Colorado Counties by Population

List the counties of Colorado in order of population, from most to least.
Populations are from 2020 US Census
Two answers are considered a consolidated city-county
Quiz by
fowlereid
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Last updated: April 1, 2022
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First submittedApril 1, 2022
Times taken54
Average score60.3%
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Population
County
730,395
El Paso
715,522
Denver
655,070
Arapahoe
582,910
Jefferson
519,572
Adams
359,066
Larimer
357,978
Douglas
330,758
Boulder
328,981
Weld
168,162
Pueblo
155,703
Mesa
74,112
Broomfield
61,685
Garfield
55,731
Eagle
55,638
La Plata
48,939
Fremont
42,679
Montrose
31,196
Delta
31,055
Summit
29,111
Morgan
26,062
Elbert
25,849
Montezuma
24,829
Routt
24,710
Teller
21,528
Logan
19,476
Chaffee
18,690
Otero
17,390
Park
17,358
Pitkin
16,918
Gunnison
15,717
Grand
14,555
Las Animas
13,359
Archuleta
13,292
Moffat
11,999
Prowers
11,539
Rio Grande
9,988
Yuma
9,397
Clear Creek
8,072
San Miguel
7,461
Conejos
7,436
Lake
7,087
Kit Carson
6,820
Huerfano
6,529
Rio Blanco
6,368
Saguache
5,922
Crowley
5,808
Gilpin
5,675
Lincoln
5,650
Bent
4,874
Ouray
4,817
Washington
4,704
Custer
4,530
Phillips
3,506
Baca
3,499
Costilla
2,404
Sedgwick
2,326
Dolores
1,748
Cheyenne
1,446
Kiowa
1,379
Jackson
865
Mineral
788
Hinsdale
705
San Juan
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2 Comments
+1
Level 79
Mar 5, 2025
No Alamosa County
+1
Level 36
Apr 17, 2025
Where's Alamosa County?