Open Data Instructions


  • For the best performance with the Open Data website, use the latest version of the following browsers:
    • Microsoft Internet Explorer 11
    • Mozilla Firefox
    • Google Chrome
    • Apple Safari
    • iOS Safari
    • Android Browser
    • Google Chrome for Android
  • GIS Data on the site is provided in the original projection of: NAD_1983_StatePlane_California_III_FIPS_0403_Feet
  • Data on the site is sorted by category and can be found by clicking on the data categories. Additionally you can search for particular data by keyword in the Search function above the map. It is not necessary to wait for the data to load on the map before viewing the attribute table or details of the data.
  • Data can be filtered spatially or by attribute using the “Table” tab after selecting a particular dataset. Please ensure your filter is providing the appropriate results. When filtering the data on the map view, use the +/- buttons on the map to zoom in/out, and the magnifying glass on the map can be used to search for a particular location. Click and drag the map to pan.
  • Use the download button on each category, search results, or layer page to select the download format required. Data may be downloaded in Spreadsheet, KML, Shapefile or API Format.
    • Please be patient for datasets to download.