.Parishes, Year formed, and which Parish each was formed from...
| A..... B..... C..... D..... E..... F..... G..... I..... J..... L..... M..... | ||
| Parish | Date Formed | From? | 
| Top of Page | ||
| Acadia | 1886 | St. Landry | 
| Allen | 1912 | Calcasieu | 
| Ascension | 1807 | ..... | 
| Assumption | 1807 | ..... | 
| Avoyelles | 1807 | Top of Page | 
| Beauregard | 1912 | Calcasieu | 
| Bienville | 1848 | Claiborne | 
| Bossier | 1843 | Claiborne | 
| Top of Page | ||
| Caddo | 1838 | Natchitoches | 
| Calcasieu | 1840 | St. Landry | 
| Caldwell | 1838 | Catahoula, Ouachita | 
| Cameron | 1870 | Calcasieu, Vermilion | 
| Catahoula | 1808 | ..... | 
| Claiborne | 1828 | Natchitoches | 
| Concordia | 1807 | ..... | 
| Top of Page | ||
| DeSoto | 1843 | Caddo, Natchitoches | 
| Parish | Date Formed | From? | 
| Top of Page | ||
| E. Baton Rouge | 1810 | ..... | 
| E. Carroll | 1832 & 1877 | 1832 from Concordia, Ouachita; 1877: E. & W. Carroll | 
| E. Feliciana | 1824 | see Feliciana; then E. & W. Feliciana | 
| Evangeline | 1910 | St. Landry | 
| Top of Page | ||
| Feliciana | 1810 | ******** | 
| Franklin | 1843 | Catahoula, Ouachita, Madison | 
| G----I | Top of Page | |
| Grant | 1869 | Rapides, Winn | 
| Iberia | 1868 | St. Martin, St. Mary | 
| Iberville | 1807 | ..... | 
| Top of Page | ||
| Jackson | 1845 | Claiborne, Ouachita, Union | 
| Jefferson | 1825 | Orleans | 
| Jefferson Davis | 1912 | Calcasieu | 
| Top of Page | ||
| Lafayette | 1823 | St. Martin | 
| Lafourche | 1807 | ..... | 
| LaSalle | 1908 | Catahoula | 
| Lincoln | 1873 | Bienville, Claiborne, Jackson, Union | 
| Parish | Date Formed | From? | 
| Livingston | 1832 | St. Helena | 
| Top of Page | ||
| Madison | 1838 | Concordia | 
| Morehouse | 1844 | Ouachita | 
| Natchitoches | 1807 | ..... | 
| O-----P | ||
| Orleans | 1807 | ..... | 
| Ouachita | 1807 | ..... | 
| Plaquemines | 1807 | ..... | 
| Pointe Coupe | 1807 | ..... | 
| Top of Page | ||
| Rapides | 1807 | ..... | 
| Red River | 1871 | Bienville, Bossier, Caddo, DeSoto, Natchitoches | 
| Richland | 1868 | Carroll, Franklin, Morehouse, Ouachita | 
| Top of Page | ||
| Sabine | 1843 | Natchitoches | 
| St. Bernard | 1807 | ..... | 
| St. Charles | 1807 | ..... | 
| St. Helena | 1810 | ..... | 
| St. James | 1807 | ..... | 
| St. John the Baptist | 1807 | ..... | 
| PARISH | DATE FORMED | FROM? | 
| St. Landry | 1807 | ..... | 
| St. Martin | 1807 | ..... | 
| St. Mary | 1811 | ..... | 
| St. Tammany | 1810 | ..... | 
| Top of Page | ||
| Tangipahoa | 1869 | Livingston, St. Helena, St. Tammany, Washington | 
| Tensas | 1843 | Concordia | 
| Terrebonne | 1822 | Lafourche | 
| Top of Page | ||
| Union | 1839 | Ouachita | 
| Vermilion | 1844 | Lafayette | 
| Vernon | 1871 | Rapides, Natchitoches, Sabine | 
| Washington | 1819 | St. Tammany | 
| Webster | 1871 | Bienville, Bossier, Claiborne | 
| W. Baton Rouge | 1807 | ..... | 
| W. Carroll | 1877 | see East Carroll | 
| W. Feliciana | 1824 | see East Feliciana | 
| Winn | 1852 | Catahoula, Rapides, Natchitoches |