Overview
- The U.S. Census Bureau’s latest county estimates show Los Angeles County had the nation’s biggest population loss from July 2024 to July 2025.
- The county’s headcount is now about 9.7 million after the period’s drop, which outlets report at between roughly 53,000 and 70,000 residents.
- California slipped back into decline in 2025, with a county-by-county tally indicating a net loss of about 9,465 people statewide.
- Moves out of Los Angeles fed gains in nearby and Sunbelt areas, with Riverside and San Bernardino adding 21,131 from L.A. and Las Vegas gaining more than 21,000.
- Other large coastal counties also shrank in 2025, including Orange down 8,520, San Diego down 5,294, and Ventura down 2,580, as weaker immigration inflows left high-cost metros more exposed to domestic out-migration.