Fastest growing counties in Louisiana.
County | Rank | Change (2020) | 2024 Pop. | 2020 Pop. |
|---|---|---|---|---|
| Livingston Parish | 1 | 6.58% | 152,234 | 142,834 |
| St. Tammany Parish | 2 | 4.88% | 277,929 | 265,000 |
| Ascension Parish | 3 | 4.57% | 132,779 | 126,978 |
| West Baton Rouge Parish | 4 | 4.53% | 28,498 | 27,262 |
| Tangipahoa Parish | 5 | 4.25% | 139,329 | 133,654 |
| Lafayette Parish | 6 | 3.98% | 251,786 | 242,145 |
| De Soto Parish | 7 | 1.96% | 27,372 | 26,845 |
| St. Bernard Parish | 8 | 1.48% | 44,507 | 43,856 |
| Bossier Parish | 9 | 1.33% | 130,437 | 128,721 |
| Beauregard Parish | 10 | 1.16% | 37,030 | 36,605 |
| West Feliciana Parish | 11 | 0.57% | 15,346 | 15,259 |
| Vermilion Parish | 12 | 0.13% | 57,031 | 56,956 |
| LaSalle Parish | 13 | -0.3% | 14,779 | 14,823 |
| Lincoln Parish | 14 | -0.76% | 47,944 | 48,309 |
| East Feliciana Parish | 15 | -1.06% | 19,250 | 19,456 |
| Sabine Parish | 16 | -1.18% | 21,838 | 22,099 |
| St. Helena Parish | 17 | -1.28% | 10,759 | 10,898 |
| St. Landry Parish | 18 | -1.29% | 81,249 | 82,314 |
| Washington Parish | 19 | -1.36% | 44,739 | 45,357 |
| Iberville Parish | 20 | -1.47% | 29,621 | 30,064 |
| St. Martin Parish | 21 | -1.49% | 50,865 | 51,634 |
| Grant Parish | 22 | -1.66% | 21,782 | 22,149 |
| Ouachita Parish | 23 | -1.67% | 157,432 | 160,111 |
| Richland Parish | 24 | -1.93% | 19,640 | 20,026 |
| East Baton Rouge Parish | 25 | -1.99% | 446,843 | 455,899 |
| Acadia Parish | 26 | -2.13% | 56,253 | 57,478 |
| Jackson Parish | 27 | -2.15% | 14,676 | 14,998 |
| Union Parish | 28 | -2.47% | 20,571 | 21,092 |
| Franklin Parish | 29 | -2.54% | 19,212 | 19,713 |
| Evangeline Parish | 30 | -2.55% | 31,475 | 32,297 |
| Lafourche Parish | 31 | -3.17% | 94,361 | 97,454 |
| Jefferson Davis Parish | 32 | -3.21% | 31,177 | 32,210 |
| Rapides Parish | 33 | -3.21% | 125,492 | 129,651 |
| Allen Parish | 34 | -3.31% | 21,937 | 22,687 |
| Caldwell Parish | 35 | -3.43% | 9,285 | 9,615 |
| Natchitoches Parish | 36 | -3.89% | 35,934 | 37,387 |
| Avoyelles Parish | 37 | -3.9% | 38,101 | 39,646 |
| Winn Parish | 38 | -3.93% | 13,181 | 13,720 |
| Pointe Coupee Parish | 39 | -4.28% | 19,788 | 20,673 |
| Claiborne Parish | 40 | -4.34% | 13,491 | 14,103 |
| Iberia Parish | 41 | -4.36% | 66,998 | 70,055 |
| Red River Parish | 42 | -4.42% | 7,247 | 7,582 |
| St. Charles Parish | 43 | -4.44% | 50,182 | 52,513 |
| Jefferson Parish | 44 | -5.05% | 417,524 | 439,725 |
| Calcasieu Parish | 45 | -5.2% | 205,234 | 216,481 |
| Webster Parish | 46 | -5.24% | 34,949 | 36,883 |
| Assumption Parish | 47 | -5.28% | 19,857 | 20,963 |
| West Carroll Parish | 48 | -5.48% | 9,165 | 9,696 |
| Caddo Parish | 49 | -5.53% | 223,838 | 236,945 |
| Plaquemines Parish | 50 | -5.57% | 22,154 | 23,460 |
| St. James Parish | 51 | -5.6% | 18,994 | 20,120 |
| St. Mary Parish | 52 | -5.8% | 46,291 | 49,142 |
| Bienville Parish | 53 | -6.14% | 12,120 | 12,913 |
| Vernon Parish | 54 | -6.15% | 45,630 | 48,622 |
| Terrebonne Parish | 55 | -6.22% | 102,600 | 109,405 |
| Orleans Parish | 56 | -6.49% | 358,355 | 383,241 |
| Concordia Parish | 57 | -6.56% | 17,350 | 18,569 |
| Catahoula Parish | 58 | -7.01% | 8,224 | 8,844 |
| St. John the Baptist Parish | 59 | -7.4% | 39,229 | 42,366 |
| Morehouse Parish | 60 | -7.73% | 23,496 | 25,465 |
| East Carroll Parish | 61 | -9.17% | 6,719 | 7,397 |
| Madison Parish | 62 | -9.22% | 9,012 | 9,927 |
| Tensas Parish | 63 | -9.57% | 3,714 | 4,107 |
| Cameron Parish | 64 | -17.48% | 4,640 | 5,623 |