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Trip Planner USA  /  California  /  San Diego County

San Diego County

4.4
San Diego County is a county in the southwestern corner of the state of California, in the United States. As of the 2010 census, the population was 3,095,313. making it California's second-most populous county and the fifth-most populous in the United States. Its county seat is San Diego, the eighth-most populous city in the United States. It is the south-westernmost county in the 48 contiguous United States.San Diego County comprises the San Diego-Carlsbad, CA Metropolitan Statistical Area. The San Diego-Carlsbad, CA Metropolitan Statistical Area is the 17th most populous metropolitan statistical area and the 18th most populous primary statistical area of the United States as of July 1, 2012. San Diego is also part of the San Diego–Tijuana metropolitan area, the largest metropolitan area shared between the United States and Mexico. Greater San Diego ranks as the 38th largest metropolitan area in the Americas.
San Diego County is in California. Make the most of your holiday in San Diego County by finding out about its attractions and choosing what to see using our United States trip tool .
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Popular things to do in San Diego County

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4.5
Duration: 5​h
4.8
Duration: 3​h 30​min
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Duration: 4​h 30​min
4.1
Duration: 8​h

Hidden gems in San Diego County

4.8
Duration: 3​h 30​min
4.7
Duration: 1​h 30​min
4.2
Duration: 3​h
4.7
Duration: 2​h 30​min

Parks in San Diego County

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Duration: 2​h 30​min
4.2
Duration: 2​h

Golf in San Diego County

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Duration: 3​h 30​min
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Duration: 3​h 30​min
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Duration: 3​h 30​min
4.5
Duration: 4​h
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Duration: 3​h