Williamson County, IL → St. Clair County, IL
Reported tax-filing households, individuals, and adjusted gross income that moved from Williamson County, IL to St. Clair County, IL, 2022–2023.
Households moved
39
People moved
63
Reported AGI moved
$2.30M
Avg. AGI per migrating return
$58,872
Avg. household size
1.62
Reported county-pair flows
1
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.”