Ranking of Louisiana 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 305.73K people in Louisiana with Irish ancestry. Among all Louisiana counties, St. Tammany Parish had the highest population with Irish ancestry (34.70K), followed by Jefferson Parish (32.50K), and East Baton Rouge Parish (25.41K).
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 Louisiana.
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Related Topics: Louisiana ACS-5Yrs Estimates, 2021 Topic List.
Data Source: US Census Bureau.
Ranking of Louisiana Counties By Population with Irish Ancestry in 2021
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| Rank | County | Population |
|---|---|---|
| 1 | St. Tammany Parish | 34699 |
| 2 | Jefferson Parish | 32496 |
| 3 | East Baton Rouge Parish | 25411 |
| 4 | Orleans Parish | 21898 |
| 5 | Livingston Parish | 15453 |
| 6 | Calcasieu Parish | 14909 |
| 7 | Lafayette Parish | 12246 |
| 8 | Tangipahoa Parish | 12229 |
| 9 | Caddo Parish | 12016 |
| 10 | Ouachita Parish | 11659 |
| 11 | Ascension Parish | 8172 |
| 12 | Bossier Parish | 7694 |
| 13 | Rapides Parish | 6884 |
| 14 | Lincoln Parish | 4136 |
| 15 | Washington Parish | 4057 |
| 16 | Terrebonne Parish | 3913 |
| 17 | St. Bernard Parish | 3800 |
| 18 | St. Charles Parish | 3789 |
| 19 | Lafourche Parish | 3276 |
| 20 | Beauregard Parish | 3035 |
| 21 | Franklin Parish | 2854 |
| 22 | Iberia Parish | 2771 |
| 23 | Avoyelles Parish | 2570 |
| 24 | Vernon Parish | 2423 |
| 25 | Webster Parish | 2345 |
| 26 | Vermilion Parish | 2251 |
| 27 | Sabine Parish | 2120 |
| 28 | Jackson Parish | 2106 |
| 29 | Plaquemines Parish | 2040 |
| 30 | Concordia Parish | 2038 |
| 31 | De Soto Parish | 2000 |
| 32 | Natchitoches Parish | 1999 |
| 33 | St. Mary Parish | 1930 |
| 34 | Acadia Parish | 1922 |
| 35 | Jefferson Davis Parish | 1888 |
| 36 | St. Landry Parish | 1846 |
| 37 | Richland Parish | 1836 |
| 38 | Iberville Parish | 1777 |
| 39 | West Carroll Parish | 1745 |
| 40 | Morehouse Parish | 1723 |
| 41 | Winn Parish | 1713 |
| 42 | Union Parish | 1704 |
| 43 | Allen Parish | 1607 |
| 44 | Bienville Parish | 1493 |
| 45 | St. Martin Parish | 1379 |
| 46 | St. John the Baptist Parish | 1306 |
| 47 | West Baton Rouge Parish | 1248 |
| 48 | Evangeline Parish | 1225 |
| 49 | Caldwell Parish | 1206 |
| 50 | Grant Parish | 1103 |
| 51 | West Feliciana Parish | 995 |
| 52 | Pointe Coupee Parish | 872 |
| 53 | East Feliciana Parish | 831 |
| 54 | St. Helena Parish | 817 |
| 55 | Catahoula Parish | 662 |
| 56 | LaSalle Parish | 605 |
| 57 | Claiborne Parish | 563 |
| 58 | Red River Parish | 548 |
| 59 | Assumption Parish | 528 |
| 60 | East Carroll Parish | 305 |
| 61 | St. James Parish | 300 |
| 62 | Tensas Parish | 299 |
| 63 | Madison Parish | 268 |
| 64 | Cameron Parish | 201 |
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