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County-to-county migration · IRS SOI · filing years 2022-2023
Net migration: -227 tax returns · -365 people · $-13,988,000 AGI
| County | Returns | AGI |
|---|---|---|
| Williamson County, IL | 239 | $10,069,000 |
| Cook County, IL | 82 | $1,925,000 |
| Perry County, IL | 55 | $2,151,000 |
| Franklin County, IL | 46 | $1,439,000 |
| Union County, IL | 44 | $1,602,000 |
| Randolph County, IL | 35 | $1,517,000 |
| St. Clair County, IL | 26 | $1,564,000 |
| St. Louis County, MO | 23 | $1,784,000 |
| DuPage County, IL | 22 | $714,000 |
| Sangamon County, IL | 20 | $606,000 |
| County | Returns | AGI |
|---|---|---|
| Williamson County, IL | 277 | $12,936,000 |
| Cook County, IL | 91 | $2,753,000 |
| Perry County, IL | 67 | $2,411,000 |
| Union County, IL | 43 | $2,029,000 |
| Franklin County, IL | 41 | $1,567,000 |
| St. Clair County, IL | 40 | $2,564,000 |
| Randolph County, IL | 35 | $1,396,000 |
| Sangamon County, IL | 31 | $1,038,000 |
| St. Louis city, MO | 30 | $1,148,000 |
| Cape Girardeau County, MO | 27 | $1,024,000 |
IRS migration data tracks where tax filers lived in consecutive years. A "return" is roughly a household; "AGI" is the adjusted gross income that moved with them. Net migration = inflow − outflow. Small county-pair flows are suppressed by the IRS for privacy and shown blank.
Source: IRS SOI Migration Data. License: CC0 1.0.