Maryland - Area of significance: Agriculture
| Annington |
| Antietam National Battlefield |
| Arter, Solomon, House |
| Ash Hill |
| Ashland |
| Baker Farm |
| Baltimore and Ohio Locust Point Grain Terminal Elevator |
| Baltimore Federal Savings & Loan Association |
| Bennett-Kelly Farm |
| Breakneck Road Historic District |
| Bunker Hill |
| Carroll County Almshouse and Farm |
| Cedar Park |
| Clay's Hope |
| Clifton School |
| Darnall Place |
| Ditto Knolls |
| Doub Farm |
| Drummine Farm |
| East Oaks |
| Ellicott City Historic District |
| Erb, Christopher, House |
| Evergreen |
| Eyler, John, Farmstead |
| Funk, Jacob M., Farm |
| Guilford |
| Hampton National Historic Site |
| Hancock's Resolution |
| Hanover Farm House |
| Harris Farm |
| Hoffman Farm |
| Hogmire-Berryman Farm |
| Holly Hall |
| Hope House |
| Hopewell |
| Keedy House |
| Keefer-Brubaker Farm |
| Kefauver Place |
| Kitterman-Buckey Farm |
| Koons, Jacob, Farm |
| Linchester Mill |
| Linganore Farm |
| Long Green Valley Historic District |
| Long Island Farm |
| Maddox, George, Farm |
| Mannheim |
| Maple Leaf Farm Potato House |
| McCauley, Henry, Farm |
| McPherson's Purchase |
| Meadow Brook Farm |
| Miller's House |
| Milton |
| Mount Airy |
| Mount Harmon |
| Mt. Pleasant |
| My Lady's Manor |
| Nallin Farm Springhouse and Bank Barn |
| Nicodemus Mill Complex |
| Norris-Stirling House |
| Oakland |
| Oak Lawn |
| Oakwood |
| Octorara Farm |
| Old Bloomfield |
| Old Chiswell Place |
| Olney |
| Owens, James, Farm |
| Owensville Historic District |
| Oxon Cove Park |
| Paradise Manor |
| Perry Hall |
| Perry Point Mansion House and Mill |
| Piney Grove |
| Radcliffe Mill |
| Remington Historic District |
| Richland |
| Richland Farm |
| Riversdale |
| Roberts Inn |
| Rosemary Lawn |
| Routzahn-Miller Farmstead |
| Sandy Point Farmhouse |
| Shaffer, Jacob F., Farm |
| Shawnee Old Fields Village Site |
| Sheffer, Daniel, Farm |
| Smeltzer, Henry, Farmstead |
| Snively Farm |
| Thainston |
| Thornton |
| Turkey Hill |
| Uniontown Historic District |
| Valentia |
| Victorian Corn Cribs |
| Westminster Historic District |
| Willow Glenn |
| Willows, The |
| Wilson-Miller Farm |
| Wilson's Inheritance |
| Winemiller Family Farm |
| Woodlands |
Data from United States Park Service and Wikidata
