California
the state with the largest population — 39.5M residents, as of July 2019

Source: U.S. Census Bureau
Additional Information: In contrast, Wyoming is the least populous state, with 578,759 residents as of July 2019.
Reference: For more information, read the U.S. Census Bureau analysis, "2019 National and State Population Estimates." "2019 National and State Population Estimates."

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