Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Hillandale Volunteer Fire Department Fire Station 24 | Building | | Montgomery | 39 03 02 N | 077 38 34 W |
| Hillbrook | Populated Place | 37 | Baltimore | 39 19 46 N | 076 30 51 W |
| Hillcrest | Populated Place | 31 | Anne Arundel | 39 13 43 N | 076 36 34 W |
| Hillcrest | Populated Place | 94 | Cecil | 39 41 48 N | 075 47 49 W |
| Hillcrest Baptist Church | Church | 85 | Prince George's | 38 49 59 N | 076 57 40 W |
| Hillcrest Center Shopping Center | Locale | 134 | Frederick | 39 24 55 N | 077 26 43 W |
| Hillcrest Elementary School | School | 154 | Baltimore | 39 16 10 N | 076 44 52 W |
| Hillcrest Elementary School | School | 139 | Frederick | 39 24 40 N | 077 27 02 W |
| Hillcrest Heights | Populated Place | 114 | Howard | 39 09 07 N | 076 53 31 W |
| Hillcrest Heights | Populated Place | 85 | Prince George's | 38 49 58 N | 076 57 34 W |
| Hillcrest Heights Branch Library | Building | 87 | Prince George's | 38 50 06 N | 076 57 23 W |
| Hillcrest Heights Branch Prince George's County Memorial Library | Building | 85 | Prince George's | 38 50 04 N | 076 57 30 W |
| Hillcrest Heights Elementary School | School | 80 | Prince George's | 38 49 48 N | 076 57 34 W |
| Hillcrest Heights School | School | 86 | Prince George's | 38 50 18 N | 076 57 04 W |
| Hillcrest Manor (subdivision) | Populated Place | 56 | Harford | 39 31 23 N | 076 10 06 W |
| Hillcrest Memorial Cemetery | Cemetery | 24 | Anne Arundel | 38 58 30 N | 076 31 45 W |
| Hillcrest Memorial Park | Cemetery | 264 | Allegany | 39 40 35 N | 078 43 31 W |
| Hillcrest Orchard (subdivision) | Populated Place | 135 | Frederick | 39 24 44 N | 077 27 29 W |
| Hillcrest Park | Park | 41 | Baltimore | 39 14 42 N | 076 39 10 W |
| Hillcrest Park | Park | 139 | Frederick | 39 24 37 N | 077 27 16 W |
| Hillcrest Park | Park | 124 | Montgomery | 39 04 39 N | 077 07 56 W |
| Hillcrest Park | Park | 47 | Prince George's | 38 49 42 N | 076 58 13 W |
| Hillcroft Executive Park | Locale | 106 | Howard | 39 11 51 N | 076 51 09 W |
| Hillen Station | Locale | 7 | Baltimore (city) | 39 17 43 N | 076 36 29 W |
| Hillendale | Populated Place | 28 | Anne Arundel | 39 05 18 N | 076 37 12 W |
| Hillendale | Populated Place | 120 | Baltimore | 39 22 48 N | 076 34 11 W |
| Hillendale Country Club | Locale | 182 | Baltimore | 39 29 52 N | 076 33 01 W |
| Hillendale Elementary School | School | 108 | Baltimore | 39 22 36 N | 076 34 19 W |
| Hillendale Farms | Populated Place | 104 | Baltimore | 39 23 20 N | 076 33 19 W |
| Hillendale Fire Department Station 11 | Building | | Baltimore | 39 22 45 N | 076 34 50 W |
| Hillendale Golf Course | Locale | 171 | Baltimore | 39 30 03 N | 076 33 21 W |
| Hillendale Golf Course (historical) | Locale | 103 | Baltimore | 39 22 44 N | 076 34 36 W |
| Hillendale Heights | Populated Place | 183 | Baltimore | 39 30 41 N | 076 33 36 W |
| Hillendale Park | Populated Place | 119 | Baltimore | 39 23 01 N | 076 33 42 W |
| Hillendale Shopping Center | Locale | 113 | Baltimore | 39 23 00 N | 076 34 34 W |
| Hillmark | Populated Place | 82 | Frederick | 39 23 40 N | 077 23 02 W |
| Hillmead | Populated Place | 78 | Montgomery | 38 59 52 N | 077 07 38 W |
| Hillmeade | Populated Place | 42 | Prince George's | 38 58 38 N | 076 47 42 W |
| Hillmeade Lookout Tower | Tower | 67 | Prince George's | 38 58 15 N | 076 47 07 W |
| Hillmeade Manor | Populated Place | 47 | Prince George's | 38 59 04 N | 076 47 40 W |
| Hills Bridge | Bridge | 1 | Prince George's | 38 48 40 N | 076 42 42 W |
| Hills Cove | Bay | 0 | Kent | 39 09 50 N | 076 08 39 W |
| Hills Island | Island | -3 | Worcester | 38 25 20 N | 075 06 08 W |
| Hills Plaza Shopping Center | Locale | 206 | Allegany | 39 37 53 N | 078 45 01 W |
| Hills Point | Cape | 5 | Dorchester | 38 34 25 N | 076 18 19 W |
| Hills Point | Cape | 3 | Kent | 39 06 36 N | 076 12 47 W |
| Hills Point | Populated Place | 0 | Dorchester | 38 36 12 N | 076 14 13 W |
| Hills Point Cove | Bay | -3 | Dorchester | 38 33 57 N | 076 18 03 W |
| Hills Point Neck | Cape | 1 | Dorchester | 38 33 25 N | 076 16 32 W |
| Hills Trailer Park | Populated Place | 29 | St. Mary's | 38 14 40 N | 076 29 22 W |
| Hillsboro | Populated Place | 12 | Caroline | 38 55 00 N | 075 56 20 W |
| Hillsboro Estates | Populated Place | 13 | Caroline | 38 55 02 N | 075 55 58 W |
| Hillsboro Post Office | Post Office | 12 | Caroline | 38 55 00 N | 075 56 29 W |
| Hillsboro United Methodist Church | Church | 12 | Caroline | 38 55 00 N | 075 56 33 W |
| Hillsborough | Populated Place | 121 | Prince George's | 39 07 10 N | 076 53 46 W |
| Hillsdale | Populated Place | 261 | Carroll | 39 35 08 N | 076 54 50 W |
| Hillsdale Elementary School | School | 28 | Harford | 39 30 13 N | 076 10 48 W |
| Hillsdale Green | Populated Place | 102 | Baltimore (city) | 39 19 15 N | 076 42 24 W |
| Hillsdale Park and Golf Course | Locale | 105 | Baltimore (city) | 39 19 22 N | 076 42 14 W |
| Hillsdale-Chatsworth United Methodist Church | Church | 116 | Baltimore (city) | 39 18 37 N | 076 42 25 W |
| Hillside | Populated Place | 276 | Carroll | 39 35 22 N | 076 57 24 W |
| Hillside | Populated Place | 86 | Prince George's | 38 52 22 N | 076 55 27 W |
| Hillside (subdivision) | Populated Place | 22 | Harford | 39 30 07 N | 076 10 40 W |
| Hillside at Seminary | Populated Place | 113 | Baltimore | 39 25 41 N | 076 39 19 W |
| Hillside Business Park | Locale | | Anne Arundel | 39 10 22 N | 076 43 32 W |
| Hillside Chapel | Church | 112 | Baltimore (city) | 39 21 37 N | 076 36 17 W |
| Hillside Estates | Populated Place | 147 | Frederick | 39 23 05 N | 077 29 21 W |
| Hillside Hunt | Populated Place | 189 | Baltimore | 39 27 40 N | 076 40 44 W |
| Hillside Manor | Populated Place | 32 | Calvert | 38 29 29 N | 076 31 12 W |
| Hillside Park | Populated Place | 14 | Anne Arundel | 39 08 50 N | 076 31 45 W |
| Hillside School for Handicapped Children | School | 66 | Baltimore (city) | 39 19 41 N | 076 35 00 W |
| Hillsmere Elementary School | School | 7 | Anne Arundel | 38 56 27 N | 076 28 15 W |
| Hillsmere Estates | Populated Place | 6 | Anne Arundel | 38 55 51 N | 076 29 39 W |
| Hillsmere Shores | Populated Place | 6 | Anne Arundel | 38 56 24 N | 076 29 42 W |
| Hillstead | Populated Place | 137 | Baltimore | 39 24 27 N | 076 40 29 W |
| Hillton Run | Stream | | St. Mary's | 38 13 26 N | 076 27 42 W |
| Hilltop | Populated Place | 172 | Carroll | 39 23 01 N | 076 55 57 W |
| Hilltop | Populated Place | 104 | Howard | 39 16 22 N | 076 48 04 W |
| Hilltop Elementary School | School | 45 | Anne Arundel | 39 11 25 N | 076 38 06 W |
| Hilltop Shopping Center | Locale | 138 | Baltimore (city) | 39 20 50 N | 076 41 19 W |
| Hilltop Woods | Populated Place | 336 | Frederick | 39 26 55 N | 077 29 29 W |
| Hillview | Populated Place | 127 | Harford | 39 33 30 N | 076 18 21 W |
| Hillview Acres | Populated Place | 123 | Frederick | 39 18 52 N | 077 19 44 W |
| Hillview Estates | Populated Place | 98 | Cecil | 39 40 57 N | 075 55 39 W |
| Hillview Farms | Populated Place | 111 | Cecil | 39 38 10 N | 076 03 27 W |
| Hillville | Populated Place | 42 | St. Mary's | 38 22 21 N | 076 36 09 W |
| Hillwood | Populated Place | 59 | Charles | 38 34 40 N | 076 59 24 W |
| Hilton (historical) | Populated Place | 131 | Howard | 39 15 20 N | 076 49 12 W |
| Hilton Elementary School | School | 114 | Baltimore (city) | 39 19 07 N | 076 40 25 W |
| Hilton Place | Populated Place | 36 | Baltimore | 39 13 38 N | 076 41 56 W |
| Hilton Recreation Center | Park | 56 | Baltimore (city) | 39 17 19 N | 076 40 10 W |
| Hines Estates | Populated Place | 92 | Baltimore | 39 24 05 N | 076 29 32 W |
| Hines Pond Bog | Swamp | 2 | Anne Arundel | 39 09 07 N | 076 28 12 W |
| Hines Ponds | Lake | 0 | Anne Arundel | 39 09 06 N | 076 28 20 W |
| Hines Woods | Populated Place | 143 | Frederick | 39 22 52 N | 077 21 23 W |
| Hinkle Hollow | Valley | | Allegany | 39 40 45 N | 078 35 43 W |
| Hinkle Run | Stream | | Washington | 39 41 02 N | 077 58 26 W |
| Hipsleys Mill | Populated Place | 139 | Howard | 39 16 35 N | 077 06 18 W |
| His Light Fellowship Church | Church | 10 | Caroline | 38 41 16 N | 075 46 52 W |
| Hiss United Methodist Church | Church | 107 | Baltimore | 39 22 58 N | 076 32 08 W |
| Historical Society of Talbot County Museum | Building | 7 | Talbot | 38 46 27 N | 076 04 35 W |
| Hitchcock Tunnel | Tunnel | 628 | Garrett | 39 29 02 N | 079 10 54 W |
| Hitchins Administration Building | Building | 589 | Allegany | 39 38 59 N | 078 55 58 W |
| Hobbits Glen | Populated Place | 128 | Howard | 39 13 25 N | 076 54 03 W |
| Hobbits Glen Golf Course | Locale | 133 | Howard | 39 13 33 N | 076 54 06 W |
| Hobbs | Populated Place | 15 | Caroline | 38 51 41 N | 075 47 04 W |
| Hobo Jungle (historical) | Locale | 79 | Frederick | 39 19 29 N | 077 39 50 W |
| Hoby Wolf Airport | Airport | 167 | Carroll | 39 24 28 N | 076 55 39 W |
| Hock Business Park | Locale | | Anne Arundel | 39 12 36 N | 076 40 25 W |
| Hockley Branch | Stream | | Anne Arundel | 39 00 58 N | 076 32 40 W |