California Population 2024 Growth Rate 2024. In 2023 california’s population grew by nearly 0.2%, or about 67,000 residents (see chart). By far the most populous state in the united states is california, which has more than 40 million residents and comprises nearly 12% of the country’s total population.

1, 2024, when california was home to 39,128,162 people, according to new population. The current population of ontario, california is 184,705 based on our projections of the latest us census estimates (released may 2024).