Montana Net International Migration By County in 2018

Updated on June 21, 2025.

According to the US Census Bureau estimates, in 2018, the net international migration for Montana was 435. Missoula County had the highest net international migration (124) followed by Gallatin County (118), and Yellowstone County (69). On the other hand, Cascade County had the lowest net international migration (-28), followed by Flathead County (-7), and Richland County (-3).

Net International migration for a given county refers to the difference between the number of people moving to the county from other parts of the world outside the borders of the United States (50 states and District of Columbia) and the number of people moving out of the county to other parts of the world outside the borders of the United States.

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 International Migration By County in 2018
Montana Net International Migration By County in 2018
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County Net International Migration
Beaverhead 6
Big Horn 4
Blaine 1
Broadwater 0
Carbon 4
Carter 0
Cascade -28
Chouteau 0
Custer 0
Daniels 0
Dawson 0
Deer Lodge -2
Fallon 1
Fergus 7
Flathead -7
Gallatin 118
Garfield 0
Glacier 2
Golden Valley 0
Granite 0
Hill 10
Jefferson -1
Judith Basin 0
Lake 11
Lewis and Clark 13
Liberty 0
Lincoln 12
McCone 0
Madison 12
Meagher 1
Mineral -1
Missoula 124
Musselshell 0
Park 0
Petroleum 0
Phillips 0
Pondera 3
Powder River 0
Powell 1
Prairie 0
Ravalli 9
Richland -3
Roosevelt 6
Rosebud 9
Sanders 1
Sheridan 0
Silver Bow 36
Stillwater 5
Sweet Grass 0
Teton 9
Toole 0
Treasure 0
Valley 3
Wheatland 0
Wibaux 0
Yellowstone 69