Louisiana - Area of significance: Politics/Government
| 1939 St. Bernard Parish Courthouse |
| Academy of the Sacred Heart |
| Allen Parish Courthouse |
| Arlington Plantation |
| Ashland |
| Battleground Plantation |
| Bernard, Joseph D., House |
| Blanchard House |
| Bogalusa City Hall |
| Bossier City Municipal Building |
| Buchler, Conrad A., House |
| Calcasieu Parish Courthouse |
| Carter House |
| Carter Plantation |
| Colfax Jail |
| Cottage Plantation |
| DELUGE |
| Denham Springs City Hall |
| Dixie Plantation House |
| East Feliciana Parish Courthouse |
| Faubourg Marigny |
| Federal Building |
| Federal Building |
| Ferry Place |
| Fontainebleau State Park |
| Frederick House |
| Fuqua Hardware Store Building |
| Gallier Hall |
| Garrett, Isaiah, Law Office |
| Glynnwood |
| Gum Springs Recreation Area |
| Hall, Gov. Luther, House |
| Hart House |
| Heidelberg Hotel |
| Highland |
| Iberville Parish Courthouse |
| Jackson Historic District |
| Jackson Square |
| Jones House |
| Kenner Town Hall |
| Lafayette Central Business District |
| Lafourche Parish Courthouse |
| Lake Charles City Hall, Old |
| Leeds Iron Foundry |
| Livingston Parish Courthouse, Old |
| Long, Huey P., House |
| Long, Huey P., Mansion |
| Los Adaes |
| Louisiana State Capitol Building and Gardens |
| Madisonville Town Hall |
| Magee, Nehemiah, House |
| Manship House |
| May, David L. and Jeanette Ross, House |
| Morgan City City Hall and Courthouse |
| Mouton, Alexandre, House |
| Old Commercial National Bank Building |
| Old Courthouse Square |
| Old Lafayette City Hall |
| Old Louisiana Governor's Mansion |
| Old Louisiana State Capitol |
| Old Pineville Town Hall |
| Old Post Office |
| Pitre, Vic House |
| Poche', Judge Felix, Plantation House |
| Promised Land |
| Rankin House |
| Rault Center, The |
| Rosale Plantation |
| Sanders, Jared Young, Jr., House |
| Steamboat House |
| St. Joseph Historic District |
| St. Louis Plantation |
| St. Martin Parish Courthouse |
| Tensas Parish Courthouse |
| U.S. Court of Appeals-Fifth Circuit |
| U.S. Customhouse |
| U.S. Post Office and Courthouse |
| US Post Office and Courthouse-Alexandria |
| US Post Office and Courthouse-Baton Rouge |
| U.S. Quarantine Station |
| Ville Platte Post Office |
| White, Edward Douglass, House |
Data from United States Park Service and Wikidata
