Montana / Counties by Population

Montana Counties by Population

The data is from the US Census. Below are 56 Montana counties ranked 1 through 56 . You can copy and paste this list directly into your favorite spreadsheet program. Don't you just adore lovely numbers listed nicely in columns & rows? We do!

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Rank County Population
1 Yellowstone County 157,816
2 Missoula County 115,983
3 Gallatin County 104,729
4 Flathead County 98,082
5 Cascade County 81,746
6 Lewis and Clark County 67,077
7 Ravalli County 41,902
8 Silver Bow County 34,814
9 Lake County 29,774
10 Lincoln County 19,358
11 Hill County 16,439
12 Park County 16,246
13 Glacier County 13,699
14 Big Horn County 13,376
15 Custer County 11,845
16 Jefferson County 11,778
17 Sanders County 11,521
18 Richland County 11,360
19 Fergus County 11,273
20 Roosevelt County 11,228
21 Carbon County 10,546
22 Stillwater County 9,410
23 Beaverhead County 9,393
24 Rosebud County 9,250
25 Dawson County 9,191
26 Deer Lodge County 9,100
27 Madison County 8,218
28 Valley County 7,532
29 Powell County 6,861
30 Blaine County 6,727
31 Teton County 6,080
32 Pondera County 6,044
33 Broadwater County 5,834
34 Chouteau County 5,789
35 Toole County 4,976
36 Musselshell County 4,807
37 Mineral County 4,211
38 Phillips County 4,124
39 Sweet Grass County 3,653
40 Sheridan County 3,574
41 Granite County 3,269
42 Fallon County 2,838
43 Liberty County 2,280
44 Wheatland County 2,149
45 Meagher County 1,968
46 Judith Basin County 1,951
47 Daniels County 1,753
48 McCone County 1,630
49 Powder River County 1,619
50 Prairie County 1,342
51 Carter County 1,318
52 Wibaux County 1,175
53 Garfield County 1,141
54 Treasure County 777
55 Golden Valley County 724
56 Petroleum County 432

United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2018. U.S. Census Bureau, Population Division. Web. May 2019. http://www.census.gov/.

United States Census Bureau. B01001 SEX BY AGE, 2018 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 19 December 2019. http://www.census.gov/.

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