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 716,492
2 El Paso County 713,856
3 Arapahoe County 651,215
4 Jefferson County 580,233
5 Adams County 511,868
6 Larimer County 350,518
7 Douglas County 342,776
8 Boulder County 326,078
9 Weld County 314,305
10 Pueblo County 167,529
11 Mesa County 153,207
12 Broomfield County 69,267
13 Garfield County 59,770
14 La Plata County 56,310
15 Eagle County 54,993
16 Fremont County 48,021
17 Montrose County 42,214
18 Summit County 31,007
19 Delta County 30,953
20 Morgan County 28,558
21 Elbert County 26,282
22 Montezuma County 26,158
23 Routt County 25,733
24 Teller County 25,083
25 Logan County 21,528
26 Chaffee County 20,027
27 Park County 18,556
28 Otero County 18,432
29 Pitkin County 17,950
30 Gunnison County 17,246
31 Alamosa County 16,683
32 Grand County 15,525
33 Las Animas County 14,503
34 Archuleta County 13,765
35 Moffat County 13,188
36 Prowers County 12,164
37 Rio Grande County 11,250
38 Yuma County 10,020
39 Clear Creek County 9,605
40 Conejos County 8,200
41 San Miguel County 8,191
42 Lake County 7,824
43 Kit Carson County 7,163
44 Huerfano County 6,889
45 Saguache County 6,843
46 Rio Blanco County 6,336
47 Gilpin County 6,121
48 Bent County 5,882
49 Crowley County 5,858
50 Lincoln County 5,610
51 Custer County 4,954
52 Washington County 4,909
53 Ouray County 4,833
54 Phillips County 4,286
55 Costilla County 3,828
56 Baca County 3,585
57 Sedgwick County 2,303
58 Dolores County 2,074
59 Cheyenne County 1,876
60 Jackson County 1,399
61 Kiowa County 1,383
62 Hinsdale County 811
63 Mineral County 776
64 San Juan County 762

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/.

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/.

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