Colorado / Counties by Population

Colorado Counties by Population

Below are the 64 Colorado counties sorted by population from 1 to 64 . The population data are from the 2021 Population Estimates Program and 2020 American Community Survey. 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 El Paso County 737,867
2 Denver County 711,463
3 Arapahoe County 654,900
4 Jefferson County 579,581
5 Adams County 522,140
6 Douglas County 368,990
7 Larimer County 362,533
8 Weld County 340,036
9 Boulder County 329,543
10 Pueblo County 169,622
11 Mesa County 157,335
12 Broomfield County 75,325
13 Garfield County 62,161
14 La Plata County 56,250
15 Eagle County 55,727
16 Fremont County 49,661
17 Montrose County 43,168
18 Delta County 31,661
19 Summit County 30,941
20 Morgan County 29,008
21 Elbert County 27,128
22 Montezuma County 26,175
23 Routt County 25,091
24 Teller County 24,926
25 Logan County 21,487
26 Chaffee County 20,074
27 Otero County 18,594
28 Park County 17,720
29 Pitkin County 17,348
30 Gunnison County 17,281
31 Alamosa County 16,547
32 Grand County 15,860
33 Las Animas County 14,633
34 Archuleta County 13,790
35 Moffat County 13,185
36 Prowers County 11,996
37 Rio Grande County 11,408
38 Yuma County 9,941
39 Clear Creek County 9,446
40 San Miguel County 8,074
41 Conejos County 7,612
42 Lake County 7,407
43 Kit Carson County 6,950
44 Huerfano County 6,920
45 Rio Blanco County 6,476
46 Saguache County 6,471
47 Crowley County 6,012
48 Gilpin County 5,873
49 Bent County 5,759
50 Lincoln County 5,688
51 Custer County 5,045
52 Ouray County 5,035
53 Washington County 4,861
54 Phillips County 4,512
55 Costilla County 3,625
56 Baca County 3,514
57 Dolores County 2,397
58 Sedgwick County 2,336
59 Cheyenne County 1,707
60 Kiowa County 1,452
61 Jackson County 1,363
62 Mineral County 924
63 Hinsdale County 781
64 San Juan County 733

United States Census Bureau. B01001 SEX BY AGE, 2020 American Community Survey 5-Year Estimates. U.S. Census Bureau, American Community Survey Office. Web. 17 March 2022. http://www.census.gov/.

United States Census Bureau. Annual Estimates of the Resident Population: April 1, 2020 to July 1, 2021. U.S. Census Bureau, Population Division. Web. May 2022. http://www.census.gov/.

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