Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Ridgewood Mobile Home Park | Populated Place | 50 | Anne Arundel | 39 09 55 N | 076 42 44 W |
| Sacred Heart Cemetery | Cemetery | 50 | Charles | 38 31 17 N | 076 58 39 W |
| Saint Francis De Sales Church | Church | 50 | Harford | 39 27 53 N | 076 17 06 W |
| Saint Marys Church | Church | 50 | St. Mary's | 38 28 25 N | 076 46 02 W |
| Saint Marys Star of the Sea School | School | 50 | Charles | 38 37 09 N | 077 05 17 W |
| Saint Matthews Hall | School | 50 | Prince George's | 38 57 39 N | 076 45 55 W |
| Saint Matthews United Church of Christ | Church | 50 | Baltimore (city) | 39 19 38 N | 076 34 45 W |
| Saint Michaels Church | Church | 50 | Prince George's | 38 59 58 N | 076 58 57 W |
| Saint Paul Street Branch Enoch Pratt Free Library | Building | 50 | Baltimore (city) | 39 19 05 N | 076 36 54 W |
| Saint Pauls Church | Church | 50 | Calvert | 38 32 14 N | 076 35 09 W |
| Sandy Level Estates | Populated Place | 50 | Charles | 38 33 52 N | 076 48 59 W |
| Seabrook Shopping Center | Locale | 50 | Prince George's | 38 58 23 N | 076 50 46 W |
| Severn Woods | Populated Place | 50 | Anne Arundel | 39 08 16 N | 076 42 02 W |
| Shrine of the Little Flower Roman Catholic Church | Church | 50 | Baltimore (city) | 39 19 25 N | 076 34 18 W |
| Shrine of the Little Flower School | School | 50 | Baltimore (city) | 39 19 26 N | 076 34 18 W |
| Southern Maryland Public Works Camp | Locale | 50 | Charles | 38 30 34 N | 076 49 05 W |
| Spring Hill (historical) | Populated Place | 50 | Charles | 38 29 29 N | 076 59 09 W |
| Spring Oak Estates | Populated Place | 50 | Charles | 38 30 03 N | 076 57 56 W |
| Sunderland | Populated Place | 50 | Calvert | 38 40 16 N | 076 35 53 W |
| Sunderland Post Office | Post Office | 50 | Calvert | 38 39 46 N | 076 36 28 W |
| Sycamore Island | Island | 50 | Montgomery | 39 02 30 N | 077 16 24 W |
| Sycamore Ridge | Populated Place | 50 | Calvert | 38 41 50 N | 076 35 39 W |
| The Cedars | Populated Place | 50 | Harford | 39 28 58 N | 076 17 48 W |
| Tick Tock Plaza Shopping Center | Locale | 50 | Prince George's | 38 59 05 N | 076 58 48 W |
| Tremper Farm | Populated Place | 50 | Baltimore | 39 23 23 N | 076 27 17 W |
| Trenton Place | Populated Place | 50 | Charles | 38 27 12 N | 076 49 11 W |
| Trinity Cemetery | Cemetery | 50 | Charles | 38 26 59 N | 076 51 53 W |
| Twin Oaks | Populated Place | 50 | Anne Arundel | 39 12 39 N | 076 39 18 W |
| Veterans Trade School | School | 50 | Baltimore (city) | 39 19 21 N | 076 36 06 W |
| West Creek Village | Populated Place | 50 | Cecil | 39 39 40 N | 075 48 11 W |
| White Marsh School | School | 50 | St. Mary's | 38 28 00 N | 076 46 21 W |
| Woodmore | Populated Place | 50 | Prince George's | 38 55 16 N | 076 48 11 W |
| Zekiah Swamp | Swamp | 50 | Charles | 38 31 28 N | 076 57 12 W |
| Aberdeen High School | School | 49 | Harford | 39 30 58 N | 076 10 17 W |
| Aberdeen Swim Club | Locale | 49 | Harford | 39 32 10 N | 076 09 57 W |
| Addison Road-Seat Pleasant Metro Station | Locale | 49 | Prince George's | 38 53 11 N | 076 53 50 W |
| All Faith Cemetery | Cemetery | 49 | St. Mary's | 38 28 02 N | 076 43 49 W |
| All Faith Episcopal Church | Church | 49 | St. Mary's | 38 28 03 N | 076 43 50 W |
| Aquasco Post Office | Post Office | 49 | Prince George's | 38 34 51 N | 076 43 28 W |
| Arbor Greene | Populated Place | 49 | Calvert | 38 41 28 N | 076 37 52 W |
| Arbutus Memorial Park Cemetery | Cemetery | 49 | Baltimore | 39 14 41 N | 076 42 25 W |
| Ardwick | Populated Place | 49 | Prince George's | 38 56 44 N | 076 52 51 W |
| Arena Plaza Shopping Center | Locale | 49 | Prince George's | 38 54 57 N | 076 51 30 W |
| Ascension Cemetery | Cemetery | 49 | Prince George's | 39 00 23 N | 076 47 11 W |
| Barstow Post Office | Post Office | 49 | Calvert | 38 31 40 N | 076 36 52 W |
| Bell Branch Road Seventh Day Adventist Church | Church | 49 | Anne Arundel | 38 58 57 N | 076 39 25 W |
| Bentwoods | Populated Place | 49 | Anne Arundel | 39 10 50 N | 076 42 44 W |
| Berea Seventh Day Adventist Church | Church | 49 | Baltimore (city) | 39 18 29 N | 076 37 58 W |
| Beverly Estates | Populated Place | 49 | St. Mary's | 38 24 28 N | 076 46 19 W |
| Birch Hanger | Populated Place | 49 | St. Mary's | 38 24 40 N | 076 46 02 W |
| Booker T Washington Middle School | School | 49 | Baltimore (city) | 39 18 11 N | 076 37 40 W |
| Bowlings Alley | Locale | 49 | Charles | 38 26 26 N | 076 55 06 W |
| Brighton Woods | Populated Place | 49 | Calvert | 38 39 02 N | 076 36 12 W |
| Brightview Woods | Populated Place | 49 | Anne Arundel | 39 06 52 N | 076 37 01 W |
| Brightwood | Populated Place | 49 | Anne Arundel | 39 06 34 N | 076 36 49 W |
| Brooklyn Park High School | School | 49 | Anne Arundel | 39 12 57 N | 076 37 12 W |
| Carroll | Populated Place | 49 | Baltimore (city) | 39 16 51 N | 076 40 19 W |
| Central High School | School | 49 | Prince George's | 38 52 56 N | 076 53 27 W |
| Charlotte Hall Post Office | Post Office | 49 | St. Mary's | 38 29 18 N | 076 46 24 W |
| Charlotte Hall Shopping Center | Locale | 49 | St. Mary's | 38 29 20 N | 076 46 24 W |
| Christ Church | Church | 49 | Calvert | 38 29 39 N | 076 32 10 W |
| Christ Church Cemetery | Cemetery | 49 | Calvert | 38 29 38 N | 076 32 11 W |
| Christ Church of the Deaf | Church | 49 | Baltimore (city) | 39 19 01 N | 076 36 29 W |
| Christian Brothers Institute Cemetery | Cemetery | 49 | Prince George's | 39 03 10 N | 076 54 12 W |
| Church of God | Church | 49 | Baltimore (city) | 39 18 48 N | 076 34 02 W |
| Church of God | Church | 49 | Baltimore (city) | 39 17 32 N | 076 38 37 W |
| Clarks Run (subdivision) | Populated Place | 49 | Charles | 38 31 09 N | 076 57 19 W |
| Community College at Calvert County | School | 49 | Calvert | 38 29 29 N | 076 32 16 W |
| Cornerstone Assembly of God Church | Church | 49 | Prince George's | 38 59 00 N | 076 43 34 W |
| District 20 (Lanham) Election District | Civil | 49 | Prince George's | 38 57 30 N | 076 51 36 W |
| District 3 (Sunderland) Election District | Civil | 49 | Calvert | 38 40 40 N | 076 35 46 W |
| District 4 Assessment District | Civil | 49 | Anne Arundel | 39 05 30 N | 076 43 24 W |
| Emmanuel Baptist Church | Church | 49 | Calvert | 38 36 51 N | 076 36 50 W |
| Evangel Assembly of God Church | Church | 49 | Harford | 39 32 09 N | 076 10 03 W |
| Forest Heights | Populated Place | 49 | Prince George's | 38 48 34 N | 076 59 53 W |
| Foxhill School | School | 49 | Prince George's | 38 57 41 N | 076 44 28 W |
| Friendship Cemetery | Cemetery | 49 | Anne Arundel | 39 10 13 N | 076 40 24 W |
| Gapgalleon | Populated Place | 49 | Anne Arundel | 39 12 45 N | 076 39 29 W |
| Glendale Heights | Populated Place | 49 | Prince George's | 38 58 29 N | 076 49 00 W |
| Grace Brethren Church | Church | 49 | Prince George's | 38 58 43 N | 076 51 40 W |
| Guilford Manor | Populated Place | 49 | Anne Arundel | 39 13 02 N | 076 36 35 W |
| Hammonds Lane Nursing Home | Hospital | 49 | Anne Arundel | 39 12 44 N | 076 37 37 W |
| Heather Woods | Populated Place | 49 | Anne Arundel | 38 59 13 N | 076 39 37 W |
| Highland Estates | Populated Place | 49 | Charles | 38 30 20 N | 077 00 22 W |
| Holland Hills Park Church | Church | 49 | Baltimore | 39 20 01 N | 076 31 22 W |
| Huntingtown | Populated Place | 49 | Calvert | 38 36 57 N | 076 36 47 W |
| Immaculate Conception Catholic Church | Church | 49 | St. Mary's | 38 26 33 N | 076 44 51 W |
| Independence Village | Populated Place | 49 | Charles | 38 30 13 N | 076 48 11 W |
| Jackson | Populated Place | 49 | Cecil | 39 34 57 N | 076 02 31 W |
| John Wesley Cemetery | Cemetery | 49 | St. Mary's | 38 23 17 N | 076 49 50 W |
| John Wesley Church | Church | 49 | St. Mary's | 38 23 17 N | 076 49 50 W |
| Joseph Harrison Lockerman Public School (historical) | School | 49 | Baltimore (city) | 39 17 30 N | 076 38 38 W |
| Joy Haven | Populated Place | 49 | Cecil | 39 30 39 N | 075 57 09 W |
| Kagle Tract Recreation Center | Park | 49 | Prince George's | 38 56 07 N | 076 49 39 W |
| Kenwood | Populated Place | 49 | Baltimore | 39 20 26 N | 076 30 20 W |
| Kings Acres | Populated Place | 49 | Calvert | 38 39 09 N | 076 32 27 W |
| Kingston Heights | Populated Place | 49 | Anne Arundel | 39 12 26 N | 076 39 41 W |
| La Plata Shopping Center | Locale | 49 | Charles | 38 31 46 N | 076 59 05 W |
| Lafayette Square Multi-Service Center | Building | 49 | Baltimore (city) | 39 17 56 N | 076 38 33 W |
| Lahaina | Populated Place | 49 | Prince George's | 38 46 00 N | 076 44 34 W |
| Lakewood Estates | Populated Place | 49 | Calvert | 38 44 09 N | 076 38 59 W |
| Linhigh | Populated Place | 49 | Baltimore | 39 21 29 N | 076 30 49 W |
| Linthicum Elementary School | School | 49 | Anne Arundel | 39 12 08 N | 076 39 10 W |
| Mary Harris Mother Jones Elementary School | School | 49 | Prince George's | 39 00 04 N | 076 57 59 W |
| Maryland Airport | Airport | 49 | Charles | 38 36 01 N | 077 04 24 W |
| Maryland City Park | Park | 49 | Anne Arundel | 39 05 05 N | 076 49 10 W |
| Meade Village Park | Park | 49 | Anne Arundel | 39 07 32 N | 076 42 31 W |
| Meadedale | Populated Place | 49 | Anne Arundel | 39 05 43 N | 076 43 01 W |
| Mellwood Pond Community Park | Park | 49 | Prince George's | 38 48 02 N | 076 49 30 W |
| Melvale | Populated Place | 49 | Baltimore (city) | 39 20 45 N | 076 38 59 W |