Potrero (Spanish for "Pasture") is a census-designated place in the Mountain Empire area of southeastern San Diego County, California.

[5] State Route 94 connects Potrero by road west to San Diego and east to Campo.

According to the United States Census Bureau, the CDP covers an area of 3.1 square miles (8.2 km2), all of it land.

In 2007, Blackwater USA submitted plans to build a weapons training facility in Potrero.

[7] On 11 December 2007, all five members of the Potrero Community Planning Group who approved the Blackwater project lost their seats in a recall election.