As shown in the Table, the population in the Third District is largely concentrated in two counties – Sacramento (51.38%) and San Joaquin (24.82%).  Behind them, Yolo County is 7.27%, El Dorado is 6.56%, Shasta County is 6.42% and Sutter County is 6.42%.  According to the 2010 census, Sierra County had 3,240 people – 0.12% of the Third District population.

Sacramento County accounted for 36 cases between 2000 and 2009.  San Joaquin County had six, Shasta County had three, Yolo and El Dorado counties had two cases apiece and Sutter and Sierra counties produced one case each.

Next up, we’ll review the data for the Fourth District.

Image courtesy of Flickr by Joshua Tree National Park (no changes).