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RANKING · 2020 CENSUS · 64 SHOWN OF 64

Highest Irish population share, Colorado counties · 2020

Colorado counties ranked by the share of all residents who are Irish ancestry (2020 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
01Clear Creek County, COCO8,99417.9%+2.3 pts
02Kiowa County, COCO1,41217.6%+8.7 pts
03Mineral County, COCO91016.6%+4.1 pts
04Gilpin County, COCO6,07316.3%+0.9 pts
05Rio Blanco County, COCO6,68316.1%−0.3 pts
06Gunnison County, COCO17,43914.9%+0.3 pts
07Archuleta County, COCO14,30614.6%+0.3 pts
08Hinsdale County, COCO75314.5%+1.4 pts
09Teller County, COCO24,75614.5%−3.5 pts
10Moffat County, COCO13,12214.1%−0.9 pts
11La Plata County, COCO56,89813.6%−1.8 pts
12Cheyenne County, COCO1,71313.1%−2.3 pts
13Larimer County, COCO377,29213.0%−1.9 pts
14Custer County, COCO5,59013.0%−4.6 pts
15Jefferson County, COCO580,45113.0%−2.8 pts
16San Miguel County, COCO7,75312.9%−1.3 pts
17Douglas County, COCO399,39612.8%−3.8 pts
18Pitkin County, COCO16,62512.8%−2.4 pts
19Ouray County, COCO5,26512.8%−10.7 pts
20Washington County, COCO4,73212.8%−0.6 pts
21Mesa County, COCO162,84512.7%−1.7 pts
22Yuma County, COCO9,89612.4%−0.0 pts
23Broomfield County, COCO79,17412.3%−2.6 pts
24Delta County, COCO32,17811.9%+0.8 pts
25Boulder County, COCO328,56011.7%−2.3 pts
26Saguache County, COCO6,73211.5%−1.1 pts
27Huerfano County, COCO7,01111.4%−1.4 pts
28Routt County, COCO25,32911.4%−4.7 pts
29Elbert County, COCO30,53411.3%−3.0 pts
30Summit County, COCO31,51711.2%−3.6 pts
31Dolores County, COCO2,46611.0%−9.1 pts
32Otero County, COCO17,68310.9%+1.3 pts
33Garfield County, COCO63,47410.7%−4.0 pts
34Chaffee County, COCO20,83110.5%−6.2 pts
35Grand County, COCO16,49610.5%−9.3 pts
36El Paso County, COCO757,04010.4%−2.8 pts
37Fremont County, COCO50,03910.2%−3.3 pts
38Alamosa County, COCO16,68810.2%+0.1 pts
39Denver County, COCO740,61310.1%+0.0 pts
40Weld County, COCO378,42610.1%−1.7 pts
41Arapahoe County, COCO673,82010.0%−1.4 pts
42Logan County, COCO20,6549.9%−1.1 pts
43Lincoln County, COCO5,6459.9%−1.9 pts
44Kit Carson County, COCO7,0699.8%+0.5 pts
45Montrose County, COCO44,5919.7%−2.7 pts
46Eagle County, COCO54,2919.4%−3.3 pts
47Baca County, COCO3,3479.3%−3.3 pts
48Morgan County, COCO30,3069.3%−0.2 pts
49San Juan County, COCO8139.3%−0.8 pts
50Pueblo County, COCO169,2779.3%−0.9 pts
51Montezuma County, COCO26,6789.2%−5.0 pts
52Park County, COCO18,3149.1%−7.5 pts
53Jackson County, COCO1,2119.1%−5.0 pts
54Lake County, COCO7,5528.5%−3.1 pts
55Las Animas County, COCO14,3918.2%−2.0 pts
56Adams County, COCO554,6688.2%−1.3 pts
57Rio Grande County, COCO11,0877.0%−1.4 pts
58Crowley County, COCO5,6777.0%−1.1 pts
59Conejos County, COCO7,5296.9%−0.1 pts
60Bent County, COCO5,7166.7%−3.0 pts
61Sedgwick County, COCO2,2476.5%−1.6 pts
62Prowers County, COCO11,8846.4%−4.9 pts
63Phillips County, COCO4,4206.3%−5.4 pts
64Costilla County, COCO3,6794.0%−1.7 pts
SHOWING 1–64 OF 64
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UPDATED 2026-08-08 · DATA: US CENSUS BUREAU DECENNIAL CENSUS