RANKING · 2020 CENSUS · 64 SHOWN OF 64

Largest American population, Colorado counties · 2020

Colorado counties ranked by the number of residents who are American ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 64 counties in Colorado that qualify, ranked against each other statewide. The median across all 64 is 545.

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SAME RANKING BYCities States Metros

RELATEDHighest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share Largest Iraqi population

YEAR2010 2020 2024

RANKPLACESTATEPOPAMERICAN POPULATIONVS 2010

01El Paso County, COCO757,04031,567+12%

02Arapahoe County, COCO673,82028,033−7%

03Jefferson County, COCO580,45120,678−2%

04Denver County, COCO740,61319,816+3%

05Adams County, COCO554,66816,056−32%

06Larimer County, COCO377,29214,936+31%

07Weld County, COCO378,42614,074+29%

08Douglas County, COCO399,39613,155+2%

09Boulder County, COCO328,56010,211+11%

10Mesa County, COCO162,8456,680−31%

11Pueblo County, COCO169,2776,261+34%

12Montezuma County, COCO26,6783,787+71%

13Montrose County, COCO44,5912,586+25%

14La Plata County, COCO56,8982,427−33%

15Broomfield County, COCO79,1742,216−25%

16Garfield County, COCO63,4742,036−2%

17Morgan County, COCO30,3061,753+68%

18Eagle County, COCO54,2911,687+88%

19Fremont County, COCO50,0391,607−25%

20Delta County, COCO32,1781,525−4%

21Elbert County, COCO30,5341,409+54%

22Moffat County, COCO13,1221,051−9%

23Otero County, COCO17,6831,001−11%

24Teller County, COCO24,756895−35%

25Chaffee County, COCO20,831840+38%

26Prowers County, COCO11,884790+62%

27San Miguel County, COCO7,753755−27%

28Logan County, COCO20,654742−23%

29Park County, COCO18,314613−24%

30Gunnison County, COCO17,439591−14%

31Summit County, COCO31,517577+149%

32Gilpin County, COCO6,073545+254%

33Routt County, COCO25,3294810%

34Alamosa County, COCO16,688471−9%

35Las Animas County, COCO14,391446−35%

36Archuleta County, COCO14,306434+20%

37Pitkin County, COCO16,625431+4%

38Dolores County, COCO2,466412−2%

39Kit Carson County, COCO7,069400−18%

40Yuma County, COCO9,896336−35%

41Clear Creek County, COCO8,994301+40%

42Rio Grande County, COCO11,087301−42%

43Ouray County, COCO5,265280+133%

44Saguache County, COCO6,732276+28%

45Grand County, COCO16,496243−58%

46Custer County, COCO5,590239+28%

47Bent County, COCO5,716236−35%

48Phillips County, COCO4,420220−26%

49Rio Blanco County, COCO6,683194−56%

50Conejos County, COCO7,529184−12%

51Crowley County, COCO5,677182+31%

52Costilla County, COCO3,679176+39%

53Huerfano County, COCO7,011161−7%

54Washington County, COCO4,732161−39%

55Baca County, COCO3,347160−57%

56Lincoln County, COCO5,645127−51%

57Cheyenne County, COCO1,71385+33%

58Kiowa County, COCO1,41270+13%

59Lake County, COCO7,55268−50%

60Sedgwick County, COCO2,24767−52%

61San Juan County, COCO81311–

62Mineral County, COCO9109−84%

63Jackson County, COCO1,2116−94%

64Hinsdale County, COCO7532−50%

SHOWING 1–64 OF 64

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UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS