The U.S. Census Bureau’s newly released 2025 population estimates show that the Bay Area has entered a period of renewed demographic growth after several challenging years, with the region’s six core counties collectively adding more than 13,000 residents between July 2024 and July 2025, even as California overall saw a slight population decline.
The San Francisco Bay Area emerges as one of California’s leading regions for population growth
Santa Clara, San Francisco and San Mateo counties show resilience, while other California regions are affected by falling immigration
By Nigel Hughes
CoStar AnalyticsMarch 27, 2026 | 6:44 P.M.
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