| ID | Historical Marker | County |
|---|
| 02.1963.1 | Camp Allen 1861-64 | Allen |
| 03.2000.1 | Bartholomew County Courthouse | Bartholomew |
| 03.2007.2 | Atterbury Army Air Field | Bartholomew |
| 04.1966.1 | New Purchase Boundary (Treaty of St. Mary's) | Benton |
| 04.1995.1 | Benton County Courthouse | Benton |
| 05.1989.1 | Godfroy Reserve | Blackford |
| 05.1994.1 | Blackford County Courthouse | Blackford |
| 06.1961.1 | Indian Cemetery Eel River Tribe of Miamis | Boone |
| 08.1966.1 | New Purchase Boundary (Treaty of St. Mary's) | Carroll |
| 10.194?.1 | Clarksville | Clark |
| 10.1962.1 | Civil War Hospital 1864-66 | Clark |
| 10.2006.1 | Indiana State Prison | Clark |
| 11.2001.1 | Clay County Courthouse | Clay |
| 14.1966.1 | Vincennes Donation Lands | Daviess |
| 15.1966.2 | Greenville Treaty Line* | Dearborn |
| 15.1966.3 | Greenville Treaty Line* | Dearborn |
| 16.1980.1 | Decatur County Court House | Decatur |
| 19.2021.1 | State Police Jasper Post | Dubois |
| 20.1966.1 | Indiana Territory Line | Elkhart |
| 20.2001.2 | Elkhart County Courthouse | Elkhart |
| 22.1966.1 | Site of Camp Whitcomb | Floyd |
| 22.1992.3 | Clark's Grant | Floyd |
| 22.1996.1 | State Bank of Indiana | Floyd |
| 24.1995.3 | Intersection of Treaty Lines | Franklin |
| 27.1966.1 | New Purchase Boundary (Treaty of St. Mary's) | Grant |
| 31.1948.1 | Indiana Capitol | Harrison |
| 31.1962.1 | First State Office Building | Harrison |
| 31.1962.2 | First State Capital | Harrison |
| 31.1963.3 | First State Capital | Harrison |
| 31.1964.1 | First State Capital | Harrison |
| 31.1964.2 | First State Capital | Harrison |
| 31.1965.2 | Harrison County Jail | Harrison |
| 35.2005.1 | Kiilhsoohkwa (Kilsoquah) | Huntington |
| 36.1951.1 | Fort Vallonia | Jackson |
| 36.1966.1 | Indian Treaty Corner | Jackson |
| 36.1997.1 | Freeman Field | Jackson |
| 36.1997.2 | Freeman Field | Jackson |
| 37.2006.1 | Remington Water Tower | Jasper |
| 40.1966.1 | Grouseland Treaty Line (August 21, 1805) | Jennings |
| 42.1966.2 | Fort Knox, First Site | Knox |
| 42.2011.1 | Tecumseh and Harrison | Knox |
| 43.1962.1 | Papakeechie's Reserve | Kosciusko |
| 43.2003.1 | Kosciusko County Jail | Kosciusko |
| 46.1962.1 | Civil War Camps | LaPorte |
| 46.1996.1 | Camp Anderson | LaPorte |
| 46.1999.1 | Indiana Territory Boundary Line | LaPorte |
| 46.2001.1 | LaPorte County Courthouse | LaPorte |
| 47.1998.1 | Bedford Courthouse Square Historic District | Lawrence |
| 49.1946.1 | State Capitol | Marion |
| 49.1962.1 | Camp Morton 1861-65 | Marion |
| 49.1964.1 | Civil War Arsenal 1861-1864 | Marion |
| 49.1976.1 | Former U.S. Arsenal | Marion |
| 49.1993.2 | Willard Park | Marion |
| 49.1994.1 | Indiana School for the Blind | Marion |
| 49.1996.1 | Fort Benjamin Harrison | Marion |
| 49.1999.1 | Indianapolis Fire Department / Bowen-Merrill Fire | Marion |
| 49.2017.4 | First Lady Caroline Harrison | Marion |
| 50.2011.1 | Benack's Village* | Marshall |
| 52.1992.2 | House of Chief Richardville | Miami |
| 53.2001.1 | Monroe County Courthouse | Monroe |
| 54.2000.1 | Montgomery County Rotary Jail | Montgomery |
| 57.1963.1 | Camp Mitchell | Noble |
| 57.1999.1 | Noble County Seat / Noble County Courthouse | Noble |
| 59.1966.1 | Freeman's Corner (250 feet east) | Orange |
| 60.1966.1 | Camp Hughes | Owen |
| 60.1997.1 | Owen County Courthouse | Owen |
| 61.1968.1 | 10 O'Clock Line | Parke |
| 61.1968.2 | 10 O'Clock Line | Parke |
| 67.1966.1 | 10 O'Clock Treaty Line | Putnam |
| 69.2016.1 | Bilby Steel Tower | Ripley |
| 71.1963.1 | Camp Rose | St. Joseph |
| 71.1966.1 | Indiana Territorial Line (east-west boundary at this point) | St. Joseph |
| 72.2001.1 | Scott County Courthouse | Scott |
| 72.2002.2 | Scott County Home | Scott |
| 72.2002.3 | Lexington First County Seat | Scott |
| 72.2002.5 | Northern Boundary of Clark's Grant | Scott |
| 73.2011.1 | Whetzel Trace | Shelby |
| 76.2000.1 | Indiana's Northern Boundary Line | Steuben |
| 79.1995.1 | Cairo Skywatch Tower | Tippecanoe |
| 80.1966.1 | New Purchase Boundary (Treaty of St. Mary's) | Tipton |
| 80.1994.1 | Tipton County Courthouse | Tipton |
| 82.2003.1 | Ohio River Levee | Vanderburgh |
| 82.2007.1 | Sheriff's Residence and Jail | Vanderburgh |
| 83.2001.1 | Vermillion County Jail | Vermillion |
| 84.1947.1 | Terre Haute [Site of Old Fort Harrison]* | Vigo |
| 84.2004.1 | Wea Tribe at Terre Haute | Vigo |
| 85.1962.1 | Camp Wabash 1862-65 | Wabash |
| 85.1992.1 | Paradise Spring Treaty Ground | Wabash |
| 85.1995.1 | Miami Indian Mills | Wabash |
| 88.1998.1 | Washington County Courthouse / Salem Downtown Historic District | Washington |
| 89.1963.2 | Camp Wayne* | Wayne |
| 91.1992.1 | Trooper Paul Vincent Minneman | White |
