Colorado / Counties by Population

Colorado Counties by Population

The data is from the US Census. Below are 64 Colorado counties ranked 1 through 64. 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 Denver County 678,467
2 El Paso County 674,826
3 Arapahoe County 626,612
4 Jefferson County 564,029
5 Adams County 487,850
6 Larimer County 330,976
7 Douglas County 320,940
8 Boulder County 316,782
9 Weld County 285,729
10 Pueblo County 163,368
11 Mesa County 148,798
12 Broomfield County 64,283
13 Garfield County 57,945
14 La Plata County 54,469
15 Eagle County 53,726
16 Fremont County 46,601
17 Montrose County 40,908
18 Delta County 30,217
19 Summit County 29,722
20 Morgan County 28,123
21 Montezuma County 25,770
22 Elbert County 24,553
23 Routt County 24,359
24 Teller County 23,769
25 Logan County 21,885
26 Chaffee County 18,818
27 Otero County 18,325
28 Pitkin County 17,747
29 Park County 16,900
30 Alamosa County 16,345
31 Gunnison County 16,215
32 Grand County 14,793
33 Las Animas County 14,151
34 Moffat County 13,056
35 Archuleta County 12,592
36 Prowers County 12,084
37 Rio Grande County 11,430
38 Yuma County 10,109
39 Clear Creek County 9,257
40 Conejos County 8,147
41 Kit Carson County 7,846
42 San Miguel County 7,804
43 Lake County 7,481
44 Rio Blanco County 6,557
45 Huerfano County 6,498
46 Saguache County 6,338
47 Bent County 5,806
48 Gilpin County 5,793
49 Lincoln County 5,520
50 Crowley County 5,514
51 Washington County 4,809
52 Ouray County 4,653
53 Custer County 4,505
54 Phillips County 4,327
55 Costilla County 3,628
56 Baca County 3,581
57 Sedgwick County 2,357
58 Cheyenne County 2,127
59 Dolores County 1,736
60 Jackson County 1,372
61 Kiowa County 1,368
62 Mineral County 834
63 Hinsdale County 820
64 San Juan County 569

United States Census Bureau. B01001 SEX BY AGE, 2017 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 6 December 2018. http://www.census.gov/.

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