Want to know about the largest to smallest counties in Louisiana, USA in terms of total land area? Check this resource Louisiana counties by land area to discover all the details regarding county map (boundary), and nearby counties.
On the other hand, check Louisiana counties by population and Louisiana cities by population to know more about city and county based demographic details.
What is the largest county in Louisiana by land area?
Vernon Parish County is the largest county in Louisiana spanning 1326.73 square miles, with an additional 13.56 square miles of water area. Following Vernon Parish County, Rapides Parish County ranks as the second largest in terms of land area, covering 1324.11 square miles, while Cameron Parish County secures the position as the third largest county in Louisiana.
What is the smallest county by land area in Louisiana?
Orleans Parish is the smallest in Louisiana by total land area, covers about 169.5 square miles.
What is the largest county by population in Louisiana?
East Baton Rouge Parish in Louisiana, USA, stands as the most populous county having 456,781 residents as per the 2022 census data.
What is the smallest county by population in Louisiana?
Tensas Parish is the smallest in Louisiana by total population, having 4,147 residents as per the 2022 census data.
Louisiana Counties by Size
Rank
| County
in Louisiana | Land Area
square miles | Water Area
square miles | Total Area
square miles |
|---|
| 1 | Vernon Parish County | 1,327 | 14 | 1,340 |
| 2 | Rapides Parish County | 1,324 | 37 | 1,362 |
| 3 | Cameron Parish County | 1,285 | 652 | 1,937 |
| 4 | Natchitoches Parish County | 1,253 | 47 | 1,300 |
| 5 | Terrebonne Parish County | 1,230 | 852 | 2,082 |
| 6 | Vermilion Parish County | 1,172 | 360 | 1,532 |
| 7 | Beauregard Parish County | 1,157 | 8 | 1,166 |
| 8 | Lafourche Parish County | 1,068 | 401 | 1,468 |
| 9 | Calcasieu Parish County | 1,064 | 30 | 1,094 |
| 10 | Winn Parish County | 950 | 7 | 957 |
| 11 | St. Landry Parish County | 924 | 15 | 939 |
| 12 | Caddo Parish County | 879 | 58 | 937 |
| 13 | Union Parish | 877 | 28 | 905 |
| 14 | De Soto Parish | 876 | 18 | 895 |
| 15 | Sabine Parish | 867 | 145 | 1,012 |
| 16 | St. Tammany Parish | 845 | 250 | 1,096 |
| 17 | Bossier Parish | 840 | 27 | 867 |
| 18 | Avoyelles Parish | 832 | 34 | 866 |
| 19 | Bienville Parish | 811 | 11 | 822 |
| 20 | Morehouse Parish | 795 | 11 | 806 |
| 21 | Tangipahoa Parish | 791 | 53 | 844 |
| 22 | Plaquemines Parish | 781 | 1,787 | 2,567 |
| 23 | Allen Parish | 762 | 4 | 766 |
| 24 | Claiborne Parish | 755 | 13 | 767 |
| 25 | St. Martin Parish | 737 | 79 | 817 |
| 26 | Catahoula Parish | 708 | 31 | 739 |
| 27 | Concordia Parish | 697 | 50 | 747 |
| 28 | Washington Parish | 670 | 6 | 676 |
| 29 | Evangeline Parish | 662 | 17 | 680 |
| 30 | Acadia Parish | 655 | 2 | 658 |
| 31 | Jefferson Davis Parish | 652 | 7 | 659 |
| 32 | Livingston Parish | 648 | 43 | 691 |
| 33 | Grant Parish | 644 | 21 | 665 |
| 34 | La Salle Parish | 625 | 38 | 663 |
| 35 | Franklin Parish | 624 | 11 | 635 |
| 36 | Madison Parish | 624 | 26 | 650 |
| 37 | Iberville Parish | 619 | 34 | 653 |
| 38 | Ouachita Parish | 610 | 21 | 632 |
| 39 | Tensas Parish | 603 | 38 | 642 |
| 40 | Webster Parish | 593 | 22 | 615 |
| 41 | Iberia Parish | 575 | 466 | 1,040 |
| 42 | Jackson Parish | 569 | 11 | 580 |
| 43 | St. Mary Parish | 559 | 561 | 1,120 |
| 44 | Pointe Coupee Parish | 557 | 33 | 590 |
| 45 | Richland Parish | 556 | 9 | 564 |
| 46 | Caldwell Parish | 530 | 11 | 541 |
| 47 | Lincoln Parish | 472 | 1 | 472 |
| 48 | East Baton Rouge Parish | 456 | 15 | 470 |
| 49 | East Feliciana Parish | 453 | 2 | 456 |
| 50 | East Carroll Parish | 421 | 22 | 443 |
| 51 | St. Helena Parish | 409 | 1 | 410 |
| 52 | West Feliciana Parish | 403 | 23 | 426 |
| 53 | Red River Parish | 389 | 13 | 402 |
| 54 | West Carroll Parish | 360 | 1 | 361 |
| 55 | Assumption Parish | 344 | 26 | 370 |
| 56 | Jefferson Parish | 301 | 341 | 642 |
| 57 | Ascension Parish | 290 | 13 | 303 |
| 58 | St. Charles Parish | 278 | 119 | 397 |
| 59 | Lafayette Parish | 269 | 0 | 269 |
| 60 | St. James Parish | 238 | 15 | 253 |
| 61 | St. John the Baptist Parish | 214 | 196 | 410 |
| 62 | West Baton Rouge Parish | 192 | 11 | 204 |
| 63 | Orleans Parish | 170 | 180 | 350 |
