Montana county-to-county migration

56 Montana counties. Top 10 origin and destination counties for each. Census ACS 2020 5-yr migration flows.

Frozen vintage. The Census Bureau has not released a newer county-to-county migration flows file. The 2020 5-yr vintage (covering 2016-2020) is the latest available as of build date.

Counties (by population)

Yellowstone County pop. 167,340
Gallatin County pop. 122,194
Missoula County pop. 119,639
Flathead County pop. 108,445
Cascade County pop. 84,601
Lewis and Clark County pop. 72,580
Ravalli County pop. 45,807
Silver Bow County pop. 35,589
Lake County pop. 32,073
Lincoln County pop. 20,656
Park County pop. 17,484
Hill County pop. 16,260
Glacier County pop. 13,713
Big Horn County pop. 12,963
Sanders County pop. 12,936
Jefferson County pop. 12,501
Custer County pop. 11,938
Fergus County pop. 11,581
Richland County pop. 11,329
Carbon County pop. 10,877
Roosevelt County pop. 10,665
Beaverhead County pop. 9,590
Deer Lodge County pop. 9,512
Stillwater County pop. 9,052
Madison County pop. 8,975
Dawson County pop. 8,874
Rosebud County pop. 8,236
Valley County pop. 7,540
Broadwater County pop. 7,310
Powell County pop. 7,029
Blaine County pop. 6,997
Teton County pop. 6,291
Pondera County pop. 6,012
Chouteau County pop. 5,888
Musselshell County pop. 5,068
Toole County pop. 5,028
Mineral County pop. 4,796
Phillips County pop. 4,224
Sweet Grass County pop. 3,713
Sheridan County pop. 3,677
Granite County pop. 3,419
Fallon County pop. 2,817
Judith Basin County pop. 2,053
Wheatland County pop. 2,049
Meagher County pop. 1,979
Liberty County pop. 1,968
McCone County pop. 1,818
Powder River County pop. 1,762
Daniels County pop. 1,524
Carter County pop. 1,361
Prairie County pop. 1,251
Wibaux County pop. 1,148
Garfield County pop. 938
Golden Valley County pop. 840
Treasure County pop. 761
Petroleum County pop. 401

Source: U.S. Census Bureau, ACS County-to-County Migration Flows, 2020 5-yr (covering 2016-2020).