Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Nanticoke Acres | Populated Place | 7 | Sussex | 38 38 22 N | 075 35 05 W |
| Nanticoke Acres Annex | Locale | 7 | Sussex | 38 38 24 N | 075 34 50 W |
| Nanticoke Estates | Populated Place | 6 | Sussex | 38 37 23 N | 075 37 14 W |
| Nanticoke Farms | Populated Place | 79 | New Castle | 39 46 37 N | 075 36 23 W |
| Nanticoke Hundred | Civil | 12 | Sussex | 38 42 30 N | 075 30 29 W |
| Nanticoke Indian Center | Building | 6 | Sussex | 38 36 25 N | 075 12 45 W |
| Nanticoke Indian Center | Locale | 6 | Sussex | 38 36 25 N | 075 12 44 W |
| Nanticoke Memorial Hospital | Hospital | 5 | Sussex | 38 38 29 N | 075 36 16 W |
| Nanticoke Park Wildlife Area | Park | 6 | Sussex | 38 33 30 N | 075 39 29 W |
| Nanticoke School | School | 6 | Sussex | 38 36 21 N | 075 12 40 W |
| Nanticoke Shores Mobile Home Park | Populated Place | 2 | Sussex | 38 37 48 N | 075 08 21 W |
| Narrow Ditch | Stream | | Sussex | 38 36 54 N | 075 20 14 W |
| Nassau | Populated Place | 8 | Sussex | 38 45 07 N | 075 11 16 W |
| Nassau Park Mobile Home Park | Populated Place | 8 | Sussex | 38 44 59 N | 075 11 24 W |
| Nassau School | School | 8 | Sussex | 38 44 50 N | 075 10 38 W |
| Nats Cove | Bay | -3 | Sussex | 38 38 04 N | 075 06 32 W |
| Nats Marsh | Swamp | 1 | Sussex | 38 37 57 N | 075 06 36 W |
| Naylors Corners | Locale | 18 | New Castle | 39 23 40 N | 075 38 32 W |
| Needhams Island | Island | 0 | Kent | 39 14 28 N | 075 27 45 W |
| Negro Island | Island | 1 | Sussex | 38 51 31 N | 075 15 19 W |
| Nellie Hughes Stokes Elementary School | School | 14 | Kent | 39 06 52 N | 075 32 57 W |
| Nemours Dam | Dam | 70 | New Castle | 39 46 58 N | 075 34 02 W |
| Nemours Pond | Reservoir | 70 | New Castle | 39 46 58 N | 075 34 02 W |
| Nentego Manor | Populated Place | 13 | Sussex | 38 30 55 N | 075 21 38 W |
| New Bridge | Locale | 70 | New Castle | 39 45 54 N | 075 34 55 W |
| New Castle | Populated Place | 3 | New Castle | 39 39 43 N | 075 33 59 W |
| New Castle County | Civil | 68 | New Castle | 39 47 30 N | 075 37 59 W |
| New Castle County Detention Center | Building | 48 | New Castle | 39 45 03 N | 075 36 45 W |
| New Castle Flats | Bar | -3 | New Castle | 39 40 30 N | 075 32 09 W |
| New Castle Hundred | Civil | 10 | New Castle | 39 38 00 N | 075 36 59 W |
| New Castle Industrial Park | Populated Place | 5 | New Castle | 39 42 15 N | 075 32 09 W |
| New Castle Junior High School | School | 5 | New Castle | 39 39 52 N | 075 34 13 W |
| New Castle Methodist Church | Church | 4 | New Castle | 39 39 42 N | 075 33 59 W |
| New Castle Presbyterian Church | Church | 7 | New Castle | 39 39 36 N | 075 33 49 W |
| New Castle Range | Channel | -8 | New Castle | 39 35 00 N | 075 33 39 W |
| New Castle Reservoir | Reservoir | 24 | New Castle | 39 40 47 N | 075 35 21 W |
| New Ditch | Stream | | Sussex | 38 41 02 N | 075 26 27 W |
| New Holy Trinity Church of God in Christ | Church | 5 | Sussex | 38 34 57 N | 075 16 36 W |
| New Hope Baptist Church | Church | 3 | New Castle | 39 44 37 N | 075 32 05 W |
| New Hope Church | Church | 21 | Kent | 39 10 04 N | 075 40 51 W |
| New Jerusalem Baptist Cemetery | Cemetery | 10 | Kent | 39 09 28 N | 075 31 49 W |
| New Jerusalem Baptist Church | Church | 10 | Kent | 39 10 26 N | 075 31 16 W |
| New Jerusalem Baptist Church | Church | 10 | Kent | 39 09 28 N | 075 31 51 W |
| New London Avenue School | School | 45 | New Castle | 39 41 22 N | 075 45 40 W |
| New Market | Populated Place | 15 | Sussex | 38 48 26 N | 075 23 49 W |
| New Market Cemetery | Cemetery | 14 | Sussex | 38 48 23 N | 075 23 53 W |
| New Market Village Mobile Home Park | Populated Place | 13 | Sussex | 38 48 35 N | 075 23 14 W |
| New Mount Olive Baptist Church | Church | 17 | New Castle | 39 44 55 N | 075 32 44 W |
| New Shiloh F B H Church of God | Church | 15 | Sussex | 38 47 41 N | 075 25 46 W |
| New St Johns Church | Church | 9 | Sussex | 38 37 44 N | 075 16 53 W |
| New Wharf | Locale | 1 | Kent | 38 56 13 N | 075 24 12 W |
| New Zion United Methodist Church | Church | 6 | Sussex | 38 33 23 N | 075 34 48 W |
| Newark | Populated Place | 38 | New Castle | 39 41 01 N | 075 44 59 W |
| Newark Christian and Missionary Alliance Church | Church | 24 | New Castle | 39 39 46 N | 075 43 29 W |
| Newark Country Club | Locale | 59 | New Castle | 39 41 25 N | 075 45 59 W |
| Newark High School | School | 33 | New Castle | 39 40 50 N | 075 44 19 W |
| Newark Oaks | Populated Place | 21 | New Castle | 39 40 46 N | 075 43 01 W |
| Newark Revival Tabernacle | Church | 28 | New Castle | 39 39 56 N | 075 42 59 W |
| Newark Shopping Center | Locale | 31 | New Castle | 39 41 05 N | 075 43 44 W |
| Newark Union Church | Church | 80 | New Castle | 39 47 09 N | 075 30 50 W |
| Newell Branch | Stream | | Kent | 39 05 55 N | 075 31 41 W |
| Newkirk Estates (subdivision) | Populated Place | 17 | New Castle | 39 41 50 N | 075 41 55 W |
| Newport | Populated Place | 10 | New Castle | 39 42 49 N | 075 36 34 W |
| Newport Heights | Populated Place | 11 | New Castle | 39 42 50 N | 075 36 14 W |
| Newport Marsh | Swamp | 1 | New Castle | 39 42 50 N | 075 35 34 W |
| Newton Woods | Populated Place | 12 | Sussex | 38 46 01 N | 075 35 34 W |
| Newtons Acres | Populated Place | 2 | Sussex | 38 35 08 N | 075 04 33 W |
| No Mans Friend Reach | Channel | 1 | Sussex | 38 48 25 N | 075 13 11 W |
| Noah Pond | Lake | 1 | Sussex | 38 49 34 N | 075 16 48 W |
| Nonatum Mills | Populated Place | 24 | New Castle | 39 41 23 N | 075 45 14 W |
| Nonesuch Creek | Stream | | New Castle | 39 41 31 N | 075 37 14 W |
| Norman G Wilder Wildlife Area | Park | 18 | Kent | 39 02 10 N | 075 37 37 W |
| Normandy Manor | Populated Place | 80 | New Castle | 39 47 12 N | 075 30 51 W |
| North Baptist Church | Church | 110 | New Castle | 39 48 28 N | 075 32 09 W |
| North Fork Green Run | Stream | | Sussex | 38 26 13 N | 075 21 10 W |
| North Hills | Populated Place | 61 | New Castle | 39 46 20 N | 075 30 37 W |
| North Jetty Light | Locale | -4 | Sussex | 38 47 40 N | 075 09 26 W |
| North Laurel Elementary School | School | 9 | Sussex | 38 33 52 N | 075 34 04 W |
| North Milford (historical) | Populated Place | 6 | Kent | 38 55 02 N | 075 25 42 W |
| North Minister | Populated Place | 98 | New Castle | 39 49 49 N | 075 30 11 W |
| North Murderkill Hundred | Civil | 12 | Kent | 39 05 00 N | 075 33 59 W |
| North Prong | Stream | | Sussex | 38 49 24 N | 075 18 59 W |
| North Seaford Heights | Populated Place | 8 | Sussex | 38 39 18 N | 075 36 14 W |
| North Shores | Populated Place | 9 | Kent | 38 54 55 N | 075 26 52 W |
| North Shores | Populated Place | 1 | Sussex | 38 44 10 N | 075 05 04 W |
| North Shores | Populated Place | 5 | Sussex | 38 39 12 N | 075 34 59 W |
| North Shores Addition | Populated Place | 6 | Sussex | 38 39 29 N | 075 34 38 W |
| North South Canal | Canal | 0 | Kent | 39 14 14 N | 075 25 51 W |
| North Star | Populated Place | 106 | New Castle | 39 45 40 N | 075 43 09 W |
| North Star Addition | Populated Place | 75 | New Castle | 39 45 30 N | 075 42 49 W |
| Northcrest | Populated Place | 113 | New Castle | 39 49 50 N | 075 29 45 W |
| Northeast Church of Christ | Church | 6 | New Castle | 39 44 49 N | 075 31 39 W |
| Northhurst (subdivision) | Populated Place | 7 | New Castle | 39 46 25 N | 075 29 04 W |
| Northminster Park | Park | 107 | New Castle | 39 49 50 N | 075 30 37 W |
| Northshire | Populated Place | 92 | New Castle | 39 49 05 N | 075 30 09 W |
| Northside Church of God | Church | 21 | New Castle | 39 45 21 N | 075 31 54 W |
| Northwest Fork Hundred | Civil | 16 | Sussex | 38 47 00 N | 075 37 59 W |
| Northwood | Populated Place | 79 | New Castle | 39 47 45 N | 075 30 09 W |
| Nottingham Green | Populated Place | 36 | New Castle | 39 41 10 N | 075 46 42 W |
| Nottingham Manor | Populated Place | 58 | New Castle | 39 41 05 N | 075 45 59 W |
| Noxontown (historical) | Locale | 14 | New Castle | 39 26 00 N | 075 42 29 W |
| Noxontown Lake | Reservoir | 14 | New Castle | 39 26 00 N | 075 42 29 W |
| Oak Acres | Populated Place | 3 | Sussex | 38 29 40 N | 075 06 43 W |
| Oak Drive | Populated Place | 8 | Sussex | 38 35 25 N | 075 18 19 W |
| Oak Forest Estates | Populated Place | 22 | Kent | 39 11 03 N | 075 42 12 W |
| Oak Forest Mobile Home Park | Populated Place | 5 | Sussex | 38 37 46 N | 075 10 19 W |
| Oak Grove | Populated Place | 4 | Kent | 39 09 23 N | 075 29 22 W |
| Oak Grove | Populated Place | 13 | Sussex | 38 39 39 N | 075 42 23 W |
| Oak Grove School | School | 30 | New Castle | 39 44 27 N | 075 36 08 W |
| Oak Hill | Island | 1 | Sussex | 38 51 48 N | 075 16 33 W |