Indiana - Area of significance: Commerce
| Elkhart Downtown Commercial Historic District |
| Ellettsville Downtown Historic District |
| Elston Grove Historic District |
| Elwood Downtown Historic District |
| Emelie |
| Enterprise Hotel |
| Evansville Downtown Historic District |
| Evansville Municipal Market |
| Fairfield Manor |
| Fairmount Commercial Historic District |
| Farington's Grove Historic District |
| Farmland Downtown Historic District |
| Fellwock Garage |
| Ferdinand Historic District |
| Feustel, Robert M., House |
| Fidelity Trust Building |
| Firestone Tire and Rubber Store |
| Fletcher Place Historic District |
| Fort Ouiatenon |
| Fountain City Historic District |
| Frankfort Commercial Historic District |
| Franklin Commercial Historic District |
| Franklin Street Commercial Historic District |
| Garner, Job-Miller, Jacob W., House |
| Gary City Center Historic District |
| Gaseteria, Inc. |
| Geneva Downtown Commercial Historic District |
| German Bank |
| Gilbert, Goldsmith C., Historic District |
| Glencoe |
| Glossbrenner, Alfred M., Mansion |
| Goshen Historic Distriict |
| Gosport Historic District |
| Grassyfork Fisheries Farm No. 1 |
| Greenfield Courthouse Square Historic District |
| Greensburg Downtown Historic District |
| Greentown Commercial Historic District |
| Greenwood Commercial Historic District |
| Griffith State Bank |
| Grover |
| Hack and Simon Office Building |
| Harriett |
| Hartford City Courthouse Square Historic District |
| Haubstadt State Bank |
| Hedrick, John W., House |
| Heier's Hotel |
| Helfrich, Michael D., House |
| Hinkle, W. R., and Co. |
| Hirt, Alfred, House |
| Hobart Commercial District |
| Hoffman Hotel |
| Hoham-Klinghammer-Weckerle House and Brewery Site |
| Hohman Avenue Commercial Historic District |
| Hoover, Eli, House and Confectionary |
| Hope Historic District |
| Hotel LaFontaine |
| Hotel Washington |
| Huber Motor Sales Building |
| Huddleston House Tavern, The |
| Huntingburg Commercial Historic District |
| Huntington Courthouse Square Historic District |
| Hurlbert, Lewis, Sr., House |
| Hy-Red Gasoline Station |
| Illinois Central Railroad Freight Depot |
| Independence Historic District |
| Indiana Limestone Company Building |
| Indianapolis Union Railroad Station |
| Indianapolis Union Station-Wholesale District |
| Indianapolis White Castle Number 3 |
| Irwin Union Bank and Trust, Eastbrook Plaza Branch |
| Jackson, Joseph, Hotel |
| Jasper Downtown Historic District |
| Kahn Tailoring Company |
| Kelley-Fredrickson House and Office Building |
| Kendallville Downtown Historic District |
| Kendrick-Baldwin House (Cass County Memorial Home) Additional Documentation) |
| Keplinger, Harry A., House |
| Kerr, William, House |
| Kirshbaum, Raphael, Building |
| Kixmiller's Store |
| Knightstown Historic District |
| Koester/Patburg House |
| Kokomo Courthouse Square Historic District |
| LaFontaine Historic District |
| Lake Erie and Western Depot Historic District |
| Landing, The, Historic District |
| LaSalle Annex |
| LaSalle Hotel |
| Lassen Hotel |
| Laurel and Prospect District |
| Learner Building |
| Lebanon Courthouse Square Historic District |
| Leeper, Samuel, Jr., House |
| Leesburg Historic District |
| Leland Hotel |
| Lentz House (Hotel Sheller) |
| Liberty Courthouse Square Historic District |
| Ligonier Historic District |
| Lincolnshire Historic District |
| Linton Commercial Historic District |
Data from United States Park Service and Wikidata
