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County-to-county migration · IRS SOI · filing years 2022-2023
Net migration: +185 tax returns · +251 people · +$20,734,000 AGI
| County | Returns | AGI |
|---|---|---|
| Gallatin County, MT | 134 | $7,550,000 |
| Missoula County, MT | 133 | $7,654,000 |
| Jefferson County, MT | 127 | $9,027,000 |
| Cascade County, MT | 85 | $4,851,000 |
| Yellowstone County, MT | 82 | $6,619,000 |
| Silver Bow County, MT | 53 | $3,067,000 |
| Broadwater County, MT | 53 | $2,791,000 |
| Flathead County, MT | 43 | $2,419,000 |
| Maricopa County, AZ | 39 | $3,488,000 |
| King County, WA | 31 | $2,934,000 |
| County | Returns | AGI |
|---|---|---|
| Missoula County, MT | 142 | $6,953,000 |
| Jefferson County, MT | 133 | $14,351,000 |
| Gallatin County, MT | 120 | $5,903,000 |
| Cascade County, MT | 107 | $5,767,000 |
| Yellowstone County, MT | 79 | $4,950,000 |
| Broadwater County, MT | 54 | $3,434,000 |
| Silver Bow County, MT | 51 | $2,144,000 |
| Flathead County, MT | 41 | $2,755,000 |
| King County, WA | 33 | $2,896,000 |
| Maricopa County, AZ | 33 | $3,662,000 |
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.