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All San Diego County population data above are from the US Census Bureau.
The population data for San Diego County are from the Census' American Community Survey 2018 5-year estimates and the Census' 2019 Population Estimates. The demographic data for Orange County, Riverside County, San Luis Obispo County, and Santa Barbara County are the most current, comparable demographics available from the US Census Bureau, are from the American Community Survey 2018 5-year estimates, and were downloaded on 19 December 2019. Check out our FAQ section for more details.
With 3,338,330 people, San Diego County is the 2nd most populated county in the state of California out of 58 counties. But watch out, San Diego County, because Orange County with 3,175,692 people and Riverside County with 2,470,546 people are right behind you.
The largest San Diego County racial/ethnic groups are White (45.9%) followed by Hispanic (33.5%) and Asian (11.6%).
In 2018, the median household income of San Diego County residents was $74,855. San Diego County households made slightly more than San Luis Obispo County households ($70,699) and Santa Barbara County households ($71,657) . However, 12.5% of San Diego County residents live in poverty.
The median age for San Diego County residents is 35.6 years young.
86% of people CANNOT find the data they're looking for on the US Census Bureau website. Source: Nielsen Norman Group
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