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RANKING · 2024 ACS · 64 SHOWN OF 64

Highest Irish population share, Colorado counties

Colorado counties ranked by the share of all residents who are Irish ancestry (2024 American Community Survey). A concentration measure: Irish residents as a percentage of total population. This list covers the 64 counties in Colorado that qualify, ranked against each other statewide.

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RELATEDLargest American populationHighest American population shareLargest Arab populationHighest Arab population shareLargest Egyptian populationHighest Egyptian population share
YEAR201020202024
Highest Irish population share by state
All USAlaskaAlabamaArkansasArizonaCaliforniaColoradoFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWashingtonWisconsinWest VirginiaWyoming
RANKPLACESTATEPOPIRISH SHAREVS 2010
01Mineral County, COCO91018.2%+5.7 pts
02Clear Creek County, COCO8,99417.7%+2.2 pts
03Gilpin County, COCO6,07316.5%+1.1 pts
04San Miguel County, COCO7,75315.8%+1.6 pts
05La Plata County, COCO56,89815.0%−0.4 pts
06Kiowa County, COCO1,41214.8%+5.9 pts
07Hinsdale County, COCO75314.5%+1.4 pts
08Custer County, COCO5,59014.2%−3.4 pts
09Moffat County, COCO13,12214.2%−0.8 pts
10Park County, COCO18,31414.1%−2.5 pts
11Archuleta County, COCO14,30613.9%−0.3 pts
12Cheyenne County, COCO1,71313.8%−1.5 pts
13Pitkin County, COCO16,62513.7%−1.5 pts
14Gunnison County, COCO17,43913.5%−1.1 pts
15Jefferson County, COCO580,45113.4%−2.4 pts
16Douglas County, COCO399,39613.2%−3.5 pts
17Elbert County, COCO30,53413.2%−1.2 pts
18Chaffee County, COCO20,83113.1%−3.6 pts
19Teller County, COCO24,75612.9%−5.1 pts
20Larimer County, COCO377,29212.8%−2.2 pts
21Boulder County, COCO328,56012.6%−1.4 pts
22Mesa County, COCO162,84512.5%−1.8 pts
23Routt County, COCO25,32912.3%−3.8 pts
24Delta County, COCO32,17812.1%+1.0 pts
25Broomfield County, COCO79,17412.0%−2.9 pts
26Rio Blanco County, COCO6,68311.8%−4.6 pts
27Dolores County, COCO2,46611.7%−8.3 pts
28Washington County, COCO4,73211.6%−1.8 pts
29Denver County, COCO740,61311.3%+1.2 pts
30El Paso County, COCO757,04011.2%−2.0 pts
31Yuma County, COCO9,89610.8%−1.7 pts
32Baca County, COCO3,34710.8%−1.8 pts
33Ouray County, COCO5,26510.8%−12.7 pts
34Montezuma County, COCO26,67810.7%−3.5 pts
35San Juan County, COCO81310.6%+0.5 pts
36Lake County, COCO7,55210.5%−1.0 pts
37Sedgwick County, COCO2,24710.4%+2.2 pts
38Saguache County, COCO6,73210.4%−2.2 pts
39Arapahoe County, COCO673,82010.3%−1.1 pts
40Fremont County, COCO50,03910.2%−3.3 pts
41Garfield County, COCO63,47410.0%−4.7 pts
42Lincoln County, COCO5,6459.7%−2.1 pts
43Weld County, COCO378,4269.7%−2.2 pts
44Jackson County, COCO1,2119.5%−4.5 pts
45Alamosa County, COCO16,6889.5%−0.5 pts
46Kit Carson County, COCO7,0699.2%−0.1 pts
47Las Animas County, COCO14,3919.1%−1.1 pts
48Grand County, COCO16,4969.1%−10.7 pts
49Montrose County, COCO44,5919.0%−3.4 pts
50Rio Grande County, COCO11,0878.8%+0.4 pts
51Pueblo County, COCO169,2778.6%−1.6 pts
52Eagle County, COCO54,2918.6%−4.2 pts
53Logan County, COCO20,6548.5%−2.6 pts
54Conejos County, COCO7,5298.4%+1.4 pts
55Adams County, COCO554,6688.3%−1.2 pts
56Otero County, COCO17,6838.2%−1.4 pts
57Summit County, COCO31,5177.7%−7.1 pts
58Morgan County, COCO30,3067.2%−2.3 pts
59Bent County, COCO5,7167.1%−2.5 pts
60Phillips County, COCO4,4206.7%−5.0 pts
61Costilla County, COCO3,6796.3%+0.7 pts
62Crowley County, COCO5,6776.2%−2.0 pts
63Huerfano County, COCO7,0116.0%−6.9 pts
64Prowers County, COCO11,8844.5%−6.8 pts
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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES