California 2018 Population By County
Updated on April 4, 2021.

According to the US Census Bureau population estimates, there were 39,461,588 people living in California in 2018. was the most populated county with with with with a population of

Use the map below to interactively explore the population of each county in

Data Source: .
See also Population estimate for other years:
Table of California 2018 Population By County
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