Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| White Marsh School | School | 15 | Talbot | 38 40 05 N | 076 04 06 W |
| Wilke Farms | Locale | 18 | Talbot | 38 50 21 N | 076 01 54 W |
| William Hill Manor Retirement Home | Building | 12 | Talbot | 38 45 38 N | 076 04 03 W |
| Williams Creek | Stream | | Talbot | 38 45 15 N | 076 00 04 W |
| Williamsburg | Populated Place | 15 | Talbot | 38 43 21 N | 076 04 07 W |
| Williamsburg (historical) | Populated Place | 18 | Talbot | 38 49 50 N | 076 00 28 W |
| Williamsburg United Methodist Church | Church | 14 | Talbot | 38 43 17 N | 076 04 14 W |
| Windy Hill Cemetery | Cemetery | 3 | Talbot | 38 40 58 N | 075 58 44 W |
| Windyhill | Populated Place | 5 | Talbot | 38 40 53 N | 075 58 39 W |
| Wittman | Populated Place | 3 | Talbot | 38 47 37 N | 076 17 39 W |
| Wittman Park | Park | 3 | Talbot | 38 47 34 N | 076 17 46 W |
| Wittman Post Office | Post Office | 3 | Talbot | 38 47 37 N | 076 17 40 W |
| Wittman School | School | 3 | Talbot | 38 47 03 N | 076 18 54 W |
| Wittman School (historical) | School | 3 | Talbot | 38 47 02 N | 076 18 55 W |
| Woodland | Populated Place | 18 | Talbot | 38 50 22 N | 076 01 32 W |
| Woodland (subdivision) | Populated Place | 5 | Talbot | 38 45 33 N | 076 05 08 W |
| Woodland Creek | Bay | -3 | Talbot | 38 50 20 N | 076 11 06 W |
| Woodland Farms | Populated Place | 4 | Talbot | 38 45 45 N | 076 05 44 W |
| Woodlawn Memorial Park | Cemetery | 12 | Talbot | 38 51 40 N | 076 03 34 W |
| Wootenaux Creek | Stream | | Talbot | 38 47 32 N | 076 01 23 W |
| Wrights Cemetery | Cemetery | 5 | Talbot | 38 40 18 N | 076 01 38 W |
| Wye East River | Stream | | Talbot | 38 51 43 N | 076 11 26 W |
| Wye Heights | Populated Place | 6 | Talbot | 38 52 51 N | 076 05 56 W |
| Wye Mill | Building | 2 | Talbot | 38 56 31 N | 076 04 50 W |
| Wye Mills | Populated Place | 4 | Talbot | 38 56 28 N | 076 04 50 W |
| Wye Mills Cemetery | Cemetery | 12 | Talbot | 38 56 12 N | 076 04 47 W |
| Wye Mills Post Office | Post Office | 6 | Talbot | 38 56 28 N | 076 04 53 W |
| Wye Oak State Park | Park | 13 | Talbot | 38 56 21 N | 076 04 51 W |
| Wye River | Stream | | Talbot | 38 50 53 N | 076 12 14 W |
| Wyetown Point | Cape | 2 | Talbot | 38 50 43 N | 076 11 51 W |
| Yorke (historical) | Populated Place | 11 | Talbot | 38 53 14 N | 076 04 29 W |
| A M Powell State Fish Hatchery | Locale | 166 | Washington | 39 35 32 N | 077 38 15 W |
| Abe Mills Mountain | Summit | 409 | Washington | 39 40 12 N | 077 58 12 W |
| Airport Industrial Park | Locale | 213 | Washington | 39 42 51 N | 077 43 16 W |
| Ames Shopping Center | Locale | 156 | Washington | 39 38 09 N | 077 42 33 W |
| Annapolis Rock | Summit | 538 | Washington | 39 33 39 N | 077 35 59 W |
| Antietam | Populated Place | 94 | Washington | 39 24 58 N | 077 44 32 W |
| Antietam Church of God | Church | 127 | Washington | 39 25 21 N | 077 44 37 W |
| Antietam Creek | Stream | | Washington | 39 25 02 N | 077 44 44 W |
| Antietam Creek Aqueduct | Bridge | 85 | Washington | 39 25 02 N | 077 44 46 W |
| Antietam Creek Campground | Locale | 88 | Washington | 39 25 05 N | 077 44 44 W |
| Antietam Dargan Community Park | Park | 166 | Washington | 39 22 37 N | 077 43 56 W |
| Antietam Farmettes | Populated Place | 139 | Washington | 39 31 25 N | 077 42 42 W |
| Antietam Heights | Populated Place | 127 | Washington | 39 28 35 N | 077 41 42 W |
| Antietam Iron Works (historical) | Locale | 90 | Washington | 39 25 00 N | 077 44 27 W |
| Antietam Manor | Populated Place | 150 | Washington | 39 31 45 N | 077 44 43 W |
| Antietam National Battlefield | Park | 146 | Washington | 39 28 15 N | 077 44 15 W |
| Antietam National Cemetery | Cemetery | 153 | Washington | 39 27 33 N | 077 44 29 W |
| Antietam Overlook | Populated Place | 156 | Washington | 39 31 17 N | 077 41 54 W |
| Antietam Professional Center | Building | 164 | Washington | 39 38 21 N | 077 43 03 W |
| Antietam School | School | 164 | Washington | 39 38 20 N | 077 43 01 W |
| Antietam Station | Locale | 143 | Washington | 39 27 06 N | 077 46 08 W |
| Appalachian National Scenic Trail | Trail | 349 | Washington | 39 20 44 N | 077 40 15 W |
| Appletown | Populated Place | 177 | Washington | 39 28 50 N | 077 38 51 W |
| Arboranda Estates | Populated Place | 144 | Washington | 39 41 00 N | 077 47 19 W |
| Asbury United Methodist Church | Church | 169 | Washington | 39 38 44 N | 077 43 16 W |
| Ashton | Populated Place | 135 | Washington | 39 37 48 N | 077 54 54 W |
| Augusta | Populated Place | 144 | Washington | 39 22 04 N | 077 40 29 W |
| Bagtown | Populated Place | 209 | Washington | 39 34 54 N | 077 36 38 W |
| Bakersville | Populated Place | 129 | Washington | 39 30 53 N | 077 45 27 W |
| Balls Road | Locale | 152 | Washington | 39 35 09 N | 077 43 25 W |
| Baltimore and Ohio Railroad Covered Bridge | Bridge | 73 | Washington | 39 19 27 N | 077 43 43 W |
| Barth Spring | Spring | 304 | Washington | 39 39 18 N | 077 33 20 W |
| Bear Creek | Stream | 188 | Washington | 39 42 00 N | 078 19 02 W |
| Bear Pond Hollow | Valley | | Washington | 39 41 21 N | 077 58 11 W |
| Bear Pond Mountains | Range | 563 | Washington | 39 42 54 N | 077 58 01 W |
| Beards Graveyard | Cemetery | 188 | Washington | 39 39 16 N | 077 37 16 W |
| Beautiful View Cemetery | Cemetery | 226 | Washington | 39 43 08 N | 077 43 22 W |
| Beaver Creek | Populated Place | 158 | Washington | 39 35 02 N | 077 38 31 W |
| Beaver Creek | Stream | | Washington | 39 32 04 N | 077 42 33 W |
| Beaver Creek Country Club | Locale | 171 | Washington | 39 34 38 N | 077 38 27 W |
| Beaver Creek Estates | Populated Place | 170 | Washington | 39 36 20 N | 077 37 12 W |
| Beaverbrook | Populated Place | 201 | Washington | 39 38 20 N | 077 36 10 W |
| Beelers Summit | Locale | 212 | Washington | 39 24 45 N | 077 40 12 W |
| Benevola | Populated Place | 137 | Washington | 39 32 44 N | 077 40 34 W |
| Benevola United Methodist Church | Church | 145 | Washington | 39 32 43 N | 077 40 30 W |
| Bent Willow Farm | Locale | 214 | Washington | 39 25 12 N | 077 39 24 W |
| Bethel Cemetery | Cemetery | 189 | Washington | 39 22 23 N | 077 43 17 W |
| Bethel Church of God | Church | 156 | Washington | 39 41 23 N | 077 48 47 W |
| Bethel Graveyard | Cemetery | 185 | Washington | 39 38 37 N | 077 38 31 W |
| Bethel Graveyard | Cemetery | 156 | Washington | 39 41 23 N | 077 48 48 W |
| Bethel United Methodist Church | Church | 195 | Washington | 39 38 37 N | 077 38 17 W |
| Bethel United Methodist Church | Church | 182 | Washington | 39 22 26 N | 077 43 16 W |
| Bethel United Methodist Church | Church | 194 | Washington | 39 25 57 N | 077 39 44 W |
| Big Pool | Lake | 119 | Washington | 39 36 57 N | 078 00 47 W |
| Big Pool | Populated Place | 131 | Washington | 39 37 25 N | 078 00 57 W |
| Big Pool Post Office | Post Office | 131 | Washington | 39 37 27 N | 078 01 00 W |
| Big Spring | Populated Place | 130 | Washington | 39 37 45 N | 077 56 22 W |
| Big Spring | Spring | 126 | Washington | 39 37 46 N | 077 56 20 W |
| Big Woods Campground | Locale | 97 | Washington | 39 29 35 N | 077 47 31 W |
| Black Oak Ridge | Ridge | 280 | Washington | 39 45 06 N | 078 14 14 W |
| Black Rock | Summit | 549 | Washington | 39 34 22 N | 077 35 47 W |
| Black Rock Creek | Stream | | Washington | 39 34 59 N | 077 38 41 W |
| Blackfords Ferry (historical) | Crossing | 85 | Washington | 39 26 10 N | 077 48 05 W |
| Blair Valley | Valley | 242 | Washington | 39 43 11 N | 077 56 21 W |
| Blairs Valley Dam | Dam | 213 | Washington | 39 41 42 N | 077 56 29 W |
| Blairs Valley Lake | Reservoir | 213 | Washington | 39 41 42 N | 077 56 29 W |
| Bloody Lane | Locale | 141 | Washington | 39 28 13 N | 077 44 19 W |
| Blue Hill | Populated Place | 162 | Washington | 39 41 53 N | 078 11 37 W |
| Blue Mountain | Populated Place | 286 | Washington | 39 42 21 N | 077 31 46 W |
| Blue Mountain School (historical) | School | 288 | Washington | 39 42 39 N | 077 31 37 W |
| Blueberry Heights | Populated Place | 266 | Washington | 39 38 42 N | 077 34 11 W |
| Bluegrass Estates | Populated Place | 184 | Washington | 39 41 58 N | 077 37 05 W |
| Bnai Abraham Cemetery | Cemetery | 179 | Washington | 39 37 08 N | 077 45 43 W |
| Boonsboro | Populated Place | 166 | Washington | 39 30 22 N | 077 39 09 W |
| Boonsboro Ambulance and Rescue, Company 69 | Building | | Washington | 39 52 41 N | 078 06 25 W |
| Boonsboro Cemetery | Cemetery | 173 | Washington | 39 30 12 N | 077 39 12 W |
| Boonsboro Elementary School | School | 172 | Washington | 39 30 47 N | 077 39 14 W |
| Boonsboro Free Library | Building | 167 | Washington | 39 30 24 N | 077 39 08 W |
| Boonsboro High School | School | 180 | Washington | 39 30 58 N | 077 39 06 W |