| Museum | Location | County |
|---|
| Air Mobility Command Museum | Dover Air Force Base | Kent |
| Amstel House | New Castle | New Castle |
| Anna Hazzard Museum | Rehoboth Beach | Sussex |
| Barratt's Chapel and Museum | Frederica | Kent |
| Bethany Beach History Museum | Bethany Beach | Sussex |
| Bethel Heritage Museum | Bethel | Sussex |
| Biggs Museum of American Art | Dover | Kent |
| Blue Ball Barn | Wilmington | New Castle |
| Bridgeville Historical Society Museum | Bridgeville | Sussex |
| Cannonball House Maritime Museum | Lewes | Sussex |
| Center for the Creative Arts | Yorklyn | New Castle |
| Coverdale Farm Preserve | Greenville | New Castle |
| Days Gone By Museum | Seaford | Sussex |
| Delaware Agricultural Museum and Village | Dover | Kent |
| Delaware Art Museum | Wilmington | New Castle |
| Delaware Aviation Museum | Georgetown | Sussex |
| Delaware Center for the Contemporary Arts | Wilmington | New Castle |
| Delaware Center for Horticulture | Greenville | New Castle |
| Delaware Children's Museum | Wilmington | New Castle |
| Delaware History Museum | Wilmington | New Castle |
| Delaware Mineralogical Society | Wilmington | New Castle |
| Delaware Museum of Natural History | Greenville | New Castle |
| Delaware Sports Museum and Hall of Fame | Wilmington | New Castle |
| Delaware Legislative Hall | Dover | Kent |
| Delaware State Police Museum | Dover | Kent |
| Delaware Visitor Center and Galleries | Dover | Kent |
| Delmar Depot Railroad and Military Museum | Delmar | Sussex |
| Discover Sea Shipwreck Museum | Fenwick Island | Sussex |
| Dutch House (New Castle, Delaware) | New Castle | New Castle |
| Elsie Williams Doll Collection | Georgetown | Sussex |
| Fenwick Island Light | Fenwick Island | Sussex |
| First Presbyterian Church | Wilmington | New Castle |
| Fort Delaware | Pea Patch Island | New Castle |
| Georgetown Train Station | Georgetown | Sussex |
| Governor Ross Mansion & Plantation | Seaford | Sussex |
| Greenbank Mill | Wilmington | New Castle |
| Hagley Museum & Library | Wilmington | New Castle |
| Hale-Byrnes House | Stanton | New Castle |
| Harrington Historical Society Museum | Harrington | Kent |
| Harry Levin Center for Pharmacy & History | Smyrna | Kent |
| Historic Houses of Odessa | Odessa | New Castle |
| Indian River Lifesaving Station Museum | Rehoboth Beach | Sussex |
| Iron Hill Museum | Newark | New Castle |
| John Bell House | Dover | Kent |
| John Dickinson Plantation | Dover | Kent |
| Johnson Victrola Museum | Dover | Kent |
| Laurel Heritage Museum | Laurel | Sussex |
| Lewes Historical Society Complex | Lewes | Sussex |
| Lightship Overfalls | Lewes | Sussex |
| Marshall Steam Museum | Yorklyn | New Castle |
| Marvel Carriage Museum | Georgetown | Sussex |
| Messick Museum | Harrington | Sussex |
| Milford Museum | Milford | Sussex |
| Milton Historical Society Museum | Milton | Sussex |
| Museum of Business History & Technology | Wilmington | New Castle |
| Nanticoke Indian Museum | Millsboro | Sussex |
| Nemours Mansion and Gardens | Wilmington | New Castle |
| Newark Historical Society Museum | Newark | New Castle |
| New Castle Court House Museum | New Castle | New Castle |
| Old State House | Dover | Kent |
| Old Library Museum | New Castle | New Castle |
| Old Swedes Church | Wilmington | New Castle |
| Old Town Hall | Wilmington | New Castle |
| Paul R. Jones Collection of African American Art | Newark | New Castle |
| Parson Thorne Mansion | Milford | Kent |
| Pencader Heritage Museum | Newark | New Castle |
| Read House & Gardens | New Castle | New Castle |
| Rehoboth Art League | Rehoboth Beach | Sussex |
| Rehoboth Beach Museum | Rehoboth Beach | Sussex |
| Robinson House | Claymont | New Castle |
| Rockwood Museum and Park | Wilmington | New Castle |
| Seaford Fire Museum | Seaford | Sussex |
| Seaford Museum | Seaford | Sussex |
| Smyrna Museum | Smyrna | Kent |
| Star Hill Museum | Camden | Kent |
| Treasures of the Sea Exhibit | Georgetown | Sussex |
| University Gallery | Newark | New Castle |
| University of Delaware Mineralogical Museum | Newark | New Castle |
| Willingtown Square | Wilmington | New Castle |
| Winterthur Museum, Garden and Library | Wilmington | New Castle |
| Woodburn | Dover | Kent |
| Zwaanendael Museum | Lewes | Sussex |
