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County-to-county migration · IRS SOI · filing years 2022-2023
Net migration: +1 tax returns · -104 people · +$3,070,000 AGI
| County | Returns | AGI |
|---|---|---|
| Missoula County, MT | 109 | $6,333,000 |
| Lewis and Clark County, MT | 107 | $5,767,000 |
| Gallatin County, MT | 100 | $5,256,000 |
| Yellowstone County, MT | 69 | $2,878,000 |
| Teton County, MT | 54 | $2,943,000 |
| Hill County, MT | 46 | $2,468,000 |
| Flathead County, MT | 42 | $2,202,000 |
| Maricopa County, AZ | 42 | $2,618,000 |
| El Paso County, CO | 41 | $2,199,000 |
| Glacier County, MT | 37 | $4,267,000 |
| County | Returns | AGI |
|---|---|---|
| Missoula County, MT | 93 | $6,037,000 |
| Yellowstone County, MT | 85 | $4,722,000 |
| Lewis and Clark County, MT | 85 | $4,851,000 |
| Gallatin County, MT | 77 | $3,960,000 |
| Flathead County, MT | 46 | $2,333,000 |
| Teton County, MT | 45 | $2,401,000 |
| Maricopa County, AZ | 44 | $2,408,000 |
| Bexar County, TX | 40 | $2,148,000 |
| Spokane County, WA | 37 | $1,689,000 |
| Hill County, MT | 37 | $1,205,000 |
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.