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LA County Population Projection, 2025-2125

Los Angeles County population scenarios for 2025–2125, with age structure, fertility, migration assumptions and comparison to the state projection.

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What ships
101 projected years, 4 scenarios. CSV, no separate documentation.
Files
  • breakeven_immigration.csv1 KB
  • dof_vs_basin_accounting.csv1 KB
  • fertility_context.csv1 KB
  • headline.json1 KB
  • la_county_age_structure.csv1 KB
  • la_county_components_observed.csv1 KB
  • la_county_dof.csv2 KB
  • la_county_fertility_sensitivity.csv6 KB
  • la_county_history.csv1 KB
  • la_county_scenarios.csv5 KB
  • largest_counties_change.csv1 KB
  • scag_forecast_revisions.csv1 KB

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Columns in breakeven_immigration.csv

  • through_year
  • annual_net_immigration_needed

One hundred and seventy years of growth, and then the turn

Los Angeles County population

projected0M2M4M6M8M10M1850190019502000202520752125peak 10.01M in 20205.6Mmigration continues3.2Mimmigration stays shutstate forecast ends 2070

Solid line recorded, 1850 to 2025. Dashed line the state's official forecast to 2070. Colored lines this publication's model to 2125.

Source: Basin Data, la-population. Decennial census counts 1850-2020, Census Bureau Vintage 2025 estimates 2020-2025, California Department of Finance P-2A Vintage 2026 for the official forecast, and our own cohort-component projection past it. The state forecast stops at 2070; every line after that is ours.

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