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 2020 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.

Scotch-Irish Americans: full group profile →

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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 2010

01El Paso County, COCO757,0408,309−43%

02Arapahoe County, COCO673,8207,138−31%

03Jefferson County, COCO580,4516,787−49%

04Denver County, COCO740,6136,721−35%

05Larimer County, COCO377,2925,296−32%

06Boulder County, COCO328,5604,874−37%

07Douglas County, COCO399,3963,925−41%

08Adams County, COCO554,6683,674−43%

09Weld County, COCO378,4263,373−26%

10Mesa County, COCO162,8452,526−29%

11Pueblo County, COCO169,2771,553−36%

12Broomfield County, COCO79,174724−43%

13Fremont County, COCO50,039589−43%

14La Plata County, COCO56,898516−65%

15Eagle County, COCO54,291507−55%

16Chaffee County, COCO20,831505+56%

17Montrose County, COCO44,591462−48%

18Routt County, COCO25,329458−17%

19Elbert County, COCO30,534387−29%

20Pitkin County, COCO16,625368−2%

21Garfield County, COCO63,474367−68%

22Teller County, COCO24,756358−59%

23Montezuma County, COCO26,678352−56%

24Archuleta County, COCO14,306347+42%

25Logan County, COCO20,654314−45%

26Morgan County, COCO30,306289−52%

27Delta County, COCO32,178287−68%

28Clear Creek County, COCO8,994283−38%

29Gunnison County, COCO17,439272−29%

30Otero County, COCO17,683250−17%

31Summit County, COCO31,517244−67%

32Grand County, COCO16,496204−32%

33Moffat County, COCO13,122192−28%

34Park County, COCO18,314153−82%

35San Miguel County, COCO7,753143+1%

36Prowers County, COCO11,884136−30%

37Las Animas County, COCO14,391130−66%

38Custer County, COCO5,590107+6%

39Washington County, COCO4,732107−35%

40Lake County, COCO7,55292−39%

41Crowley County, COCO5,67788+40%

42Rio Blanco County, COCO6,68384−46%

43Gilpin County, COCO6,07379−29%

44Alamosa County, COCO16,68876−74%

45Saguache County, COCO6,73271−23%

46Ouray County, COCO5,26568−63%

47Huerfano County, COCO7,01154−84%

48Bent County, COCO5,71652−21%

49Rio Grande County, COCO11,08751−84%

50Kit Carson County, COCO7,06950−78%

51Conejos County, COCO7,52943−76%

52Baca County, COCO3,34738−73%

53Phillips County, COCO4,42032−58%

54Lincoln County, COCO5,64531−84%

55Jackson County, COCO1,21130+3%

56Costilla County, COCO3,67928+33%

57Dolores County, COCO2,46625−85%

58Sedgwick County, COCO2,24719−74%

59Yuma County, COCO9,89619−94%

60Mineral County, COCO91018−40%

61San Juan County, COCO81315−77%

62Hinsdale County, COCO7532−92%

SHOWING 1–62 OF 62

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UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS