According to the U.S. Census Bureau, the county has a total area of 11,721 km² (4,526 mi²). 10,878 km² (4,200 mi²) of it is land and 843 km² (326 mi²) of it (7.20%) is water.
San Diego County has varied topography.
On its western side is seventy miles of coastline.
Snow-capped mountains rise to the northeast, with the Sonoran Desert to the far east. The Cleveland National Forest is in the northeast portion of the state. |