Cook County, IL → Washington
Reported tax-filing households, individuals, and adjusted gross income that moved from Cook County, IL to Washington, 2022–2023.
Households moved
1,314
People moved
1,735
Reported AGI moved
$153.03M
Avg. AGI per migrating return
$116,458
Avg. household size
1.32
Reported county-pair flows
8
County-by-county breakdown
| Origin | Destination | Households | People | Reported AGI |
|---|---|---|---|---|
| Cook County, IL | King County, WA | 954 | 1,209 | $120.74M |
| Cook County, IL | Snohomish County, WA | 94 | 151 | $11.30M |
| Cook County, IL | Pierce County, WA | 86 | 124 | $6.14M |
| Cook County, IL | Kitsap County, WA | 36 | 54 | $4.17M |
| Cook County, IL | Whatcom County, WA | 36 | 50 | $3.89M |
| Cook County, IL | Clark County, WA | 46 | 55 | $3.21M |
| Cook County, IL | Spokane County, WA | 32 | 48 | $2.02M |
| Cook County, IL | Thurston County, WA | 30 | 44 | $1.56M |
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.”