Federal Data Hub › IRS Migration Flows · JSON

Fergus County, MT

County-to-county migration · IRS SOI · filing years 2022-2023

Net migration: +26 tax returns · +35 people · +$3,114,000 AGI

Inflow
307 returns · 498 people · $19,190,000 AGI
Outflow
281 returns · 463 people · $16,076,000 AGI

Top origins (where new residents came from)

CountyReturnsAGI
Yellowstone County, MT28$1,540,000

Top destinations (where leavers went)

CountyReturnsAGI
Yellowstone County, MT42$2,473,000
Cascade County, MT22$1,309,000

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.