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County-to-county migration · IRS SOI · filing years 2022-2023
Net migration: -5 tax returns · +52 people · +$13,633,000 AGI
| County | Returns | AGI |
|---|---|---|
| Sonoma County, CA | 281 | $18,398,000 |
| Mendocino County, CA | 141 | $6,295,000 |
| Napa County, CA | 62 | $3,143,000 |
| Sacramento County, CA | 61 | $3,424,000 |
| Contra Costa County, CA | 39 | $4,174,000 |
| Alameda County, CA | 38 | $3,907,000 |
| Solano County, CA | 35 | $2,552,000 |
| Santa Clara County, CA | 32 | $1,952,000 |
| San Mateo County, CA | 29 | $2,644,000 |
| Los Angeles County, CA | 27 | $2,118,000 |
| County | Returns | AGI |
|---|---|---|
| Sonoma County, CA | 178 | $10,727,000 |
| Mendocino County, CA | 122 | $5,920,000 |
| Sacramento County, CA | 66 | $3,716,000 |
| Solano County, CA | 40 | $2,128,000 |
| Napa County, CA | 35 | $2,363,000 |
| Butte County, CA | 29 | $932,000 |
| Los Angeles County, CA | 28 | $1,745,000 |
| Placer County, CA | 23 | $1,521,000 |
| Contra Costa County, CA | 23 | $1,056,000 |
| Humboldt County, CA | 22 | $1,183,000 |
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.