthDataNow! - 2007 Questionnaires:   Adult 2007 Child 2007 Sub-Sample 2007
	2005 LA County Health Survey: - 2005 LACHS Background Summary - Methodology 2005   - Topics & Data Tables 2005 -2005 Query System - LA HealthDataNow! - 2005 Questionnaires: Adult2005 Child2005 Sub-Sample2005
2002 LA County Health Survey: - 2002 LACHS Background Summary & Methodology - Topics & Data Tables 2002 - 2002 Questionnaires: Adult2002 Child2002   Sub-Sample2002
	1999 LA County Health Survey: - 1999 LACHS Background Summary & Methodology - Topics & Data Tables - 1999 Questionnaires: Adult1999  Child1999