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County-to-county migration · IRS SOI · filing years 2022-2023
Net migration: +355 tax returns · +569 people · +$82,399,000 AGI
| County | Returns | AGI |
|---|---|---|
| King County, WA | 241 | $23,969,000 |
| Pierce County, WA | 93 | $8,790,000 |
| Jefferson County, WA | 93 | $8,444,000 |
| Snohomish County, WA | 90 | $6,674,000 |
| Kitsap County, WA | 84 | $6,123,000 |
| Thurston County, WA | 49 | $2,709,000 |
| Los Angeles County, CA | 45 | $4,461,000 |
| Whatcom County, WA | 41 | $2,021,000 |
| San Diego County, CA | 38 | $3,157,000 |
| Maricopa County, AZ | 36 | $2,643,000 |
| County | Returns | AGI |
|---|---|---|
| King County, WA | 150 | $10,555,000 |
| Kitsap County, WA | 99 | $6,788,000 |
| Jefferson County, WA | 80 | $5,223,000 |
| Pierce County, WA | 79 | $4,928,000 |
| Snohomish County, WA | 67 | $4,078,000 |
| Thurston County, WA | 50 | $3,010,000 |
| Whatcom County, WA | 47 | $2,716,000 |
| Maricopa County, AZ | 36 | $1,964,000 |
| Spokane County, WA | 35 | $1,654,000 |
| Clark County, WA | 34 | $2,522,000 |
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.