California Population 2024 Graph. Not surprisingly, california's los angeles county is the largest county in the state, as well as the nation, with a huge population of 10,150,558. California’s population declined by 37,200 between july 1, 2022 and july 1, 2023, to total 39.11 million, according to official population estimates released today by.

Not surprisingly, california’s los angeles county is the largest county in the state, as well as the nation, with a huge population of 10,150,558. Economy 11 basic statistic u.s.