Welcome to the State of California 

Geographic Information Systems (GIS) & Maps

Geographic information systems are networks of computer hardware, software and services, designed to work with data that has a particular dimension of interest: geographic location. This location information may be any kind of spatial reference, such as a street address, a set of latitude-longitude coordinates, or the center point of a zip code boundary.  

Much of the data and information CDPH generates and utilizes has a geographic or spatial component: licensed health care facility locations, program delivery sites, disease case distribution, spatial relationship between environmental hazards and health outcomes.  Thinking back to Dr. John Snow and cholera, geographic health information has been used through the centuries to generate and test hypotheses, communicate findings, and evaluate resources.  Today, geographic data is integral for assessing access to health services, targeting public health resources and program delivery, exploring geographic and social disparities in population health and well-being, emergency response and preparedness, and theories about causal relationships (agent vs. disease).

GIS is a robust and maturing CDPH activity that is supported in an Enterprise-wide environment.

GIS technology helps us to:

  • Manage and integrate public health data
  • Do statistical analysis, visualization, and reporting
  • Document data and information
  • Collaborate with other disciplines
Last modified on: 11/14/2014 4:32 PM