California Population 2024 Growth Rate. From 1959 to 2022, california’s average rate. The population of california in 2023 was 38,965,193, a 0.19%.
San diego county has a population of 3,337,685 and a growth rate of 7.8%, while neighboring orange county has 3,190,400 residents and a growth rate of 6%. Its largest annual population increase was 0.9% between 2013 and 2014.