Ranking of Kentucky Counties By Population with Irish Ancestry in 2021
Updated on April 16, 2025.
Based on the US Census ACS-5Yrs estimates, in 2021, there were 501.58K people in Kentucky with Irish ancestry. Among all Kentucky counties, Jefferson County had the highest population with Irish ancestry (95.04K), followed by Fayette County (35.34K), and Kenton County (29.64K).
The chart and table below shows the top 10 counties with high number of people with Irish ancestry.
You can see similar information for other states and for other ancestry groups in Kentucky.
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Related Topics: Kentucky ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Kentucky Counties By Population with Irish Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | Jefferson County | 95038 |
| 2 | Fayette County | 35337 |
| 3 | Kenton County | 29641 |
| 4 | Boone County | 20734 |
| 5 | Campbell County | 14772 |
| 6 | Warren County | 13215 |
| 7 | Hardin County | 12164 |
| 8 | Bullitt County | 12070 |
| 9 | Daviess County | 11280 |
| 10 | Madison County | 9373 |
| 11 | Oldham County | 9204 |
| 12 | Pulaski County | 7549 |
| 13 | Franklin County | 7133 |
| 14 | Scott County | 6701 |
| 15 | Jessamine County | 6342 |
| 16 | Shelby County | 6223 |
| 17 | Laurel County | 5925 |
| 18 | Pike County | 5755 |
| 19 | McCracken County | 5675 |
| 20 | Nelson County | 5337 |
| 21 | Boyd County | 5166 |
| 22 | Meade County | 4738 |
| 23 | Clark County | 4380 |
| 24 | Henderson County | 4287 |
| 25 | Christian County | 4252 |
| 26 | Hopkins County | 3973 |
| 27 | Marshall County | 3962 |
| 28 | Whitley County | 3841 |
| 29 | Breckinridge County | 3565 |
| 30 | Boyle County | 3527 |
| 31 | Grant County | 3315 |
| 32 | Woodford County | 3259 |
| 33 | Calloway County | 3243 |
| 34 | Greenup County | 3224 |
| 35 | Floyd County | 2975 |
| 36 | Anderson County | 2970 |
| 37 | Graves County | 2960 |
| 38 | Rowan County | 2957 |
| 39 | Perry County | 2863 |
| 40 | Barren County | 2843 |
| 41 | Johnson County | 2795 |
| 42 | Taylor County | 2613 |
| 43 | Grayson County | 2479 |
| 43 | Harlan County | 2479 |
| 44 | Logan County | 2476 |
| 45 | Knox County | 2453 |
| 46 | Letcher County | 2409 |
| 47 | Muhlenberg County | 2368 |
| 48 | Montgomery County | 2314 |
| 49 | Ohio County | 2230 |
| 50 | Bourbon County | 2194 |
| 51 | Henry County | 2124 |
| 52 | Bell County | 2111 |
| 53 | Marion County | 2096 |
| 54 | Fleming County | 2008 |
| 55 | Mason County | 2006 |
| 56 | Lincoln County | 2004 |
| 57 | Allen County | 1989 |
| 58 | Carter County | 1934 |
| 59 | Simpson County | 1929 |
| 60 | Wayne County | 1913 |
| 61 | Mercer County | 1899 |
| 62 | Harrison County | 1877 |
| 63 | Larue County | 1705 |
| 64 | Spencer County | 1686 |
| 65 | Knott County | 1656 |
| 66 | Bath County | 1642 |
| 67 | Hart County | 1519 |
| 68 | Owen County | 1506 |
| 69 | Trigg County | 1496 |
| 70 | Martin County | 1494 |
| 71 | Powell County | 1475 |
| 72 | Pendleton County | 1469 |
| 73 | Adair County | 1466 |
| 74 | Russell County | 1465 |
| 75 | Washington County | 1441 |
| 76 | Crittenden County | 1423 |
| 77 | Casey County | 1362 |
| 78 | Estill County | 1296 |
| 79 | Lewis County | 1286 |
| 80 | Lawrence County | 1264 |
| 81 | Rockcastle County | 1259 |
| 82 | Garrard County | 1258 |
| 83 | Hancock County | 1253 |
| 84 | Butler County | 1252 |
| 85 | Leslie County | 1240 |
| 86 | McCreary County | 1236 |
| 87 | Morgan County | 1221 |
| 88 | Union County | 1212 |
| 89 | Magoffin County | 1159 |
| 90 | Webster County | 1132 |
| 91 | Carroll County | 1124 |
| 92 | Ballard County | 1050 |
| 93 | Gallatin County | 1027 |
| 94 | Trimble County | 1019 |
| 95 | Caldwell County | 1013 |
| 96 | Bracken County | 993 |
| 97 | Elliott County | 944 |
| 98 | Lyon County | 907 |
| 99 | Clay County | 883 |
| 100 | Metcalfe County | 829 |
| 101 | Nicholas County | 750 |
| 102 | Lee County | 746 |
| 103 | Edmonson County | 717 |
| 104 | Green County | 702 |
| 105 | Monroe County | 700 |
| 106 | Todd County | 679 |
| 107 | Breathitt County | 673 |
| 108 | McLean County | 654 |
| 109 | Clinton County | 622 |
| 110 | Jackson County | 599 |
| 111 | Fulton County | 584 |
| 112 | Wolfe County | 525 |
| 113 | Menifee County | 490 |
| 114 | Hickman County | 488 |
| 115 | Livingston County | 472 |
| 116 | Cumberland County | 457 |
| 117 | Carlisle County | 317 |
| 118 | Robertson County | 147 |
| 119 | Owsley County | 128 |
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