Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Burtons Chapel | Church | 8 | Sussex | 38 46 13 N | 075 13 54 W |
| Burwood | Populated Place | 13 | Kent | 39 05 34 N | 075 33 43 W |
| Burwood Farms | Populated Place | 13 | Kent | 39 05 34 N | 075 33 43 W |
| Bush Island | Island | -3 | Sussex | 38 28 56 N | 075 03 53 W |
| Bush Island | Island | 3 | Sussex | 38 37 55 N | 075 04 37 W |
| Bush Manor | Populated Place | 12 | Kent | 39 12 28 N | 075 33 48 W |
| Butler Mill Branch | Stream | | Sussex | 38 36 56 N | 075 38 31 W |
| Buttonwood | Populated Place | 4 | New Castle | 39 41 00 N | 075 33 24 W |
| Buttonwood School | School | 7 | New Castle | 39 40 46 N | 075 32 59 W |
| Buzzard Swamp | Swamp | 4 | Sussex | 38 50 09 N | 075 17 38 W |
| Byewood Manor | Populated Place | 3 | Sussex | 38 33 37 N | 075 07 11 W |
| Byrds African Methodist Episcopal Church | Church | 12 | Kent | 39 17 32 N | 075 37 51 W |
| C H Foggie American Methodist Episcopal Zion Church | Church | 15 | Sussex | 38 44 21 N | 075 36 44 W |
| C W Cullen Bridge | Bridge | 4 | Sussex | 38 36 33 N | 075 03 46 W |
| Cabbage Corner | Locale | 14 | Sussex | 38 40 50 N | 075 21 16 W |
| Caesar Rodney Helistop | Airport | 9 | Kent | 39 08 58 N | 075 30 18 W |
| Caesar Rodney High School | School | 12 | Kent | 39 07 07 N | 075 32 29 W |
| Caesar Rodney Junior High School | School | 13 | Kent | 39 06 57 N | 075 33 03 W |
| Caesar Rodney School District | Civil | 12 | Kent | 39 07 08 N | 075 32 30 W |
| Cahoon Branch | Stream | | Kent | 39 11 30 N | 075 33 34 W |
| Cains Landing | Locale | 1 | Kent | 38 57 28 N | 075 21 36 W |
| Caleb Pond | Lake | 1 | Sussex | 38 51 22 N | 075 15 31 W |
| Calhoun Landing | Populated Place | -3 | Sussex | 38 35 33 N | 075 07 14 W |
| Calvary Assembly of God | Church | 115 | New Castle | 39 48 47 N | 075 32 13 W |
| Calvary Assembly of God Church | Church | 9 | Kent | 39 08 36 N | 075 31 32 W |
| Calvary Baptist Church | Church | 20 | Kent | 39 09 23 N | 075 37 53 W |
| Calvary Baptist Church | Church | 34 | New Castle | 39 40 55 N | 075 44 49 W |
| Calvary Church of the Nazarene | Church | 11 | Kent | 39 07 59 N | 075 31 47 W |
| Calvary Methodist Church | Church | 5 | Sussex | 38 54 45 N | 075 25 28 W |
| Calvary Presbyterian Church | Church | 31 | New Castle | 39 44 08 N | 075 34 21 W |
| Calvary United Methodist Church | Church | 31 | New Castle | 39 45 40 N | 075 31 44 W |
| Calvary Wesleyan Church | Church | 16 | Kent | 38 55 43 N | 075 34 20 W |
| Calvary Wesleyan Church | Church | 14 | Sussex | 38 29 00 N | 075 21 55 W |
| Camden | Populated Place | 12 | Kent | 39 06 48 N | 075 32 31 W |
| Camelot Mobile Home Park | Populated Place | 9 | Sussex | 38 43 12 N | 075 07 10 W |
| Cameron Hills | Populated Place | 97 | New Castle | 39 47 35 N | 075 41 39 W |
| Camp Barnes | Locale | 3 | Sussex | 38 30 11 N | 075 05 41 W |
| Camp Otonka | Locale | 3 | Sussex | 38 34 12 N | 075 10 41 W |
| Canadas Beach | Locale | 1 | New Castle | 39 31 17 N | 075 34 23 W |
| Canal Bridge | Bridge | 12 | New Castle | 39 32 45 N | 075 42 09 W |
| Canal Pond | Lake | 0 | Sussex | 38 30 42 N | 075 03 54 W |
| Canal Station | Locale | 18 | New Castle | 39 33 10 N | 075 42 04 W |
| Canal Wildlife Area | Park | 31 | New Castle | 39 32 20 N | 075 43 29 W |
| Canary Creek | Stream | | Sussex | 38 47 24 N | 075 09 49 W |
| Canby Park | Park | 15 | New Castle | 39 44 14 N | 075 34 45 W |
| Canby Park Estates | Populated Place | 25 | New Castle | 39 44 20 N | 075 34 54 W |
| Candlewicke | Populated Place | 10 | Kent | 39 07 15 N | 075 31 12 W |
| Cann Mansion (historical) | Building | 19 | New Castle | 39 34 25 N | 075 41 34 W |
| Cannon | Populated Place | 12 | Sussex | 38 41 58 N | 075 36 54 W |
| Cannon Mennonite Church | Church | 12 | Sussex | 38 41 49 N | 075 36 41 W |
| Cannon United Methodist Church | Church | 12 | Sussex | 38 41 56 N | 075 36 54 W |
| Cantebury Apartments | Populated Place | 12 | Sussex | 38 44 34 N | 075 35 33 W |
| Canterbury | Populated Place | 17 | Kent | 39 02 33 N | 075 33 20 W |
| Canterbury Hills | Populated Place | 87 | New Castle | 39 45 45 N | 075 39 14 W |
| Cape Henlopen | Cape | 3 | Sussex | 38 48 11 N | 075 05 41 W |
| Cape Henlopen Junior High School | School | 3 | Sussex | 38 45 53 N | 075 08 39 W |
| Cape Henlopen State Park | Park | 1 | Sussex | 38 46 00 N | 075 05 44 W |
| Cape Windsor Mobile Home Park | Populated Place | 0 | Sussex | 38 27 13 N | 075 04 24 W |
| Capes Cove Mobile Home Park | Populated Place | 6 | Sussex | 38 45 51 N | 075 10 09 W |
| Capital Trail Farms | Populated Place | 29 | New Castle | 39 43 45 N | 075 38 44 W |
| Capitol Baptist Church | Church | 10 | Kent | 39 08 10 N | 075 32 09 W |
| Capitol Green | Populated Place | 5 | Kent | 39 09 18 N | 075 31 01 W |
| Capitol Park | Populated Place | 7 | Kent | 39 08 29 N | 075 30 15 W |
| Captains Grant Mobile Home Park | Populated Place | 3 | Sussex | 38 36 10 N | 075 11 04 W |
| Caravel Academy | School | 22 | New Castle | 39 35 52 N | 075 42 56 W |
| Caravel Farms | Populated Place | 22 | New Castle | 39 35 45 N | 075 43 14 W |
| Cardiff | Populated Place | 114 | New Castle | 39 48 48 N | 075 32 17 W |
| Carey Camp | Locale | 14 | Sussex | 38 33 30 N | 075 22 01 W |
| Carey Cemetery | Cemetery | 10 | Sussex | 38 30 49 N | 075 14 12 W |
| Carey Cemetery | Cemetery | 15 | Sussex | 38 33 29 N | 075 22 27 W |
| Carey Church | Church | 14 | Sussex | 38 33 31 N | 075 22 06 W |
| Careys Estate Mobile Home Park | Populated Place | 14 | Sussex | 38 33 12 N | 075 22 05 W |
| Carlisle Village | Populated Place | 13 | Kent | 39 11 15 N | 075 34 44 W |
| Carney Run | Stream | | New Castle | 39 49 02 N | 075 34 10 W |
| Carousel Farm Park | Park | 66 | New Castle | 39 43 40 N | 075 41 06 W |
| Carousel Knoll | Populated Place | 46 | New Castle | 39 43 45 N | 075 40 29 W |
| Carpenter | Populated Place | 48 | New Castle | 39 49 06 N | 075 27 52 W |
| Carpenters Bridge | Bridge | 2 | Kent | 38 59 20 N | 075 29 39 W |
| Carpenters Corner | Populated Place | 8 | Sussex | 38 44 33 N | 075 09 01 W |
| Carrcroft | Populated Place | 79 | New Castle | 39 47 15 N | 075 30 22 W |
| Carrcroft Crest | Populated Place | 77 | New Castle | 39 47 30 N | 075 30 14 W |
| Carrcroft Elementary School | School | 77 | New Castle | 39 47 17 N | 075 30 09 W |
| Carrcroft Station | Locale | 61 | New Castle | 39 46 50 N | 075 30 24 W |
| Carriage Lane | Populated Place | 7 | Kent | 39 06 34 N | 075 31 22 W |
| Carriage Run (subdivision) | Populated Place | 18 | New Castle | 39 40 00 N | 075 37 59 W |
| Carrie Downie Elementary School | School | 6 | New Castle | 39 39 54 N | 075 34 36 W |
| Carroltown | Locale | 5 | Kent | 39 18 25 N | 075 32 31 W |
| Carsylian Acres | Populated Place | 6 | Sussex | 38 45 05 N | 075 13 49 W |
| Cart Branch | Stream | | Sussex | 38 47 21 N | 075 35 09 W |
| Carter Development | Populated Place | 12 | Kent | 39 07 11 N | 075 31 48 W |
| Casimir Pulaski Elementary School | School | 24 | New Castle | 39 44 13 N | 075 34 12 W |
| Casson Corner | Populated Place | 16 | Kent | 39 09 38 N | 075 36 30 W |
| Castle Apartments | Populated Place | 15 | New Castle | 39 40 20 N | 075 35 15 W |
| Castle Hills | Populated Place | 17 | New Castle | 39 41 11 N | 075 33 53 W |
| Castle Hills Elementary School | School | 9 | New Castle | 39 40 52 N | 075 34 01 W |
| Castle Mall | Locale | 24 | New Castle | 39 39 32 N | 075 44 13 W |
| Castlewood Industrial Park | Locale | 3 | New Castle | 39 42 20 N | 075 31 54 W |
| Cat Hill | Summit | 1 | Sussex | 38 31 12 N | 075 03 53 W |
| Cat Hill Marsh | Swamp | 1 | Sussex | 38 31 00 N | 075 03 54 W |
| Catalina Gardens | Populated Place | 24 | New Castle | 39 39 05 N | 075 44 44 W |
| Catfish Bridge | Bridge | 8 | Sussex | 38 39 07 N | 075 19 26 W |
| Cathedral Cemetery | Cemetery | 39 | New Castle | 39 44 47 N | 075 34 51 W |
| Cathedral Church of Saint John | Church | 17 | New Castle | 39 45 08 N | 075 32 29 W |
| Cathedral of the Faith | Church | 9 | Sussex | 38 38 22 N | 075 34 21 W |
| Cattail Branch | Stream | | Kent | 38 50 18 N | 075 41 31 W |
| Cattail Gut | Gut | -9 | Kent | 39 09 07 N | 075 25 27 W |
| Cavaliers Country Club | Locale | 21 | New Castle | 39 40 59 N | 075 38 30 W |
| Cavaliers Country Club Apartments | Populated Place | 21 | New Castle | 39 41 04 N | 075 38 47 W |
| Cave Colony | Populated Place | 10 | Sussex | 38 45 50 N | 075 17 24 W |
| Cave Neck | Cape | 6 | Sussex | 38 46 25 N | 075 16 18 W |