RANKING · 2020 CENSUS · 62 SHOWN OF 62

Largest Scotch-Irish population, Colorado counties · 2020

Colorado counties ranked by the number of residents who are Scotch-Irish ancestry, from the 2023 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. 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 POPULATIONVS 2000

01El Paso County, COCO757,0408,309–

02Arapahoe County, COCO673,8207,138–

03Jefferson County, COCO580,4516,787–

04Denver County, COCO740,6136,721–

05Larimer County, COCO377,2925,296–

06Boulder County, COCO328,5604,874–

07Douglas County, COCO399,3963,925–

08Adams County, COCO554,6683,674–

09Weld County, COCO378,4263,373–

10Mesa County, COCO162,8452,526–

11Pueblo County, COCO169,2771,553–

12Broomfield County, COCO79,174724–

13Fremont County, COCO50,039589–

14La Plata County, COCO56,898516–

15Eagle County, COCO54,291507–

16Chaffee County, COCO20,831505–

17Montrose County, COCO44,591462–

18Routt County, COCO25,329458–

19Elbert County, COCO30,534387–

20Pitkin County, COCO16,625368–

21Garfield County, COCO63,474367–

22Teller County, COCO24,756358–

23Montezuma County, COCO26,678352–

24Archuleta County, COCO14,306347–

25Logan County, COCO20,654314–

26Morgan County, COCO30,306289–

27Delta County, COCO32,178287–

28Clear Creek County, COCO8,994283–

29Gunnison County, COCO17,439272–

30Otero County, COCO17,683250–

31Summit County, COCO31,517244–

32Grand County, COCO16,496204–

33Moffat County, COCO13,122192–

34Park County, COCO18,314153–

35San Miguel County, COCO7,753143–

36Prowers County, COCO11,884136–

37Las Animas County, COCO14,391130–

38Custer County, COCO5,590107–

39Washington County, COCO4,732107–

40Lake County, COCO7,55292–

41Crowley County, COCO5,67788–

42Rio Blanco County, COCO6,68384–

43Gilpin County, COCO6,07379–

44Alamosa County, COCO16,68876–

45Saguache County, COCO6,73271–

46Ouray County, COCO5,26568–

47Huerfano County, COCO7,01154–

48Bent County, COCO5,71652–

49Rio Grande County, COCO11,08751–

50Kit Carson County, COCO7,06950–

51Conejos County, COCO7,52943–

52Baca County, COCO3,34738–

53Phillips County, COCO4,42032–

54Lincoln County, COCO5,64531–

55Jackson County, COCO1,21130–

56Costilla County, COCO3,67928–

57Dolores County, COCO2,46625–

58Sedgwick County, COCO2,24719–

59Yuma County, COCO9,89619–

60Mineral County, COCO91018–

61San Juan County, COCO81315–

62Hinsdale County, COCO7532–

SHOWING 1–62 OF 62

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