data california 2024SACRAMENTO, Calif. (AP) — California ’s population climbed above 39.5 million in 2025, marking the second year of growth following a string of decs in the nation’s most populousVintage 2025 (2025.04.25): updated with July 1 estimates; update of mration data; Vintage 2025 (2025.9.23): initial public data release. Population projections visualization