San Diego County has more Indian reservations than any other county in the United States. However, the reservations are very small, with total land holdings of just over 124,000 acres, or about 193 square miles of the 4,205 square miles in San Diego County (reservation acerage source from the San Diego County Tax Assessor). Of the 20,000 Native Americans who make up the 4 tribal groups that live in San Diego County, only a small percentage live on reservation land.

The following tables provide contact information, along with acreage and population figures for the tribes located within San Diego County. Population figures are based on 2000 U.S. Census Data, and acreage information is from the California Department of Transportation.