RANKING · 2024 ACS · 63 SHOWN OF 63

Highest Scotch-Irish population share, Colorado counties

Colorado counties ranked by the share of all residents who are Scotch-Irish ancestry (2023 American Community Survey). A concentration measure: Scotch-Irish 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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RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPSCOTCH-IRISH SHAREVS 2000

01Hinsdale County, COCO7533.9%–

02Dolores County, COCO2,4663.4%–

03Clear Creek County, COCO8,9943.0%–

04Saguache County, COCO6,7322.8%–

05Crowley County, COCO5,6772.7%–

06Ouray County, COCO5,2652.7%–

07Archuleta County, COCO14,3062.4%–

08Pitkin County, COCO16,6251.9%–

09Mineral County, COCO9101.8%–

10Chaffee County, COCO20,8311.7%–

11Lincoln County, COCO5,6451.7%–

12Grand County, COCO16,4961.5%–

13Gunnison County, COCO17,4391.5%–

14Teller County, COCO24,7561.5%–

15Mesa County, COCO162,8451.4%–

16Gilpin County, COCO6,0731.4%–

17Larimer County, COCO377,2921.3%–

18Elbert County, COCO30,5341.3%–

19Garfield County, COCO63,4741.3%–

20Park County, COCO18,3141.3%–

21Costilla County, COCO3,6791.2%–

22San Juan County, COCO8131.2%–

23Montrose County, COCO44,5911.2%–

24Lake County, COCO7,5521.2%–

25Montezuma County, COCO26,6781.2%–

26Cheyenne County, COCO1,7131.2%–

27Logan County, COCO20,6541.2%–

28Jefferson County, COCO580,4511.2%–

29Routt County, COCO25,3291.2%–

30Moffat County, COCO13,1221.2%–

31Otero County, COCO17,6831.1%–

32Boulder County, COCO328,5601.1%–

33Fremont County, COCO50,0391.1%–

34El Paso County, COCO757,0401.1%–

35La Plata County, COCO56,8981.0%–

36Broomfield County, COCO79,1741.0%–

37Delta County, COCO32,1781.0%–

38Morgan County, COCO30,3060.9%–

39Arapahoe County, COCO673,8200.9%–

40Douglas County, COCO399,3960.9%–

41Pueblo County, COCO169,2770.9%–

42Sedgwick County, COCO2,2470.8%–

43Baca County, COCO3,3470.8%–

44Weld County, COCO378,4260.8%–

45Denver County, COCO740,6130.7%–

46Yuma County, COCO9,8960.7%–

47Huerfano County, COCO7,0110.7%–

48Washington County, COCO4,7320.7%–

49Alamosa County, COCO16,6880.7%–

50Las Animas County, COCO14,3910.6%–

51Rio Grande County, COCO11,0870.6%–

52Phillips County, COCO4,4200.6%–

53San Miguel County, COCO7,7530.5%–

54Adams County, COCO554,6680.5%–

55Rio Blanco County, COCO6,6830.5%–

56Custer County, COCO5,5900.5%–

57Kit Carson County, COCO7,0690.5%–

58Summit County, COCO31,5170.5%–

59Bent County, COCO5,7160.4%–

60Prowers County, COCO11,8840.4%–

61Conejos County, COCO7,5290.3%–

62Eagle County, COCO54,2910.3%–

63Kiowa County, COCO1,4120.1%–

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