Massachusetts → King County, WA
Reported tax-filing households, individuals, and adjusted gross income that moved from Massachusetts to King County, WA, 2022–2023.
Households moved
1,215
People moved
1,487
Reported AGI moved
$146.35M
Avg. AGI per migrating return
$120,451
Avg. household size
1.22
Reported county-pair flows
9
County-by-county breakdown
| Origin | Destination | Households | People | Reported AGI |
|---|---|---|---|---|
| Middlesex County, MA | King County, WA | 486 | 633 | $68.07M |
| Suffolk County, MA | King County, WA | 387 | 443 | $43.79M |
| Norfolk County, MA | King County, WA | 110 | 145 | $15.73M |
| Worcester County, MA | King County, WA | 61 | 77 | $6.32M |
| Essex County, MA | King County, WA | 61 | 69 | $4.89M |
| Hampshire County, MA | King County, WA | 47 | 50 | $3.16M |
| Barnstable County, MA | King County, WA | 22 | 25 | $1.74M |
| Bristol County, MA | King County, WA | 21 | 22 | $1.64M |
| Hampden County, MA | King County, WA | 20 | 23 | $1.01M |
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.”