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County-to-county migration · IRS SOI · filing years 2022-2023
Net migration: -2,970 tax returns · -6,762 people · $-965,070,000 AGI
| County | Returns | AGI |
|---|---|---|
| San Francisco County, CA | 4,514 | $798,930,000 |
| Santa Clara County, CA | 3,879 | $975,649,000 |
| Alameda County, CA | 2,026 | $301,628,000 |
| Los Angeles County, CA | 977 | $139,426,000 |
| Contra Costa County, CA | 839 | $100,953,000 |
| San Diego County, CA | 439 | $50,658,000 |
| Sacramento County, CA | 352 | $28,466,000 |
| King County, WA | 329 | $77,009,000 |
| Orange County, CA | 325 | $42,262,000 |
| San Joaquin County, CA | 245 | $17,052,000 |
| County | Returns | AGI |
|---|---|---|
| Santa Clara County, CA | 3,874 | $1,010,532,000 |
| San Francisco County, CA | 3,710 | $609,538,000 |
| Alameda County, CA | 2,498 | $361,544,000 |
| Contra Costa County, CA | 1,313 | $206,372,000 |
| Los Angeles County, CA | 900 | $128,269,000 |
| Sacramento County, CA | 635 | $65,863,000 |
| San Diego County, CA | 600 | $133,892,000 |
| San Joaquin County, CA | 416 | $37,229,000 |
| King County, WA | 397 | $76,851,000 |
| Solano County, CA | 381 | $36,076,000 |
IRS migration data tracks where tax filers lived in consecutive years. A "return" is roughly a household; "AGI" is the adjusted gross income that moved with them. Net migration = inflow − outflow. Small county-pair flows are suppressed by the IRS for privacy and shown blank.
Source: IRS SOI Migration Data. License: CC0 1.0.