| ID | Historical Marker | County |
|---|
| 14.1966.1 | Vincennes Donation Lands | Daviess |
| 17.2021.1 | Sechler's Pickles | DeKalb |
| 18.2022.1 | James Grover McDonald, 1886-1964 | Delaware |
| 35.1979.1 | Drover Town | Huntington |
| 45.1976.1 | St. John's Lutheran Church Tolleston | Lake |
| 45.1992.1 | Dutch in the Calumet Region | Lake |
| 45.2014.1 | Froebel School | Lake |
| 45.2019.2 | City Church | Lake |
| 46.2003.1 | The Rumely Companies | LaPorte |
| 49.1990.1 | Macedonian Tribune | Marion |
| 49.1992.2 | Greek Orthodox Church | Marion |
| 49.1995.1 | Bulgarian Orthodox Church | Marion |
| 49.1998.1 | Romanian Orthodox Church | Marion |
| 49.1998.3 | German Greenhouses and Truck Gardens | Marion |
| 49.1999.2 | Athenaeum | Marion |
| 49.1999.3 | Market Street Temple | Marion |
| 49.2000.1 | Holy Rosary-Danish Church Historic District | Marion |
| 49.2003.2 | Greek Orthodox Church | Marion |
| 49.2017.2 | German Newspapers' Demise | Marion |
| 49.2019.1 | Romanian Orthodox Church | Marion |
| 49.2020.3 | Greek Orthodox Church | Marion |
| 49.2023.4 | The Syrian Quarter | Marion |
| 49.2023.5 | South Side Turnverein | Marion |
| 57.2014.1 | Ahavath Sholom | Noble |
| 71.2002.1 | Jewish Cemetery Site | St. Joseph |
| 78.2022.1 | Thiebaud Farmstead | Switzerland |
| 84.2018.1 | Little Syria on the Wabash | Vigo |
| 84.2023.1 | Hungarian Community | Vigo |
| 85.2000.1 | St. Patrick's Roman Catholic Church | Wabash |
