Which county has the highest irish population?

Cook County, Illinois ranks #1 with 432,999 (2024 American Community Survey).

What are the top 5 counties by irish population?

Cook County, Illinois, Maricopa County, Arizona, Los Angeles County, California, Middlesex County, Massachusetts, San Diego County, California.

How many counties are in this ranking?

3,144 counties qualify after filtering for population minimums and data availability. The ranking covers 2024 ACS 5-year data.

How is irish population measured?

Number of residents who are Irish ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, American Community Survey 5-year estimates (2024).

RANKING · 2024 ACS · 144 SHOWN OF 3,144

Largest Irish population, US counties

US counties ranked by the number of residents who are Irish ancestry, from the 2024 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV.

Irish Americans: full group profile →

All statesAll rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPIRISH POPULATIONVS 2010

3001▲3Aurora County, SDSD2,801181−24%

3002▼91Sherman County, TXTX2,781180−28%

3003▼127Douglas County, SDSD2,888178+6%

3004▼45Kinney County, TXTX3,128178−35%

3005▲73Roberts County, TXTX867177+30%

3006▼164Kittson County, MNMN4,031176−45%

3007▲3Sioux County, NENE1,188175−40%

3008▼162Lipscomb County, TXTX2,955175−50%

3009▲33Grant County, NENE561174+11%

3010▼79Powder River County, MTMT1,781170−27%

3011▼53Cottle County, TXTX1,224170+7%

3012▼129Benson County, NDND5,759167−50%

3013▲33Carter County, MTMT1,383166+4%

3014▼25Potter County, SDSD2,377165−38%

3015▼91Daniels County, MTMT1,612164+20%

3016▼3Schley County, GAGA4,593163−76%

3017▲42Lane County, KSKS1,508163−45%

3018▼54Cameron Parish, LALA4,718163−67%

3019▼31McCone County, MTMT1,720163−20%

3020▲7Bowman County, NDND2,762163−47%

3021▲50Grant County, NDND2,206162+11%

3022▼65Rolette County, NDND11,688162−56%

3023▲9Piute County, UTUT1,509162+6%

3024▲68Garfield County, MTMT1,148160−23%

3025▲95Glasscock County, TXTX1,128159+49%

3026▲4Dickens County, TXTX1,692158−53%

3027▼13Renville County, NDND2,331158−44%

3028▲90Baker County, GAGA2,725158+888%

3029▼81Nelson County, NDND2,963157−40%

3030▼68Motley County, TXTX1,043156−9%

3031▼195Sargent County, NDND3,711152−54%

3032▲29Emmons County, NDND3,215151−4%

3033▲16Wibaux County, MTMT885149+4%

3034▼22Bailey County, TXTX6,963148−58%

3035▲30Hinsdale County, COCO753146+128%

3036▼76Kearny County, KSKS3,888146−62%

3037▲43Aleutians East, AKAK3,479144+227%

3038▼52Dillingham Census Area, AKAK4,483144−54%

3039▲85Emporia, VAVA5,447144−36%

3040▼44Hyde County, SDSD1,191143−33%

3041▼8Sully County, SDSD1,479143−26%

3042▲39Sutton County, TXTX3,203143−21%

3043▼28Wallace County, KSKS1,441143−32%

3044▲6Hooker County, NENE686142+15%

3045▲19McMullen County, TXTX544142+1%

3046▲58Rich County, UTUT2,687141+11%

3047▼55Jeff Davis County, TXTX1,711140−47%

3048▼41Cimarron County, OKOK2,059135−68%

3049▼18Mineral County, COCO910133+4%

3050▲79Kusilvak Census Area, AKAK7,932131–

3051▼100Burke County, NDND2,132131+41%

3052▼57Harmon County, OKOK2,327131−56%

3053▲3Jackson County, COCO1,211131−36%

3054▼105Aleutians West Census Area, AKAK5,240130−55%

3055▼56Northwest Arctic, AKAK7,095128−29%

3056▼100Duval County, TXTX9,402126−73%

3057▲18Harding County, SDSD1,331126−45%

3058▲43Oliver County, NDND1,898125+64%

3059▼42Reeves County, TXTX12,138125+9%

3060▼39Cochran County, TXTX2,546124−45%

3061▼242Presidio County, TXTX5,433123−7%

3062▼144Hodgeman County, KSKS1,619123−53%

3063▼55Adams County, NDND2,275122−35%

3064▲4Thomas County, NENE639121−2%

3065▼262Menard County, TXTX1,956121+9%

3066▼125De Baca County, NMNM1,647120−8%

3067▼180Wayne County, UTUT2,587119−62%

3068▼255Haines, AKAK2,068118−65%

3069▼60Keweenaw County, MIMI2,186117+19%

3070▲3Greeley County, KSKS1,182115−19%

3071▼80Towner County, NDND2,040114−52%

3072▼172Bennett County, SDSD3,307110+55%

3073▼130Dimmit County, TXTX8,024110−41%

3074▲41Claiborne County, MSMS8,058109−24%

3075▼46Wheeler County, NENE789109−8%

3076▼48Butte County, IDID2,783105−59%

3077▲18Loup County, NENE570105−26%

3078▼168Haskell County, KSKS3,599103−73%

3079▲5Culberson County, TXTX2,267102−3%

3080▼23Briscoe County, TXTX1,47498−77%

3081▼26Stonewall County, TXTX1,18698−29%

3082▼106Wheeler County, GAGA7,57098−51%

3083▼43Zapata County, TXTX13,75395−74%

3084▼104Quitman County, GAGA2,25494−71%

3085▲6Steele County, NDND1,79792−14%

3086▼42Upton County, TXTX3,13192−77%

3087▼67Keya Paha County, NENE79290−2%

3088▼141Zavala County, TXTX9,03790+38%

3089▼218Castro County, TXTX7,29590−86%

3090▲16Treasure County, MTMT72888+5%

3091▼153Denali, AKAK1,61687−61%

3092▼91Starr County, TXTX66,31987−71%

3093▼45Randolph County, GAGA6,15687−86%

3094▼47Logan County, NENE66985+1%

3095▼52Oglala Lakota County, SDSD13,33884–

3096▼20Irion County, TXTX1,46383−63%

3097▼7Slope County, NDND62881+42%

3098▲7Taliaferro County, GAGA1,66281+17%

3099▼73Foard County, TXTX1,04480−60%

3100▼33Bullock County, ALAL9,78078−71%

3101▲2San Juan County, COCO81377+1%

3102▼77Clay County, GAGA2,81577−42%

3103▲14Reagan County, TXTX3,16675−53%

3104▼22Hamilton County, KSKS2,50074−75%

3105▲4Sheridan County, NDND1,29670+21%

3106▼19Golden Valley County, MTMT84469−54%

3107▼11Hayes County, NENE82168−58%

3108▼1Daggett County, UTUT93467−18%

3109▲7Banner County, NENE68665−21%

3110▼17Logan County, NDND1,85964−30%

3111▼22Borden County, TXTX56763−42%

3112▼46Guadalupe County, NMNM4,34362−67%

3113▼68Stewart County, GAGA4,63162−78%

3114▼78Sharkey County, MSMS3,09761−59%

3115▲6Kent County, TXTX67459−24%

3116▼113Crane County, TXTX4,55456−81%

3117▼18Billings County, NDND1,07154−35%

3118▼6McIntosh County, NDND2,45152−37%

3119▼5Petroleum County, MTMT54850−37%

3120▲5Menominee County, WIWI4,19948−52%

3121▲5Bristol Bay, AKAK84742−45%

3122▼3Lake and Peninsula, AKAK1,35741+21%

3123▼25Mellette County, SDSD2,13738−78%

3124▼24Webster County, GAGA2,36937−93%

3125▼31Arthur County, NENE39636−53%

3126▼38Jones County, SDSD91335−80%

3127▼48Sioux County, NDND3,66733−51%

3128▼1King County, TXTX19233+3%

3129▼32McPherson County, NENE36933−81%

3130▼20Blaine County, NENE45831−61%

3131▼23Clark County, IDID78329+45%

3132Brooks County, TXTX6,57927−48%

3133▼63Esmeralda County, NVNV72926−79%

3134▼48Jim Hogg County, TXTX4,55525−39%

3135▼13Yakutat, AKAK67223−72%

3136▼6Harding County, NMNM61720−47%

3137▼9Issaquena County, MSMS1,26319−83%

3138▼75Crockett County, TXTX2,76913−88%

3139▼16Stanton County, KSKS1,98613−93%

3140▼38Campbell County, SDSD1,37711−90%

3141▼10Buffalo County, SDSD1,8027−67%

3142▼8Kalawao County, HIHI826+50%

3143Loving County, TXTX523−77%

3144▼11Kenedy County, TXTX3192–

SHOWING 3,001–3,144 OF 3,144

1 2 3 4 5 6 7

Download CSV (full list, 3,144 rows)

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