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San Luis Obispo County, California


Precinct Maps

Precinct Mapping Resources

The Clerk-Recorder’s office has implemented GIS (Geographical Information Systems) technology in maintaining precinct boundaries and map printing.  This allows the use of data maintained by various county departments and agencies (Public Works, Assessor, Planning, Cities, LAFCO, the Citizens Redistricting Commission and the Census Bureau) when drawing precinct boundary lines.  The use of technology in these functions will result in more accurate and up-to-date maps.

Large format pdf maps (48” x 36”) are available free of charge for download. Maps of the entire county, supervisorial districts, cities, and major communities are available online.

Upon request, existing pdf maps can be burned onto a cd for $2. Printed versions of existing large format map must be ordered and cost $15 each.

Printing Instructions:  For best results when printing, select “Fit to Printable Area” under Page Scaling or in Printer Properties


Supervisorial Districts:



NOTE:  The County of San Luis Obispo does not assume liability for any damages caused by any errors or omissions in the data of the precinct maps.  The County of San Luis Obispo makes no warranty of any kind, express or implied, that these data are accurate and reliable, nor does the fact of distribution constitute such a warranty.  Independent verification of all data contained on these maps should be obtained by any user thereof.  Users assume responsibility to determine the appropriate use of these data.

Interactive Precinct Mapping Application

For more detailed viewing, a mapping application is also available with 11" x 17" map printing capability.  Click here to access Precinct View


Open Data Initiative

Precinct data is available various formats (e.g. spreadsheet, KML, shapefile) at