Federal Data Hub › IRS Migration Flows · JSON
County-to-county migration · IRS SOI · filing years 2022-2023
Net migration: -61 tax returns · -51 people · $-5,526,000 AGI
| County | Returns | AGI |
|---|---|---|
| Marshall County, IA | 60 | $3,053,000 |
| Black Hawk County, IA | 57 | $3,494,000 |
| Benton County, IA | 29 | $1,638,000 |
| Linn County, IA | 24 | $886,000 |
| Polk County, IA | 20 | $586,000 |
| County | Returns | AGI |
|---|---|---|
| Marshall County, IA | 88 | $5,371,000 |
| Black Hawk County, IA | 67 | $4,300,000 |
| Linn County, IA | 38 | $1,606,000 |
| Polk County, IA | 29 | $2,030,000 |
| Grundy County, IA | 21 | $1,005,000 |
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.