The counties that border San Diego County are: Orange County (northwest), Riverside County (north) and Imperial County (east) all located in California, United States. There is one county which could be called a county which is not called a county but is called a municipality. The municipality that borders San Diego County to the south is Tijuana Municipality located in the Baja California part of Baja California Pennisula in México.
San Diego County and Imperial County are the California counties that border Mexico.
From west to east, those would be:San Diego (San Ysidro)Otay MesaTecateCalexicoAndrade
San Diego and Imperial
San Mateo borders the counties of San Francisco (north), Santa Clara (southeast), Santa Cruz (south), and Alameda (east; water border).
The cities in California with the largest population are Los Angeles, San Diego, San Jose, San Francisco and Fresno. The counties in California with the largest population are Los Angeles County, San Diego County, Orange County, Riverside County and San Bernardino County.
The county seat of San Diego County is the city of San Diego.
San Diego County
The city of San Diego is located in San Diego County.
California produces about 90% of avocados in the United States. Within California, there are 5 districts that include California counties as follows: District 1: San Diego County District 2: San Diego County District 3: Orange County, Riverside County, San Bernardino County, San Diego County District 4: Los Angeles County, Ventura County District 5: Monterey County, San Luis Obispo County, Santa Barbara County, Ventura County
San Diego City is in San, Deigo County, California. Was not that a hard one?
Poway is an incorporated city that is in the middle of San Diego County.
Yes it is in San Diego County. 5.2 miles from downtown San Diego by ferry or the bridge.