Feature Name | Class | Elev.
meters | County | Latitude
DMS | Longitude
DMS |
| Severna Park Post Office | Post Office | 18 | Anne Arundel | 39 04 43 N | 076 32 52 W |
| Shady Side Post Office | Post Office | 3 | Anne Arundel | 38 50 24 N | 076 30 57 W |
| Sharpsburg Post Office | Post Office | 128 | Washington | 39 27 35 N | 077 44 49 W |
| Sharptown Post Office | Post Office | 6 | Wicomico | 38 32 24 N | 075 43 07 W |
| Sherwood Forest Post Office | Post Office | 26 | Anne Arundel | 39 01 33 N | 076 32 50 W |
| Sherwood Post Office | Post Office | 3 | Talbot | 38 45 42 N | 076 19 15 W |
| Showell Post Office | Post Office | 7 | Worcester | 38 23 57 N | 075 12 39 W |
| Silver Spring Finance Post Office | Post Office | 94 | Montgomery | 38 59 40 N | 077 01 54 W |
| Silver Spring Post Office | Post Office | 102 | Montgomery | 38 59 51 N | 077 02 06 W |
| Simpsonville Post Office | Post Office | 103 | Howard | 39 11 06 N | 076 52 15 W |
| Smithsburg Post Office | Post Office | 242 | Washington | 39 39 23 N | 077 34 09 W |
| Snow Hill Post Office | Post Office | 2 | Worcester | 38 10 42 N | 075 23 38 W |
| Solomons Post Office | Post Office | 3 | Calvert | 38 20 08 N | 076 27 57 W |
| South Station Baltimore Post Office | Post Office | 4 | Baltimore (city) | 39 16 30 N | 076 37 07 W |
| Southeast Station Baltimore Post Office | Post Office | 29 | Baltimore (city) | 39 17 16 N | 076 34 10 W |
| Sparrows Point Post Office | Post Office | 5 | Baltimore | 39 14 10 N | 076 26 29 W |
| Spring Gap Post Office | Post Office | 183 | Allegany | 39 33 52 N | 078 42 45 W |
| Springfield Hospital Center Post Office | Post Office | 147 | Carroll | 39 22 57 N | 076 57 21 W |
| Stevenson Post Office | Post Office | 104 | Baltimore | 39 24 39 N | 076 42 48 W |
| Stevensville Post Office | Post Office | 2 | Queen Anne's | 38 58 33 N | 076 18 44 W |
| Still Pond Post Office | Post Office | 20 | Kent | 39 19 41 N | 076 02 43 W |
| Stockton Post Office | Post Office | 9 | Worcester | 38 03 12 N | 075 24 38 W |
| Street Post Office | Post Office | 158 | Harford | 39 40 08 N | 076 22 40 W |
| Sudlersville Post Office | Post Office | 21 | Queen Anne's | 39 11 08 N | 075 51 30 W |
| Sunderland Post Office | Post Office | 50 | Calvert | 38 39 46 N | 076 36 28 W |
| Swanton Post Office | Post Office | 720 | Garrett | 39 27 34 N | 079 14 03 W |
| Sykesville Post Office | Post Office | 147 | Carroll | 39 22 08 N | 076 57 54 W |
| Takoma Park Post Office | Post Office | 87 | Montgomery | 38 58 32 N | 077 00 50 W |
| Tall Timbers Post Office | Post Office | 0 | St. Mary's | 38 09 53 N | 076 32 05 W |
| Taneytown Post Office | Post Office | 156 | Carroll | 39 39 32 N | 077 10 25 W |
| Taylors Island Post Office | Post Office | 0 | Dorchester | 38 28 11 N | 076 17 52 W |
| Temple Hills Post Office | Post Office | 85 | Prince George's | 38 49 24 N | 076 56 54 W |
| Templeville Post Office | Post Office | 20 | Queen Anne's | 39 08 21 N | 075 46 01 W |
| Three Notch Post Office (historical) | Post Office | 32 | St. Mary's | 38 11 52 N | 076 23 40 W |
| Thurmont Post Office | Post Office | 152 | Frederick | 39 37 17 N | 077 24 40 W |
| Tilghman Post Office | Post Office | 3 | Talbot | 38 42 37 N | 076 20 19 W |
| Toddville Post Office | Post Office | 0 | Dorchester | 38 17 13 N | 076 03 33 W |
| Tolchester Beach Post Office (historical) | Post Office | -6 | Kent | 39 12 51 N | 076 14 41 W |
| Tolson Post Office (historical) | Post Office | 0 | St. Mary's | 38 08 16 N | 076 31 38 W |
| Towson Post Office | Post Office | 140 | Baltimore | 39 23 58 N | 076 36 21 W |
| Tracys Landing Post Office | Post Office | 38 | Anne Arundel | 38 46 58 N | 076 35 44 W |
| Trappe Post Office | Post Office | 16 | Talbot | 38 39 29 N | 076 03 29 W |
| Tuscarora Post Office | Post Office | 92 | Frederick | 39 15 24 N | 077 28 10 W |
| Twinbrook Post Office | Post Office | 83 | Montgomery | 39 05 28 N | 077 07 00 W |
| Tyaskin Post Office | Post Office | 2 | Wicomico | 38 19 33 N | 075 52 30 W |
| Tylerton Post Office | Post Office | -2 | Somerset | 37 57 52 N | 076 01 26 W |
| Union Bridge Post Office | Post Office | 131 | Carroll | 39 34 02 N | 077 10 47 W |
| Uniontown Post Office | Post Office | 197 | Carroll | 39 35 37 N | 077 06 55 W |
| Unionville Post Office | Post Office | 137 | Frederick | 39 28 30 N | 077 11 10 W |
| Upper Fairmount Post Office | Post Office | 1 | Somerset | 38 06 24 N | 075 47 52 W |
| Upper Falls Post Office | Post Office | 73 | Baltimore | 39 26 15 N | 076 24 15 W |
| Upper Marlboro Post Office | Post Office | 12 | Prince George's | 38 49 02 N | 076 45 06 W |
| Upperco Post Office | Post Office | 248 | Baltimore | 39 33 49 N | 076 50 11 W |
| Valley Lee Post Office | Post Office | 9 | St. Mary's | 38 11 36 N | 076 30 52 W |
| Vienna Post Office | Post Office | 3 | Dorchester | 38 29 02 N | 075 49 42 W |
| Walbrook Station Baltimore Post Office | Post Office | 85 | Baltimore (city) | 39 18 34 N | 076 40 18 W |
| Waldorf Post Office | Post Office | 61 | Charles | 38 36 59 N | 076 54 10 W |
| Walkersville Post Office | Post Office | 98 | Frederick | 39 28 59 N | 077 20 53 W |
| Warwick Post Office | Post Office | 21 | Cecil | 39 25 02 N | 075 46 41 W |
| Washington Grove Post Office | Post Office | 158 | Montgomery | 39 08 20 N | 077 10 47 W |
| Waverly Station Baltimore Post Office | Post Office | 55 | Baltimore (city) | 39 19 24 N | 076 36 04 W |
| Welcome Post Office | Post Office | 42 | Charles | 38 28 58 N | 077 05 54 W |
| Wenona Post Office | Post Office | 1 | Somerset | 38 07 48 N | 075 57 04 W |
| West Beach Post Office (historical) | Post Office | 2 | Calvert | 38 41 42 N | 076 32 01 W |
| West Bethesda Post Office | Post Office | 80 | Montgomery | 39 00 45 N | 077 09 35 W |
| West Bowie Station Bowie Post Office | Post Office | 49 | Prince George's | 39 00 30 N | 076 46 49 W |
| West Friendship Post Office | Post Office | 149 | Howard | 39 18 18 N | 076 57 19 W |
| West Ocean City Post Office (historical) | Post Office | 2 | Worcester | 38 19 53 N | 075 06 25 W |
| West River Post Office | Post Office | 40 | Anne Arundel | 38 51 25 N | 076 35 14 W |
| Westernport Post Office | Post Office | 279 | Allegany | 39 29 06 N | 079 02 41 W |
| Westminster Post Office | Post Office | 240 | Carroll | 39 34 23 N | 076 59 37 W |
| Westover Post Office | Post Office | 3 | Somerset | 38 07 07 N | 075 42 32 W |
| Whaleyville Post Office | Post Office | 9 | Worcester | 38 23 49 N | 075 18 10 W |
| Wheaton Post Office | Post Office | 131 | Montgomery | 39 02 32 N | 077 02 52 W |
| White Hall Post Office | Post Office | 108 | Baltimore | 39 37 19 N | 076 37 45 W |
| White Marsh Post Office | Post Office | 12 | Baltimore | 39 22 57 N | 076 25 47 W |
| White Plains Post Office | Post Office | 60 | Charles | 38 34 57 N | 076 57 02 W |
| Whiteford Post Office | Post Office | 162 | Harford | 39 42 35 N | 076 20 45 W |
| Whitehaven Post Office | Post Office | 0 | Wicomico | 38 16 08 N | 075 47 19 W |
| Willards Post Office | Post Office | 11 | Wicomico | 38 23 43 N | 075 20 58 W |
| Williamsburg Post Office | Post Office | 12 | Dorchester | 38 39 27 N | 075 49 44 W |
| Williamsport Post Office | Post Office | 122 | Washington | 39 35 55 N | 077 49 21 W |
| Wingate Post Office | Post Office | 0 | Dorchester | 38 18 19 N | 076 06 20 W |
| Wingate Post Office (historical) | Post Office | 0 | Dorchester | 38 18 19 N | 076 06 20 W |
| Wittman Post Office | Post Office | 3 | Talbot | 38 47 37 N | 076 17 40 W |
| Woodbine Post Office | Post Office | 193 | Carroll | 39 21 54 N | 077 03 30 W |
| Woodlawn Post Office (historical) | Post Office | 146 | Cecil | 39 38 10 N | 076 04 22 W |
| Woodmoor Post Office | Post Office | 104 | Montgomery | 39 01 13 N | 077 00 53 W |
| Woodsboro Post Office | Post Office | 123 | Frederick | 39 32 08 N | 077 18 54 W |
| Woodstock Post Office | Post Office | 129 | Howard | 39 19 26 N | 076 52 39 W |
| Woolford Post Office | Post Office | 0 | Dorchester | 38 30 13 N | 076 10 42 W |
| Worton Post Office | Post Office | 23 | Kent | 39 16 26 N | 076 05 32 W |
| Wye Mills Post Office | Post Office | 6 | Talbot | 38 56 28 N | 076 04 53 W |
| Wynne Post Office (historical) | Post Office | 0 | St. Mary's | 38 06 37 N | 076 24 16 W |
| Zion Post Office (historical) | Post Office | 118 | Cecil | 39 40 32 N | 075 57 56 W |
| Bare Hills | Range | 128 | Baltimore | 39 22 42 N | 076 40 23 W |
| Bear Pond Mountains | Range | 563 | Washington | 39 42 54 N | 077 58 01 W |
| Pine Hills | Range | 134 | Washington | 39 38 28 N | 077 51 48 W |
| South Mountain | Range | 453 | Washington | 39 10 00 N | 078 39 59 W |
| Town Hill | Range | 467 | Allegany | 39 43 29 N | 078 22 44 W |
| Calico Rapids | Rapids | 16 | Montgomery | 38 58 25 N | 077 12 34 W |
| Oak Shoals | Rapids | 713 | Garrett | 39 27 32 N | 079 25 19 W |
| White Horse Rapids | Rapids | 73 | Washington | 39 19 20 N | 077 43 09 W |
| Barton Reservation | Reserve | 475 | Garrett | 39 32 27 N | 079 01 53 W |
| Linkwood State Wildlife Management Area | Reserve | 7 | Dorchester | 38 32 23 N | 075 55 32 W |
| 18 Reservoir | Reservoir | 36 | Anne Arundel | 39 04 54 N | 076 43 59 W |
| Adkins Pond | Reservoir | 8 | Wicomico | 38 19 58 N | 075 22 31 W |
| Allen Pond | Reservoir | 36 | Prince George's | 38 55 57 N | 076 44 32 W |
| Alter Pond | Reservoir | 33 | Prince George's | 39 00 48 N | 076 51 04 W |
| Anderson Mill Pond | Reservoir | 2 | Wicomico | 38 21 20 N | 075 40 27 W |
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