Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Christiana Mall | Locale | 22 | New Castle | 39 40 53 N | 075 39 14 W |
| Christiana United Methodist Church | Church | 12 | New Castle | 39 39 58 N | 075 39 43 W |
| Christiana Village | Populated Place | 8 | New Castle | 39 39 55 N | 075 39 52 W |
| Christiana-Salem Elementary School | School | 13 | New Castle | 39 40 02 N | 075 39 49 W |
| Christina Manor | Populated Place | 49 | New Castle | 39 40 45 N | 075 47 14 W |
| Christina Park | Park | 3 | New Castle | 39 44 10 N | 075 32 32 W |
| Christina River | Stream | | New Castle | 39 42 57 N | 075 30 44 W |
| Christina School District | Civil | 38 | New Castle | 39 41 01 N | 075 44 58 W |
| Church Branch | Stream | | Sussex | 38 52 03 N | 075 22 36 W |
| Church Hill | Populated Place | 97 | New Castle | 39 46 20 N | 075 40 24 W |
| Church Hill Village | Populated Place | 16 | Kent | 38 56 04 N | 075 28 33 W |
| Church of Christ | Church | 7 | Kent | 39 08 29 N | 075 31 31 W |
| Church of Christ | Church | 21 | New Castle | 39 40 20 N | 075 41 51 W |
| Church of Christ | Church | 39 | New Castle | 39 46 38 N | 075 29 28 W |
| Church of Christ | Church | 44 | New Castle | 39 44 34 N | 075 38 21 W |
| Church of Christ | Church | 9 | Sussex | 38 33 05 N | 075 14 52 W |
| Church of Christ | Church | 4 | Sussex | 38 32 39 N | 075 05 20 W |
| Church of God of Prophecy | Church | 13 | Sussex | 38 30 04 N | 075 31 30 W |
| Church of God of Prophesy | Church | 9 | Sussex | 38 40 03 N | 075 35 46 W |
| Church of Living God | Church | 11 | Kent | 39 09 37 N | 075 31 60 W |
| Church of Open Door | Church | 5 | Sussex | 38 32 50 N | 075 09 09 W |
| Church of the Ascension | Church | 28 | New Castle | 39 48 21 N | 075 27 15 W |
| Church of the Holy Child | Church | 124 | New Castle | 39 49 39 N | 075 30 54 W |
| Church of the Nativity | Church | 2 | New Castle | 39 41 44 N | 075 35 29 W |
| Church of the Nazarene | Church | 12 | Kent | 39 17 47 N | 075 36 24 W |
| Church of the Nazarene | Church | 32 | New Castle | 39 41 40 N | 075 45 04 W |
| Church of the Nazarene | Church | 9 | Sussex | 38 38 55 N | 075 37 39 W |
| Church of the Nazarine | Church | 6 | Sussex | 38 38 07 N | 075 35 38 W |
| Church of the Open Door | Church | 5 | Sussex | 38 32 51 N | 075 09 08 W |
| Church Tabernacle | Church | 12 | Sussex | 38 52 14 N | 075 25 54 W |
| Circle Haven Mobile Home Park | Populated Place | 15 | Kent | 38 56 10 N | 075 33 39 W |
| Clarence Vinson Bridge | Bridge | 12 | Kent | 39 05 26 N | 075 30 51 W |
| Claridge Court | Populated Place | 6 | New Castle | 39 38 54 N | 075 37 16 W |
| Clark Point | Cape | 0 | Kent | 39 01 23 N | 075 20 38 W |
| Clarks Ditch (historical) | Gut | 1 | Kent | 39 01 18 N | 075 20 59 W |
| Clarksons Crossroads | Populated Place | 15 | Sussex | 38 42 52 N | 075 39 09 W |
| Clarksville | Populated Place | 5 | Sussex | 38 32 56 N | 075 08 52 W |
| Clarksville Branch | Stream | | Sussex | 38 33 48 N | 075 09 16 W |
| Clay Acres | Populated Place | 25 | New Castle | 39 35 35 N | 075 42 44 W |
| Claymont | Populated Place | 22 | New Castle | 39 48 02 N | 075 27 35 W |
| Claymont Addition | Populated Place | 33 | New Castle | 39 47 55 N | 075 28 14 W |
| Claymont Center | Locale | 26 | New Castle | 39 48 09 N | 075 27 15 W |
| Claymont Heights | Populated Place | 33 | New Castle | 39 47 45 N | 075 28 14 W |
| Claymont High School | School | 31 | New Castle | 39 48 10 N | 075 27 56 W |
| Claymont Manor (subdivision) | Populated Place | 15 | New Castle | 39 48 00 N | 075 27 16 W |
| Claymont Terrace (subdivision) | Populated Place | 31 | New Castle | 39 48 05 N | 075 27 49 W |
| Claymont Village (subdivision) | Populated Place | 15 | New Castle | 39 47 56 N | 075 27 28 W |
| Clayton | Populated Place | 14 | Kent | 39 17 26 N | 075 38 04 W |
| Clayton Elementary School | School | 15 | Kent | 39 17 15 N | 075 38 14 W |
| Clayton Park | Park | 45 | New Castle | 39 44 46 N | 075 34 08 W |
| Clear Brook | Stream | | Sussex | 38 38 27 N | 075 36 22 W |
| Clearfield | Populated Place | 19 | New Castle | 39 43 55 N | 075 35 39 W |
| Clearview Manor | Populated Place | 20 | New Castle | 39 42 20 N | 075 34 04 W |
| Cleland Heights | Populated Place | 33 | New Castle | 39 44 05 N | 075 34 29 W |
| Clendaniel Pond | Reservoir | 6 | Sussex | 38 51 26 N | 075 24 15 W |
| Clendaniel Pond Dam | Dam | 6 | Sussex | 38 51 26 N | 075 24 15 W |
| Clermont | Populated Place | 90 | New Castle | 39 47 20 N | 075 31 38 W |
| Cliffs Station | Locale | 61 | New Castle | 39 46 36 N | 075 31 02 W |
| Clifton Park | Park | 17 | New Castle | 39 45 37 N | 075 30 58 W |
| Clifton Park Manor | Populated Place | 27 | New Castle | 39 45 30 N | 075 30 44 W |
| Club House Landing | Populated Place | -10 | Sussex | 38 33 45 N | 075 05 27 W |
| Coach Hill | Populated Place | 77 | New Castle | 39 42 42 N | 075 42 19 W |
| Cobbs-Gauger Park | Park | 21 | New Castle | 39 39 24 N | 075 43 34 W |
| Cocked Hat | Populated Place | 15 | Sussex | 38 46 00 N | 075 36 39 W |
| Cod Creek | Stream | | Sussex | 38 33 22 N | 075 41 39 W |
| Cods Hammocks (historical) | Island | 1 | Sussex | 38 51 43 N | 075 15 59 W |
| Coffee Run | Populated Place | 67 | New Castle | 39 45 05 N | 075 39 29 W |
| Cohee Prong | Stream | | Kent | 39 03 11 N | 075 40 26 W |
| Cokesbury Cemetery | Cemetery | 10 | Sussex | 38 41 36 N | 075 28 47 W |
| Cokesbury United Methodist Church | Church | 10 | Sussex | 38 41 31 N | 075 28 49 W |
| Cokesbury Village | Populated Place | 100 | New Castle | 39 46 30 N | 075 39 29 W |
| Coldwell Corners | Locale | 21 | New Castle | 39 22 00 N | 075 45 54 W |
| College Park | Populated Place | 36 | New Castle | 39 40 25 N | 075 46 09 W |
| Collins and Culver Ditch | Canal | 6 | Sussex | 38 33 01 N | 075 36 42 W |
| Collins and Russell Development | Populated Place | 11 | Sussex | 38 47 15 N | 075 19 23 W |
| Collins Beach | Populated Place | 1 | New Castle | 39 23 07 N | 075 31 19 W |
| Collins Creek | Stream | | Sussex | 38 34 56 N | 075 06 27 W |
| Collins Creek Estates | Populated Place | 3 | Sussex | 38 33 40 N | 075 07 16 W |
| Collins Island | Island | 1 | Kent | 39 16 34 N | 075 28 29 W |
| Collins Mill Park | Populated Place | 9 | Sussex | 38 42 33 N | 075 31 26 W |
| Collins Park | Populated Place | 9 | New Castle | 39 41 10 N | 075 33 23 W |
| Collins Park Mobile Home Park | Populated Place | 4 | Sussex | 38 33 18 N | 075 05 11 W |
| Collins Pond | Reservoir | 9 | Sussex | 38 42 30 N | 075 31 17 W |
| Collins Pond Acres | Populated Place | 10 | Sussex | 38 42 38 N | 075 30 49 W |
| Collins Pond Dam | Dam | 9 | Sussex | 38 42 30 N | 075 31 17 W |
| Colmar Manor | Populated Place | 14 | Kent | 39 17 00 N | 075 36 34 W |
| Colonial Acres | Populated Place | 12 | Sussex | 38 36 24 N | 075 33 42 W |
| Colonial East Mobile Home Park | Populated Place | 9 | Sussex | 38 44 07 N | 075 08 12 W |
| Colonial Heights | Populated Place | 40 | New Castle | 39 44 50 N | 075 35 04 W |
| Colonial Village Apartments | Populated Place | 12 | New Castle | 39 41 05 N | 075 34 07 W |
| Colonial Woods (subdivision) | Populated Place | 110 | New Castle | 39 48 28 N | 075 32 29 W |
| Colony Hills | Populated Place | 4 | New Castle | 39 42 40 N | 075 36 34 W |
| Columbia | Populated Place | 13 | Sussex | 38 29 52 N | 075 40 40 W |
| Colwyck Elementary School | School | 10 | New Castle | 39 41 11 N | 075 33 29 W |
| Colwyck Junior High School | School | 10 | New Castle | 39 41 23 N | 075 33 31 W |
| Commodore Macdonogh Elementary School | School | 11 | New Castle | 39 33 28 N | 075 39 13 W |
| Community Church | Church | 2 | Sussex | 38 35 55 N | 075 10 36 W |
| Community Church | Church | 3 | Sussex | 38 35 57 N | 075 10 34 W |
| Community Holy Tabernacle of Deliverance | Church | 12 | Kent | 39 09 50 N | 075 32 04 W |
| Community Pentecostal Church of God | Church | 14 | Kent | 38 54 57 N | 075 30 60 W |
| Community Presbyterian Church | Church | 9 | New Castle | 39 42 50 N | 075 33 04 W |
| Compton Park | Park | 9 | New Castle | 39 44 23 N | 075 32 44 W |
| Conch Bar | Bar | -1 | Kent | 38 58 04 N | 075 18 37 W |
| Conch Point | Cape | -3 | Sussex | 38 28 16 N | 075 04 21 W |
| Concord | Populated Place | 42 | New Castle | 39 45 51 N | 075 32 34 W |
| Concord | Populated Place | 8 | Sussex | 38 38 31 N | 075 33 19 W |
| Concord Christian Academy | School | 77 | New Castle | 39 48 55 N | 075 29 24 W |
| Concord Heights | Populated Place | 9 | Sussex | 38 39 11 N | 075 32 28 W |
| Concord High School | School | 132 | New Castle | 39 49 50 N | 075 31 29 W |
| Concord Hills | Populated Place | 122 | New Castle | 39 50 02 N | 075 32 44 W |