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 2024 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. The median across all 63 is 181. Biggest climber in the top 100 since 2020: Lincoln County, CO, up 15 places to #39.

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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, COCO757,0407,953−45%

02▲1Jefferson County, COCO580,4516,788−49%

03▼1Arapahoe County, COCO673,8206,147−41%

04Denver County, COCO740,6135,390−48%

05Larimer County, COCO377,2924,781−38%

06Boulder County, COCO328,5603,610−54%

07Douglas County, COCO399,3963,489−47%

08Adams County, COCO554,6682,853−56%

09Weld County, COCO378,4262,742−39%

10Mesa County, COCO162,8452,299−35%

11Pueblo County, COCO169,2771,483−39%

12▲9Garfield County, COCO63,474793−31%

13▼1Broomfield County, COCO79,174765−40%

14La Plata County, COCO56,898585−61%

15▼2Fremont County, COCO50,039544−48%

16▲1Montrose County, COCO44,591543−39%

17▲5Teller County, COCO24,756364−58%

18▲1Elbert County, COCO30,534356−35%

19▼3Chaffee County, COCO20,831353+9%

20▲4Archuleta County, COCO14,306333+36%

21▲2Montezuma County, COCO26,678322−59%

22▼2Pitkin County, COCO16,625319−15%

23▲4Delta County, COCO32,178311−65%

24▼6Routt County, COCO25,329292−47%

25▲1Morgan County, COCO30,306279−54%

26▲2Clear Creek County, COCO8,994276−40%

27▲2Gunnison County, COCO17,439256−33%

28▼3Logan County, COCO20,654252−56%

29▲3Grand County, COCO16,496237−22%

30▲4Park County, COCO18,314226−74%

31▼1Otero County, COCO17,683207−32%

32▲13Saguache County, COCO6,732181+97%

33▼18Eagle County, COCO54,291159−86%

34▲7Crowley County, COCO5,677154+144%

35▼2Moffat County, COCO13,122152−43%

36▼5Summit County, COCO31,517140−81%

37▲9Ouray County, COCO5,265137−26%

38▲6Alamosa County, COCO16,688111−62%

39▲15Lincoln County, COCO5,64596−52%

40Lake County, COCO7,55290−40%

41▼4Las Animas County, COCO14,39185−78%

42▲1Gilpin County, COCO6,07384−24%

43▲14Dolores County, COCO2,46683−49%

44▲15Yuma County, COCO9,89672−76%

45▲4Rio Grande County, COCO11,08766−79%

46▲1Huerfano County, COCO7,01150−85%

47▲9Costilla County, COCO3,67945+114%

48▼12Prowers County, COCO11,88445−77%

49▼14San Miguel County, COCO7,75343−70%

50▲12Hinsdale County, COCO75339+50%

51▼9Rio Blanco County, COCO6,68335−78%

52▼13Washington County, COCO4,73234−79%

53▼3Kit Carson County, COCO7,06932−86%

54▼2Baca County, COCO3,34727−81%

55▼2Phillips County, COCO4,42026−66%

56▼5Conejos County, COCO7,52925−86%

57▼19Custer County, COCO5,59024−76%

58▼10Bent County, COCO5,71622−67%

59Cheyenne County, COCO1,71321−75%

60▼2Sedgwick County, COCO2,24719−74%

61▼1Mineral County, COCO91013−57%

62▼1San Juan County, COCO8139−86%

63Kiowa County, COCO1,4122−95%

SHOWING 1–63 OF 63

Download CSV (full list, 63 rows)

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES