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RANKING · 2020 CENSUS · 134 SHOWN OF 3,134

Largest Irish population, US counties · 2020

US counties ranked by the number of residents who are Irish ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV.

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RANKPLACESTATEPOPIRISH POPULATIONVS 2010
3001Starr County, TXTX66,319170−43%
3002Divide County, NDND2,110169−3%
3003Crane County, TXTX4,554167−44%
3004Aurora County, SDSD2,801164−31%
3005Buena Vista, VAVA6,672163−80%
3006Wilcox County, ALAL9,666161−56%
3007Cimarron County, OKOK2,059160−62%
3008Adams County, NDND2,275158−16%
3009Keweenaw County, MIMI2,186157+60%
3010Sioux County, NENE1,188157−46%
3011Sherman County, OROR2,051157−34%
3012Bailey County, TXTX6,963157−55%
3013Schley County, GAGA4,593156−77%
3014Renville County, NDND2,331156−45%
3015Wallace County, KSKS1,441156−26%
3016Lowndes County, ALAL9,359154−41%
3017Reeves County, TXTX12,138154+34%
3018Oneida County, IDID5,085154−16%
3019Hoonah-Angoon Census Area, AKAK2,271153−16%
3020Keya Paha County, NENE792153+66%
3021Cochran County, TXTX2,546153−32%
3022Costilla County, COCO3,679151−24%
3023Allendale County, SCSC7,355150−37%
3024Sedgwick County, COCO2,247150−23%
3025Clay County, GAGA2,815150+13%
3026Foard County, TXTX1,044150−24%
3027Bowman County, NDND2,762147−52%
3028Butte County, IDID2,783147−43%
3029Wheeler County, NENE789146+23%
3030Dickens County, TXTX1,692145−57%
3031Mineral County, COCO910142+11%
3032Piute County, UTUT1,509142−7%
3033Sully County, SDSD1,479140−28%
3034Ziebach County, SDSD2,389140−26%
3035Dewey County, SDSD5,419139−60%
3036Sharkey County, MSMS3,097138−7%
3037Prairie County, MTMT1,112138+8%
3038Corson County, SDSD3,781138−16%
3039Holmes County, MSMS15,465134−76%
3040Zapata County, TXTX13,753134−64%
3041Calhoun County, GAGA5,413133−67%
3042Grant County, NENE561131−17%
3043Oglala Lakota County, SDSD13,338129–
3044Upton County, TXTX3,131128−68%
3045Stewart County, GAGA4,631128−55%
3046Carter County, MTMT1,383127−20%
3047Logan County, NENE669127+51%
3048Randolph County, GAGA6,156126−80%
3049Wibaux County, MTMT885124−13%
3050Hooker County, NENE686124+1%
3051Bamberg County, SCSC12,796123−72%
3052Armstrong County, TXTX1,843122−70%
3053Wells County, NDND3,729120−58%
3054Todd County, SDSD8,863120−27%
3055Stonewall County, TXTX1,186120−14%
3056Jackson County, COCO1,211120−42%
3057Briscoe County, TXTX1,474119−72%
3058Alpine County, CACA1,043117−32%
3059Lane County, KSKS1,508115−61%
3060Miner County, SDSD2,281115−62%
3061Emmons County, NDND3,215114−28%
3062Warren County, GAGA5,269114−47%
3063Crockett County, TXTX2,769114+7%
3064McMullen County, TXTX544113−19%
3065Hinsdale County, COCO753113+77%
3066Guadalupe County, NMNM4,343111−41%
3067Bullock County, ALAL9,780111−59%
3068Thomas County, NENE639110−11%
3069Edwards County, TXTX1,370109−8%
3070Esmeralda County, NVNV729108−12%
3071Grant County, NDND2,206107−27%
3072Griggs County, NDND2,239106−9%
3073Greeley County, KSKS1,182106−25%
3074Liberty County, MTMT1,957103−69%
3075Harding County, SDSD1,331102−56%
3076Irion County, TXTX1,463102−54%
3077Twiggs County, GAGA7,597100−78%
3078Roberts County, TXTX867100−26%
3079Sioux County, NDND3,66798+46%
3080Aleutians East, AKAK3,47996+118%
3081Sutton County, TXTX3,20394−48%
3082Hamilton County, KSKS2,50093−69%
3083Hudspeth County, TXTX3,43391+54%
3084Culberson County, TXTX2,26788−16%
3085Terrell County, TXTX70282−37%
3086Jim Hogg County, TXTX4,55580+95%
3087Golden Valley County, MTMT84478−48%
3088Jones County, SDSD91378−54%
3089Borden County, TXTX56778−28%
3090Slope County, NDND62877+35%
3091Steele County, NDND1,79775−30%
3092Garfield County, MTMT1,14873−65%
3093Logan County, NDND1,85973−20%
3094Arthur County, NENE39670−9%
3095Loup County, NENE57070−50%
3096Hayes County, NENE82168−58%
3097McPherson County, NENE36968−61%
3098Mellette County, SDSD2,13765−62%
3099Billings County, NDND1,07162−25%
3100Webster County, GAGA2,36962−88%
3101Oliver County, NDND1,89860−21%
3102Campbell County, SDSD1,37760−46%
3103San Juan County, COCO81360−21%
3104Rich County, UTUT2,68760−53%
3105Taliaferro County, GAGA1,66256−19%
3106Treasure County, MTMT72855−35%
3107Daggett County, UTUT93455−33%
3108Clark County, IDID78353+165%
3109Sheridan County, NDND1,29652−10%
3110Blaine County, NENE45852−35%
3111Camas County, IDID1,31651−52%
3112McIntosh County, NDND2,45150−40%
3113Schleicher County, TXTX2,24549−87%
3114Petroleum County, MTMT54848−39%
3115Claiborne County, MSMS8,05847−67%
3116Banner County, NENE68645−45%
3117Reagan County, TXTX3,16644−72%
3118Baker County, GAGA2,72541+156%
3119Lake and Peninsula, AKAK1,35739+15%
3120Glasscock County, TXTX1,12838−64%
3121Kent County, TXTX67437−53%
3122Yakutat, AKAK67234−58%
3123Stanton County, KSKS1,98633−81%
3124Emporia, VAVA5,44731−86%
3125Menominee County, WIWI4,19931−69%
3126Bristol Bay, AKAK84730−61%
3127King County, TXTX19221−34%
3128Issaquena County, MSMS1,26320−82%
3129Kusilvak Census Area, AKAK7,93219–
3130Harding County, NMNM61719−50%
3131Buffalo County, SDSD1,80214−33%
3132Brooks County, TXTX6,57913−75%
3133Kenedy County, TXTX3192–
3134Kalawao County, HIHI821−75%
SHOWING 3,001–3,134 OF 3,134

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS