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 (2023 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.

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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 2000

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 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES