Montana Net Migration By County in 2021

Updated on July 29, 2024.

According to the US Census Bureau estimates, in 2021, the net migration for Montana was 21,088. Flathead County had the highest net migration (4,132) followed by Gallatin County (3,057), and Yellowstone County (2,295). On the other hand, Richland County had the lowest net migration (-228), followed by Rosebud County (-192), and Big Horn County (-132).

Net migration for a county refers to the difference between the number of migrants, both domestic and international, moving to the county and those leaving the county. Or to put it simply, the net migration for a given county is the inbound migration minus the outbound migration for that county.

You can also see similar information for other states and also by state for the United States.

Hover over or click on the chart to see this information for each county. The data can also be filtered, sorted, and explored further in a table below.

See this for other years:
Montana Net Migration By County in 2021
Montana Net Migration By County in 2021
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County Net Migration
Beaverhead 204
Big Horn -132
Blaine -22
Broadwater 483
Carbon 432
Carter 14
Cascade 230
Chouteau 48
Custer 138
Daniels 34
Dawson -15
Deer Lodge 170
Fallon -28
Fergus 214
Flathead 4132
Gallatin 3057
Garfield 41
Glacier -2
Golden Valley 4
Granite 58
Hill -117
Jefferson 411
Judith Basin 19
Lake 931
Lewis and Clark 1400
Liberty -27
Lincoln 1035
McCone -21
Madison 350
Meagher 46
Mineral 343
Missoula 1389
Musselshell 203
Park 381
Petroleum 22
Phillips 14
Pondera 147
Powder River 19
Powell 123
Prairie 20
Ravalli 2004
Richland -228
Roosevelt 30
Rosebud -192
Sanders 645
Sheridan 41
Silver Bow 500
Stillwater 64
Sweet Grass 68
Teton 37
Toole 43
Treasure 10
Valley 31
Wheatland -20
Wibaux 12
Yellowstone 2295