RANKING · 2024 ACS · 63 SHOWN OF 63

Largest Scotch-Irish population, Colorado counties

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 63 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, COCO757,0407,953–

02Jefferson County, COCO580,4516,788–

03Arapahoe County, COCO673,8206,147–

04Denver County, COCO740,6135,390–

05Larimer County, COCO377,2924,781–

06Boulder County, COCO328,5603,610–

07Douglas County, COCO399,3963,489–

08Adams County, COCO554,6682,853–

09Weld County, COCO378,4262,742–

10Mesa County, COCO162,8452,299–

11Pueblo County, COCO169,2771,483–

12Garfield County, COCO63,474793–

13Broomfield County, COCO79,174765–

14La Plata County, COCO56,898585–

15Fremont County, COCO50,039544–

16Montrose County, COCO44,591543–

17Teller County, COCO24,756364–

18Elbert County, COCO30,534356–

19Chaffee County, COCO20,831353–

20Archuleta County, COCO14,306333–

21Montezuma County, COCO26,678322–

22Pitkin County, COCO16,625319–

23Delta County, COCO32,178311–

24Routt County, COCO25,329292–

25Morgan County, COCO30,306279–

26Clear Creek County, COCO8,994276–

27Gunnison County, COCO17,439256–

28Logan County, COCO20,654252–

29Grand County, COCO16,496237–

30Park County, COCO18,314226–

31Otero County, COCO17,683207–

32Saguache County, COCO6,732181–

33Eagle County, COCO54,291159–

34Crowley County, COCO5,677154–

35Moffat County, COCO13,122152–

36Summit County, COCO31,517140–

37Ouray County, COCO5,265137–

38Alamosa County, COCO16,688111–

39Lincoln County, COCO5,64596–

40Lake County, COCO7,55290–

41Las Animas County, COCO14,39185–

42Gilpin County, COCO6,07384–

43Dolores County, COCO2,46683–

44Yuma County, COCO9,89672–

45Rio Grande County, COCO11,08766–

46Huerfano County, COCO7,01150–

47Costilla County, COCO3,67945–

48Prowers County, COCO11,88445–

49San Miguel County, COCO7,75343–

50Hinsdale County, COCO75339–

51Rio Blanco County, COCO6,68335–

52Washington County, COCO4,73234–

53Kit Carson County, COCO7,06932–

54Baca County, COCO3,34727–

55Phillips County, COCO4,42026–

56Conejos County, COCO7,52925–

57Custer County, COCO5,59024–

58Bent County, COCO5,71622–

59Cheyenne County, COCO1,71321–

60Sedgwick County, COCO2,24719–

61Mineral County, COCO91013–

62San Juan County, COCO8139–

63Kiowa County, COCO1,4122–

SHOWING 1–63 OF 63

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