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 158,980
2 Missoula County 117,441
3 Gallatin County 107,810
4 Flathead County 100,000
5 Cascade County 81,654
6 Lewis and Clark County 67,773
7 Ravalli County 42,563
8 Silver Bow County 34,602
9 Lake County 30,273
10 Lincoln County 19,440
11 Hill County 16,463
12 Park County 16,353
13 Glacier County 13,640
14 Big Horn County 13,360
15 Jefferson County 11,891
16 Custer County 11,721
17 Sanders County 11,711
18 Fergus County 11,291
19 Roosevelt County 11,098
20 Richland County 11,039
21 Carbon County 10,696
22 Beaverhead County 9,434
23 Stillwater County 9,419
24 Rosebud County 9,248
25 Deer Lodge County 9,106
26 Dawson County 8,950
27 Madison County 8,175
28 Valley County 7,433
29 Powell County 6,795
30 Blaine County 6,708
31 Teton County 6,085
32 Pondera County 5,960
33 Broadwater County 5,936
34 Chouteau County 5,765
35 Toole County 4,886
36 Musselshell County 4,639
37 Mineral County 4,255
38 Phillips County 4,119
39 Sweet Grass County 3,691
40 Sheridan County 3,469
41 Granite County 3,358
42 Fallon County 3,009
43 Liberty County 2,427
44 Wheatland County 2,140
45 Judith Basin County 1,961
46 Meagher County 1,851
47 Powder River County 1,752
48 Daniels County 1,737
49 McCone County 1,718
50 Garfield County 1,293
51 Carter County 1,222
52 Prairie County 1,109
53 Wibaux County 1,020
54 Golden Valley County 822
55 Treasure County 679
56 Petroleum County 523

United States Census Bureau / American FactFinder. "Annual Estimates of the Resident Population: April 1, 2010 to July 1, 2017". 2017 Population Estimates Program. Web. March 2018. http://factfinder2.census.gov.

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