King County, WA → Illinois
Reported tax-filing households, individuals, and adjusted gross income that moved from King County, WA to Illinois, 2022–2023.
Households moved
966
People moved
1,326
Reported AGI moved
$118.40M
Avg. AGI per migrating return
$122,564
Avg. household size
1.37
Reported county-pair flows
6
County-by-county breakdown
| Origin | Destination | Households | People | Reported AGI |
|---|---|---|---|---|
| King County, WA | Cook County, IL | 750 | 981 | $90.54M |
| King County, WA | Lake County, IL | 55 | 97 | $9.87M |
| King County, WA | DuPage County, IL | 71 | 105 | $9.13M |
| King County, WA | Champaign County, IL | 43 | 62 | $3.54M |
| King County, WA | Will County, IL | 24 | 39 | $2.98M |
| King County, WA | Kane County, IL | 23 | 42 | $2.34M |
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.”