RANKING · 2010 CENSUS · 63 SHOWN OF 63

Highest American population share, Colorado counties · 2010

Colorado counties ranked by the share of all residents who are American ancestry (2010 American Community Survey). A concentration measure: American residents as a percentage of total population. This list covers the 63 counties in Colorado that qualify, ranked against each other statewide. The median across all 63 is 4.4%.

American ancestry: full group profile →

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SAME RANKING BYCities States Metros

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

YEAR2010 2020 2024

RANKPLACESTATEPOPAMERICAN SHAREVS –

01Dolores County, COCO2,46620.7%–

02San Miguel County, COCO7,75314.1%–

03Baca County, COCO3,3479.6%–

04Montezuma County, COCO26,6788.8%–

05Moffat County, COCO13,1228.6%–

06Jackson County, COCO1,2117.2%–

07La Plata County, COCO56,8987.2%–

08Mesa County, COCO162,8456.8%–

09Phillips County, COCO4,4206.7%–

10Rio Blanco County, COCO6,6836.7%–

11Kit Carson County, COCO7,0696.0%–

12Teller County, COCO24,7566.0%–

13Otero County, COCO17,6836.0%–

14Bent County, COCO5,7165.9%–

15Sedgwick County, COCO2,2475.8%–

16Broomfield County, COCO79,1745.6%–

17Mineral County, COCO9105.6%–

18Washington County, COCO4,7325.5%–

19Adams County, COCO554,6685.5%–

20Arapahoe County, COCO673,8205.4%–

21Delta County, COCO32,1785.2%–

22Yuma County, COCO9,8965.2%–

23Montrose County, COCO44,5915.1%–

24Park County, COCO18,3144.9%–

25Custer County, COCO5,5904.8%–

26El Paso County, COCO757,0404.7%–

27Douglas County, COCO399,3964.7%–

28Lincoln County, COCO5,6454.7%–

29Gunnison County, COCO17,4394.6%–

30Fremont County, COCO50,0394.6%–

31Weld County, COCO378,4264.5%–

32Rio Grande County, COCO11,0874.4%–

33Las Animas County, COCO14,3914.4%–

34Logan County, COCO20,6544.3%–

35Elbert County, COCO30,5344.0%–

36Jefferson County, COCO580,4514.0%–

37Grand County, COCO16,4964.0%–

38Larimer County, COCO377,2923.9%–

39Prowers County, COCO11,8843.8%–

40Garfield County, COCO63,4743.8%–

41Kiowa County, COCO1,4123.8%–

42Morgan County, COCO30,3063.7%–

43Costilla County, COCO3,6793.6%–

44Saguache County, COCO6,7323.5%–

45Chaffee County, COCO20,8313.5%–

46Alamosa County, COCO16,6883.4%–

47Denver County, COCO740,6133.3%–

48Boulder County, COCO328,5603.2%–

49Gilpin County, COCO6,0733.0%–

50Pueblo County, COCO169,2773.0%–

51Archuleta County, COCO14,3063.0%–

52Cheyenne County, COCO1,7132.9%–

53Ouray County, COCO5,2652.8%–

54Conejos County, COCO7,5292.6%–

55Pitkin County, COCO16,6252.5%–

56Huerfano County, COCO7,0112.5%–

57Clear Creek County, COCO8,9942.4%–

58Crowley County, COCO5,6772.4%–

59Routt County, COCO25,3292.1%–

60Lake County, COCO7,5521.9%–

61Eagle County, COCO54,2911.8%–

62Summit County, COCO31,5170.9%–

63Hinsdale County, COCO7530.8%–

SHOWING 1–63 OF 63

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