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County-to-county migration · IRS SOI · filing years 2022-2023
Net migration: +648 tax returns · +1,275 people · +$117,895,000 AGI
| County | Returns | AGI |
|---|---|---|
| King County, WA | 1,360 | $178,113,000 |
| Pierce County, WA | 1,090 | $83,905,000 |
| Snohomish County, WA | 324 | $26,262,000 |
| San Diego County, CA | 282 | $21,558,000 |
| Mason County, WA | 281 | $18,296,000 |
| Maricopa County, AZ | 163 | $14,770,000 |
| Honolulu County, HI | 157 | $11,749,000 |
| Thurston County, WA | 150 | $9,434,000 |
| Los Angeles County, CA | 145 | $15,517,000 |
| Jefferson County, WA | 142 | $10,797,000 |
| County | Returns | AGI |
|---|---|---|
| King County, WA | 960 | $93,899,000 |
| Pierce County, WA | 871 | $69,152,000 |
| San Diego County, CA | 463 | $32,158,000 |
| Mason County, WA | 382 | $26,269,000 |
| Snohomish County, WA | 245 | $17,920,000 |
| Maricopa County, AZ | 190 | $15,715,000 |
| Jefferson County, WA | 146 | $13,357,000 |
| Thurston County, WA | 133 | $8,571,000 |
| Whatcom County, WA | 109 | $5,526,000 |
| Los Angeles County, CA | 99 | $7,662,000 |
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.