Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Cunninghill Cove | Populated Place | 6 | Baltimore | 39 21 55 N | 076 21 39 W |
| Dairy Manor Farms | Populated Place | 145 | Baltimore | 39 38 56 N | 076 40 22 W |
| Damiels Dam | Dam | 75 | Baltimore | 39 18 54 N | 076 49 11 W |
| Daniels | Populated Place | 76 | Baltimore | 39 19 00 N | 076 48 59 W |
| Danville Square Shopping Center | Locale | 12 | Baltimore | 39 16 39 N | 076 30 11 W |
| Dar | Populated Place | 248 | Baltimore | 39 41 40 N | 076 42 01 W |
| Darinton (historical) | Populated Place | 3 | Baltimore | 39 12 22 N | 076 29 29 W |
| Dark Head Creek | Stream | | Baltimore | 39 19 01 N | 076 25 21 W |
| Darleigh Manor | Populated Place | 42 | Baltimore | 39 23 40 N | 076 28 20 W |
| Darryl Gardens | Populated Place | 45 | Baltimore | 39 24 36 N | 076 24 20 W |
| Daybreak Estates | Populated Place | 34 | Baltimore | 39 20 36 N | 076 31 08 W |
| Days Cove | Bay | -2 | Baltimore | 39 23 42 N | 076 22 07 W |
| Days Cove Pit | Mine | 4 | Baltimore | 39 23 49 N | 076 23 21 W |
| Days Island | Island | 0 | Baltimore | 39 23 58 N | 076 21 48 W |
| Dead Run | Stream | | Baltimore | 39 18 19 N | 076 41 09 W |
| Dead Run Park | Park | 97 | Baltimore | 39 18 45 N | 076 43 29 W |
| Deadman Run | Stream | | Baltimore | 39 30 34 N | 076 44 57 W |
| Deep Creek | Stream | | Baltimore | 39 17 34 N | 076 27 45 W |
| Deep Creek Middle School | School | 6 | Baltimore | 39 17 37 N | 076 27 09 W |
| Deep Creek Park | Park | 3 | Baltimore | 39 18 18 N | 076 27 05 W |
| Deep Creek School | School | 4 | Baltimore | 39 18 32 N | 076 27 13 W |
| Deep Run | Stream | | Baltimore | 39 24 52 N | 076 40 14 W |
| Deer Cross | Populated Place | 201 | Baltimore | 39 25 50 N | 076 51 23 W |
| Deer Park | Populated Place | 194 | Baltimore | 39 23 56 N | 076 49 48 W |
| Deer Park Church | Church | 201 | Baltimore | 39 25 47 N | 076 51 37 W |
| Deer Park Elementary School | School | 177 | Baltimore | 39 23 17 N | 076 49 12 W |
| Deer Park Middle School | School | 184 | Baltimore | 39 23 22 N | 076 49 04 W |
| Deer Park Plaza Shopping Center | Locale | 182 | Baltimore | 39 22 59 N | 076 49 30 W |
| Deer Run | Populated Place | 157 | Baltimore | 39 26 00 N | 076 39 46 W |
| Deer Woods | Populated Place | 70 | Baltimore | 39 26 20 N | 076 31 36 W |
| Defense Heights | Populated Place | 23 | Baltimore | 39 17 52 N | 076 30 49 W |
| Delaware Run | Stream | | Baltimore | 39 30 07 N | 076 45 44 W |
| Delight | Populated Place | 201 | Baltimore | 39 26 26 N | 076 48 22 W |
| Delight Meadows | Populated Place | 193 | Baltimore | 39 25 30 N | 076 49 38 W |
| Dembeigh Hill | Populated Place | 101 | Baltimore | 39 22 31 N | 076 38 34 W |
| Devonshire Forest | Populated Place | 120 | Baltimore | 39 24 55 N | 076 37 03 W |
| Diamond Point Plaza Shopping Center | Locale | | Baltimore | 39 18 00 N | 076 29 50 W |
| Diamond Ridge Golf Course | Locale | 152 | Baltimore | 39 19 46 N | 076 46 25 W |
| Dick Branch | Stream | | Baltimore | 39 29 09 N | 076 25 39 W |
| Dipping Pond Run | Stream | | Baltimore | 39 24 50 N | 076 41 08 W |
| District 1 Election District | Civil | 153 | Baltimore | 39 16 47 N | 076 44 41 W |
| District 10 Election District | Civil | 175 | Baltimore | 39 32 35 N | 076 34 58 W |
| District 11 Election District | Civil | 42 | Baltimore | 39 26 16 N | 076 27 44 W |
| District 12 Election District | Civil | 6 | Baltimore | 39 15 30 N | 076 30 33 W |
| District 13 Election District | Civil | 51 | Baltimore | 39 14 24 N | 076 40 35 W |
| District 14 Election District | Civil | 26 | Baltimore | 39 21 18 N | 076 30 06 W |
| District 15 Election District | Civil | 8 | Baltimore | 39 16 32 N | 076 24 08 W |
| District 2 Election District | Civil | 161 | Baltimore | 39 21 51 N | 076 48 57 W |
| District 3 Election District | Civil | 162 | Baltimore | 39 23 48 N | 076 43 02 W |
| District 4 Election District | Civil | 185 | Baltimore | 39 28 31 N | 076 48 24 W |
| District 5 Election District | Civil | 188 | Baltimore | 39 35 15 N | 076 46 30 W |
| District 6 Election District | Civil | 226 | Baltimore | 39 40 47 N | 076 44 10 W |
| District 7 Election District | Civil | 148 | Baltimore | 39 39 02 N | 076 38 34 W |
| District 8 Election District | Civil | 100 | Baltimore | 39 29 09 N | 076 39 50 W |
| District 9 Election District | Civil | 117 | Baltimore | 39 24 07 N | 076 35 09 W |
| Dogwood Hills | Populated Place | 151 | Baltimore | 39 25 51 N | 076 33 22 W |
| Dogwood Run | Stream | | Baltimore | 39 19 00 N | 076 47 34 W |
| Doncaster Village | Populated Place | 130 | Baltimore | 39 24 45 N | 076 31 39 W |
| Donney Brook Farms | Populated Place | 220 | Baltimore | 39 40 03 N | 076 46 39 W |
| Donnybrook | Populated Place | 137 | Baltimore | 39 23 32 N | 076 35 39 W |
| Dorsey College Center | Building | 132 | Baltimore | 39 24 32 N | 076 35 44 W |
| Dorsey College Center | Building | | Baltimore | 39 24 30 N | 076 35 45 W |
| Double Rock Park | Park | 61 | Baltimore | 39 22 05 N | 076 31 29 W |
| Dover | Populated Place | 118 | Baltimore | 39 30 44 N | 076 46 10 W |
| Dover Brook Golf Club | Locale | 202 | Baltimore | 39 27 46 N | 076 44 38 W |
| Dover Church | Church | 133 | Baltimore | 39 31 20 N | 076 46 08 W |
| Dowell Health Center | Hospital | 122 | Baltimore | 39 23 41 N | 076 36 24 W |
| Drexel Woods | Populated Place | 130 | Baltimore | 39 17 43 N | 076 46 09 W |
| Druid Ridge Cemetery | Cemetery | 164 | Baltimore | 39 22 56 N | 076 43 27 W |
| Drum Point | Cape | 0 | Baltimore | 39 14 56 N | 076 23 10 W |
| Duck Creek | Stream | | Baltimore | 39 17 40 N | 076 27 47 W |
| Duck Creek | Stream | | Baltimore | 39 23 06 N | 076 24 54 W |
| Dulaney Branch | Stream | | Baltimore | 39 27 52 N | 076 32 43 W |
| Dulaney Gate | Populated Place | 147 | Baltimore | 39 28 18 N | 076 35 54 W |
| Dulaney High School | School | 160 | Baltimore | 39 27 38 N | 076 36 44 W |
| Dulaney Hills | Populated Place | 146 | Baltimore | 39 28 49 N | 076 31 19 W |
| Dulaney House | Building | | Baltimore | 39 24 29 N | 076 35 34 W |
| Dulaney Plaza Shopping Center | Locale | 125 | Baltimore | 39 24 18 N | 076 36 10 W |
| Dulaney Spring Elementary School | School | 153 | Baltimore | 39 28 15 N | 076 36 18 W |
| Dulaney Valley | Valley | | Baltimore | 39 27 00 N | 076 33 24 W |
| Dulaney Valley (historical) | Populated Place | 72 | Baltimore | 39 27 40 N | 076 32 60 W |
| Dulaney Valley Estates | Populated Place | 162 | Baltimore | 39 30 05 N | 076 30 21 W |
| Dulaney Valley Memorial Gardens | Cemetery | 152 | Baltimore | 39 27 26 N | 076 37 04 W |
| Dulaney Village | Populated Place | 114 | Baltimore | 39 24 56 N | 076 36 18 W |
| Dumbarton | Populated Place | 147 | Baltimore | 39 22 44 N | 076 42 32 W |
| Dumbarton Middle School | School | 142 | Baltimore | 39 22 50 N | 076 36 39 W |
| Dun Rovin | Populated Place | 161 | Baltimore | 39 28 40 N | 076 37 32 W |
| Dunbar | Populated Place | 154 | Baltimore | 39 24 50 N | 076 46 19 W |
| Duncan Sisters Convent | Church | 91 | Baltimore | 39 16 03 N | 076 42 22 W |
| Dundalk | Populated Place | 5 | Baltimore | 39 15 02 N | 076 31 14 W |
| Dundalk Branch Baltimore County Public Library | Building | 12 | Baltimore | 39 15 28 N | 076 31 24 W |
| Dundalk Church | Church | 9 | Baltimore | 39 16 17 N | 076 29 39 W |
| Dundalk Church of God | Church | 6 | Baltimore | 39 15 54 N | 076 31 34 W |
| Dundalk Church of the Brethren | Church | 15 | Baltimore | 39 15 40 N | 076 30 59 W |
| Dundalk Fire Department Station 6 | Building | | Baltimore | 39 26 03 N | 076 51 22 W |
| Dundalk Free Methodist Church | Church | 18 | Baltimore | 39 16 30 N | 076 31 08 W |
| Dundalk Heritage Park | Park | 12 | Baltimore | 39 15 30 N | 076 31 14 W |
| Dundalk Middle School | School | 12 | Baltimore | 39 15 34 N | 076 30 50 W |
| Dundalk Mobile Home Court | Populated Place | 4 | Baltimore | 39 15 14 N | 076 30 05 W |
| Dundalk Park | Park | 12 | Baltimore | 39 15 32 N | 076 31 05 W |
| Dundalk Presbyterian Church | Church | 6 | Baltimore | 39 15 37 N | 076 30 33 W |
| Dundalk School | School | 12 | Baltimore | 39 15 32 N | 076 31 09 W |
| Dundalk Senior High School | School | 26 | Baltimore | 39 16 08 N | 076 30 57 W |
| Dundalk Seventh Day Adventist Church | Church | 9 | Baltimore | 39 15 31 N | 076 31 39 W |
| Dundalk United Methodist Church | Church | 11 | Baltimore | 39 15 19 N | 076 31 09 W |
| Dundalk Vocational School | School | 3 | Baltimore | 39 14 37 N | 076 30 29 W |
| Dundee Creek | Stream | | Baltimore | 39 20 13 N | 076 21 06 W |
| Dundee Natural Environment Area | Park | 6 | Baltimore | 39 21 31 N | 076 22 01 W |
| Dundee Village | Populated Place | 5 | Baltimore | 39 20 50 N | 076 22 58 W |
| Dykes Creek | Stream | | Baltimore | 39 39 59 N | 076 45 01 W |