Montana → King County, WA
Reported tax-filing households, individuals, and adjusted gross income that moved from Montana to King County, WA, 2022–2023.
Households moved
380
People moved
515
Reported AGI moved
$29.83M
Avg. AGI per migrating return
$78,492
Avg. household size
1.36
Reported county-pair flows
7
County-by-county breakdown
| Origin | Destination | Households | People | Reported AGI |
|---|---|---|---|---|
| Gallatin County, MT | King County, WA | 117 | 149 | $8.99M |
| Flathead County, MT | King County, WA | 49 | 71 | $7.41M |
| Missoula County, MT | King County, WA | 84 | 107 | $4.19M |
| Lewis and Clark County, MT | King County, WA | 33 | 50 | $2.90M |
| Yellowstone County, MT | King County, WA | 52 | 63 | $2.66M |
| Cascade County, MT | King County, WA | 25 | 48 | $2.27M |
| Ravalli County, MT | King County, WA | 20 | 27 | $1.41M |
IRS migration data does not represent every U.S. resident (non-filers are underrepresented), a mailing address does not always equal a physical residence, and AGI reflects Year 2 tax returns without proving income was earned after arrival. Use “income moved” or “reported AGI moved,” not “economic impact created.”