RANKING · 2020 CENSUS · 62 SHOWN OF 62

Highest Scotch-Irish population share, Colorado counties · 2020

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 62 counties in Colorado that qualify, ranked against each other statewide.

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SAME RANKING BYCities States Metros

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

01Clear Creek County, COCO8,9943.0%–

02Archuleta County, COCO14,3062.6%–

03Chaffee County, COCO20,8312.5%–

04San Juan County, COCO8132.3%–

05Jackson County, COCO1,2112.3%–

06Washington County, COCO4,7322.2%–

07Custer County, COCO5,5902.2%–

08Mineral County, COCO9102.1%–

09Pitkin County, COCO16,6252.0%–

10Routt County, COCO25,3291.8%–

11San Miguel County, COCO7,7531.8%–

12Mesa County, COCO162,8451.7%–

13Gunnison County, COCO17,4391.6%–

14Crowley County, COCO5,6771.5%–

15Larimer County, COCO377,2921.5%–

16Boulder County, COCO328,5601.5%–

17Elbert County, COCO30,5341.5%–

18Moffat County, COCO13,1221.5%–

19Teller County, COCO24,7561.4%–

20Logan County, COCO20,6541.4%–

21Ouray County, COCO5,2651.4%–

22Otero County, COCO17,6831.4%–

23Montezuma County, COCO26,6781.3%–

24Rio Blanco County, COCO6,6831.3%–

25Dolores County, COCO2,4661.3%–

26Grand County, COCO16,4961.3%–

27Gilpin County, COCO6,0731.3%–

28Fremont County, COCO50,0391.2%–

29Lake County, COCO7,5521.2%–

30Jefferson County, COCO580,4511.2%–

31El Paso County, COCO757,0401.2%–

32Douglas County, COCO399,3961.1%–

33Prowers County, COCO11,8841.1%–

34Arapahoe County, COCO673,8201.1%–

35Montrose County, COCO44,5911.1%–

36Weld County, COCO378,4261.1%–

37Baca County, COCO3,3471.1%–

38Saguache County, COCO6,7321.1%–

39Broomfield County, COCO79,1741.0%–

40Morgan County, COCO30,3061.0%–

41Denver County, COCO740,6130.9%–

42Delta County, COCO32,1780.9%–

43Pueblo County, COCO169,2770.9%–

44Eagle County, COCO54,2910.9%–

45La Plata County, COCO56,8980.9%–

46Bent County, COCO5,7160.9%–

47Las Animas County, COCO14,3910.9%–

48Park County, COCO18,3140.8%–

49Sedgwick County, COCO2,2470.8%–

50Huerfano County, COCO7,0110.8%–

51Summit County, COCO31,5170.8%–

52Phillips County, COCO4,4200.7%–

53Costilla County, COCO3,6790.7%–

54Adams County, COCO554,6680.7%–

55Kit Carson County, COCO7,0690.7%–

56Garfield County, COCO63,4740.6%–

57Lincoln County, COCO5,6450.6%–

58Conejos County, COCO7,5290.5%–

59Alamosa County, COCO16,6880.5%–

60Rio Grande County, COCO11,0870.5%–

61Hinsdale County, COCO7530.3%–

62Yuma County, COCO9,8960.2%–

SHOWING 1–62 OF 62

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