Source · IRS Statistics of Income, County-to-County Migration Data, LA County (FIPS state=06, county=037). Gross outflow (AGI of filers who left LA for other states) — Actual (IRS): 2020–21 [$8.44B] · 2021–22 [$8.65B] · 2022–23 [$7.04B] = $24.14B verified. Estimated from the IRS trend: 2023–24 ~$6.50B · 2024–25 ~$5.80B = $12.30B (IRS dollar data ends at 2022–23). 5-year total: $36.44B. Raw CSVs (LA County rows): outflow 2021 · 2122 · 2223; inflow 2021 · 2122 · 2223. Filter: y1_statefips=6, y1_countyfips=37, y2_statefips ≠ 6, sum agi × 1,000. Estimate method: continue the IRS-verified declining gross-outflow trend (2021→22 −18.6% YoY) forward two years; consistent with US Census ACS state-to-state 2023 (CA outmigration easing but continuing). Net context: LA also received ~$25.3B from out-of-state filers ($15.32B verified + ~$10.0B est), so net AGI loss ≈ $11.1B. People: ~370K gross / ~190K net residents (IRS n2). For scale: $36.44B ≈ ~2% of LA County's 5-year aggregate AGI (~$1.7T illustrative). Full row-by-row audit: verify-la-exodus.html. The real economic impact is almost certainly larger than $36.44B because AGI doesn't capture: (1) Corporate income — AGI is individual-taxpayer data only; the LA HQs that left (◆ Occidental, CBRE, AECOM, SpaceX, plus Oak View Group to Denver in 2023) took jobs and corporate tax base not in this file. (2) Wealthy filers who keep an LA address but live mostly elsewhere (second home in TX, condo in FL) — only filers who change official tax residence are captured. (3) Capital gains realized after the move — reported in the new state's returns, not in LA's loss column (IRS file is a year-of-move snapshot only). (4) Local-economy multiplier loss — every household that left stopped buying groceries, paying property tax, hiring contractors, supporting nearby businesses; none of that downstream activity is in AGI. (5) Talent and founder flight — skilled workers/entrepreneurs who keep CA filing while building businesses elsewhere create out-of-state activity that doesn't register as a "move." (6) Sales- and property-tax base erosion — long-tail effects on city/county revenue, separate from federal AGI. Excludes intra-CA and foreign migration. ◆ Major LA-area HQ relocations: Occidental ('14 Houston), CBRE ('20 Dallas), AECOM ('21 Dallas), Oak View Group ('23 Denver, private — no ◆), SpaceX ('24 Starbase TX, ◆ sized by last private valuation). Market cap / valuation shown for context only, not added to the AGI total. Tesla/Oracle/HPE/Schwab left the Bay Area, not LA. As of May 2026.