RANKING · 2024 ACS · 59 SHOWN OF 59

Highest Czech population share, Colorado counties

Colorado counties ranked by the share of all residents who are Czech ancestry (2024 American Community Survey). A concentration measure: Czech residents as a percentage of total population. This list covers the 59 counties in Colorado that qualify, ranked against each other statewide. The median across all 59 is 0.5%. Biggest climber in the top 100 since 2020: Dolores County, CO, up 53 places to #2.

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SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPCZECH SHAREVS 2010

01▲1Custer County, COCO5,5902.7%+1.8 pts

02▲53Dolores County, COCO2,4662.7%+1.1 pts

03▲6Rio Blanco County, COCO6,6832.2%+1.5 pts

04▼3Huerfano County, COCO7,0111.8%+1.2 pts

05▲5Logan County, COCO20,6541.6%+0.2 pts

06▲15Jackson County, COCO1,2111.2%0.0 pts

07▲25Park County, COCO18,3141.2%+0.2 pts

08▼4Sedgwick County, COCO2,2471.1%−0.1 pts

09▲6Gunnison County, COCO17,4391.0%+0.3 pts

10▲3Douglas County, COCO399,3960.9%−0.1 pts

11▲1Jefferson County, COCO580,4510.9%0.0 pts

12▼7Cheyenne County, COCO1,7130.9%+0.6 pts

13Phillips County, COCO4,4200.8%+0.8 pts

14▲13Broomfield County, COCO79,1740.8%−0.5 pts

15▲7Teller County, COCO24,7560.8%+0.2 pts

16▼5Larimer County, COCO377,2920.8%−0.4 pts

17▲19Rio Grande County, COCO11,0870.8%+0.6 pts

18▼4Boulder County, COCO328,5600.7%−0.3 pts

19▼2Pitkin County, COCO16,6250.7%+0.6 pts

20▲31San Miguel County, COCO7,7530.7%+0.4 pts

21▲2Lincoln County, COCO5,6450.6%+0.2 pts

22▼19Summit County, COCO31,5170.6%−0.2 pts

23▲6Denver County, COCO740,6130.6%0.0 pts

24Grand County, COCO16,4960.6%−0.2 pts

25▲13Routt County, COCO25,3290.6%−0.5 pts

26▲4Washington County, COCO4,7320.6%−0.7 pts

27▼1El Paso County, COCO757,0400.5%−0.3 pts

28Arapahoe County, COCO673,8200.5%−0.2 pts

29▲6Chaffee County, COCO20,8310.5%−0.7 pts

30▲9Weld County, COCO378,4260.5%−0.4 pts

31Costilla County, COCO3,6790.5%–

32▲25Archuleta County, COCO14,3060.5%+0.1 pts

33▲10Montrose County, COCO44,5910.4%+0.3 pts

34▲14Pueblo County, COCO169,2770.4%−0.1 pts

35▼27Ouray County, COCO5,2650.4%−0.4 pts

36▲17Garfield County, COCO63,4740.4%−0.1 pts

37▲13Montezuma County, COCO26,6780.4%+0.1 pts

38▼4Adams County, COCO554,6680.4%−0.3 pts

39▼32Yuma County, COCO9,8960.4%−0.7 pts

40▼3Mesa County, COCO162,8450.4%−0.2 pts

41▲15Delta County, COCO32,1780.3%−0.3 pts

42▼24La Plata County, COCO56,8980.3%−0.3 pts

43▲6Clear Creek County, COCO8,9940.3%−1.6 pts

44▼24Elbert County, COCO30,5340.3%−0.3 pts

45▼20Eagle County, COCO54,2910.3%−1.1 pts

46▲1Lake County, COCO7,5520.3%+0.1 pts

47▼14Las Animas County, COCO14,3910.2%−0.3 pts

48▼2Morgan County, COCO30,3060.2%−0.5 pts

49▼30Kit Carson County, COCO7,0690.2%−0.3 pts

50▼19Fremont County, COCO50,0390.2%−0.2 pts

51▼11Alamosa County, COCO16,6880.2%−0.1 pts

52▼11Otero County, COCO17,6830.2%−0.3 pts

53▼11Prowers County, COCO11,8840.2%−0.2 pts

54Kiowa County, COCO1,4120.1%−0.8 pts

55▼10Moffat County, COCO13,1220.1%−0.6 pts

56▼40Mineral County, COCO9100.1%−0.5 pts

57▲3Conejos County, COCO7,5290.1%−0.5 pts

58▼6Crowley County, COCO5,6770.1%–

59▼5Gilpin County, COCO6,0730.0%−0.2 pts

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