Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Willowdale Farms | Locale | 125 | Frederick | 39 41 59 N | 077 15 44 W |
| Willowdale Park | Park | 102 | Frederick | 39 25 24 N | 077 26 56 W |
| Willowtree Plaza Shopping Center | Locale | 110 | Frederick | 39 25 12 N | 077 27 07 W |
| Wilmar Farms | Locale | 241 | Frederick | 39 27 32 N | 077 31 10 W |
| Wilson Avenue Station (historical) | Locale | 93 | Frederick | 39 25 36 N | 077 25 51 W |
| Windsor Estates | Populated Place | 130 | Frederick | 39 21 04 N | 077 28 22 W |
| Windsor Knolls Middle School | School | 166 | Frederick | 39 19 17 N | 077 16 42 W |
| Windy Hill | Populated Place | 98 | Frederick | 39 23 52 N | 077 22 48 W |
| Wingate (subdivision) | Populated Place | 105 | Frederick | 39 24 38 N | 077 25 60 W |
| Winpenny Tell | Populated Place | 164 | Frederick | 39 28 22 N | 077 26 59 W |
| Winter Run | Populated Place | 169 | Frederick | 39 25 53 N | 077 28 22 W |
| Winter Springs | Populated Place | 139 | Frederick | 39 27 55 N | 077 15 03 W |
| Winterborn | Populated Place | 196 | Frederick | 39 24 50 N | 077 29 35 W |
| Wistmans Delight | Populated Place | 294 | Frederick | 39 30 54 N | 077 31 54 W |
| Wivell Estates | Populated Place | 180 | Frederick | 39 40 08 N | 077 22 23 W |
| WJTM-FM (Frederick) | Tower | 300 | Frederick | 39 25 05 N | 077 30 02 W |
| WMTB-FM (Emmitsburg) | Tower | 241 | Frederick | 39 41 02 N | 077 21 24 W |
| WMTB-FM (Emmitsburg) | Tower | 199 | Frederick | 39 40 55 N | 077 21 14 W |
| Wolf Den Spring | Populated Place | 208 | Frederick | 39 20 26 N | 077 13 49 W |
| Wolf Rock | Pillar | 426 | Frederick | 39 38 02 N | 077 26 16 W |
| Wolfe | Populated Place | 351 | Frederick | 39 31 50 N | 077 31 14 W |
| Wolfes Overlook | Populated Place | 237 | Frederick | 39 31 14 N | 077 33 12 W |
| Wolfs Den | Populated Place | 170 | Frederick | 39 34 24 N | 077 15 49 W |
| Wolfsville | Populated Place | 314 | Frederick | 39 34 27 N | 077 33 02 W |
| Wolfsville Cemetery | Cemetery | 344 | Frederick | 39 34 40 N | 077 32 46 W |
| Wolfsville Crossing | Populated Place | 316 | Frederick | 39 31 58 N | 077 35 42 W |
| Wolfsville Elementary School | School | 321 | Frederick | 39 34 29 N | 077 33 12 W |
| Wolfsville Fire Company Number 1 | Building | | Frederick | 39 54 24 N | 077 41 55 W |
| Wolfsville Fire Company Number 21 | Building | | Frederick | 39 57 31 N | 077 55 09 W |
| Wolfsville Puritan Park East | Park | 320 | Frederick | 39 34 55 N | 077 32 58 W |
| Wolfsville Reformed Cemetery | Cemetery | 323 | Frederick | 39 34 37 N | 077 33 23 W |
| Wolfsville Reformed Church | Church | 322 | Frederick | 39 34 37 N | 077 33 22 W |
| Wood Run | Stream | | Frederick | 39 22 37 N | 077 16 59 W |
| Woodcrest | Populated Place | 220 | Frederick | 39 27 06 N | 077 36 02 W |
| Wooded Acres | Populated Place | 222 | Frederick | 39 28 35 N | 077 28 05 W |
| Woodland Heights | Populated Place | 134 | Frederick | 39 41 26 N | 077 17 07 W |
| Woodland Way | Populated Place | 222 | Frederick | 39 32 10 N | 077 34 39 W |
| Woodlawn Village (subdivision) | Populated Place | 115 | Frederick | 39 25 23 N | 077 27 41 W |
| Woodridge | Populated Place | 144 | Frederick | 39 25 21 N | 077 19 42 W |
| Woods | Populated Place | 174 | Frederick | 39 28 58 N | 077 27 46 W |
| Woodsboro | Populated Place | 121 | Frederick | 39 31 59 N | 077 18 53 W |
| Woodsboro Elementary School | School | 116 | Frederick | 39 32 01 N | 077 18 46 W |
| Woodsboro Fire Company Number 16 | Building | | Frederick | 39 53 47 N | 077 31 25 W |
| Woodsboro Industrial Park | Locale | 120 | Frederick | 39 31 35 N | 077 18 23 W |
| Woodsboro Medical Center | Hospital | 119 | Frederick | 39 32 17 N | 077 18 49 W |
| Woodsboro Park | Park | 134 | Frederick | 39 31 52 N | 077 18 14 W |
| Woodsboro Post Office | Post Office | 123 | Frederick | 39 32 08 N | 077 18 54 W |
| Woodspring | Populated Place | 165 | Frederick | 39 23 30 N | 077 15 24 W |
| Woodsworth Estates | Populated Place | 172 | Frederick | 39 23 20 N | 077 17 49 W |
| Woodville | Populated Place | 166 | Frederick | 39 24 36 N | 077 10 40 W |
| Woodville Branch | Stream | | Frederick | 39 26 02 N | 077 12 06 W |
| Woodville Meadows | Populated Place | 158 | Frederick | 39 24 36 N | 077 10 43 W |
| Woodville Terrace | Populated Place | 229 | Frederick | 39 23 23 N | 077 11 25 W |
| Workmans Mill (subdivision) | Populated Place | 84 | Frederick | 39 26 32 N | 077 23 58 W |
| WQSI-AM (Frederick) | Tower | 134 | Frederick | 39 24 42 N | 077 28 19 W |
| WTHU-AM (Thurmont) | Tower | 159 | Frederick | 39 37 37 N | 077 24 10 W |
| WTRI-AM (Brunswick) | Tower | 129 | Frederick | 39 18 41 N | 077 36 25 W |
| Wye Creek | Populated Place | 127 | Frederick | 39 22 53 N | 077 29 14 W |
| WZYQ-FM (Braddock Heights) | Tower | 466 | Frederick | 39 27 50 N | 077 29 43 W |
| Yeager | Populated Place | 160 | Frederick | 39 23 50 N | 077 18 16 W |
| Yellow Springs | Populated Place | 182 | Frederick | 39 28 46 N | 077 27 36 W |
| Yellow Springs Elementary School | School | 131 | Frederick | 39 27 01 N | 077 27 16 W |
| Yingling Cemetery | Cemetery | 126 | Frederick | 39 16 47 N | 077 25 09 W |
| Ziegler Estates | Populated Place | 142 | Frederick | 39 31 32 N | 077 25 44 W |
| Zion Cemetery | Cemetery | 171 | Frederick | 39 26 45 N | 077 32 45 W |
| Zion Cemetery | Cemetery | 124 | Frederick | 39 29 13 N | 077 25 49 W |
| Zion Cemetery | Cemetery | 137 | Frederick | 39 19 33 N | 077 21 19 W |
| Zion Episcopal Church | Church | 137 | Frederick | 39 19 33 N | 077 21 19 W |
| Zion Lutheran Church | Church | 166 | Frederick | 39 26 39 N | 077 32 49 W |
| Zion Reformed Church of Charlesville | Church | 125 | Frederick | 39 29 14 N | 077 25 50 W |
| Aaron Run | Stream | | Garrett | 39 29 11 N | 079 04 57 W |
| Accident | Populated Place | 727 | Garrett | 39 37 43 N | 079 19 11 W |
| Accident Elementary School | School | 724 | Garrett | 39 37 38 N | 079 19 15 W |
| Accident Evangelical Lutheran Church | Church | 733 | Garrett | 39 37 51 N | 079 19 05 W |
| Accident Volunteer Fire Department | Building | 724 | Garrett | 39 37 40 N | 079 19 09 W |
| Alexander Run | Stream | | Garrett | 39 39 22 N | 079 12 13 W |
| Allegheny Heights | Summit | 972 | Garrett | 39 19 58 N | 079 22 45 W |
| Altamont | Populated Place | 802 | Garrett | 39 25 39 N | 079 16 55 W |
| Ambrose Run | Stream | | Garrett | 39 20 46 N | 079 25 56 W |
| Aronhalt Fork | Stream | | Garrett | 39 16 53 N | 079 23 30 W |
| Ashby Cemetery | Cemetery | 791 | Garrett | 39 22 39 N | 079 28 29 W |
| Asher Glade | Populated Place | 597 | Garrett | 39 42 14 N | 079 26 50 W |
| Asher Glade Cemetery | Cemetery | 590 | Garrett | 39 42 17 N | 079 26 39 W |
| Asher Glade Church of the Brethren | Church | 591 | Garrett | 39 42 15 N | 079 26 54 W |
| Asher Glade School (historical) | School | 591 | Garrett | 39 42 16 N | 079 26 52 W |
| Avilton | Populated Place | 807 | Garrett | 39 39 01 N | 079 02 32 W |
| Avilton School | School | 749 | Garrett | 39 38 36 N | 079 02 25 W |
| Bald Knob | Summit | 795 | Garrett | 39 39 42 N | 079 16 25 W |
| Barnard Cemetery | Cemetery | 764 | Garrett | 39 29 06 N | 079 08 45 W |
| Barton Debris Basin | Reservoir | 486 | Garrett | 39 32 30 N | 079 01 59 W |
| Barton Debris Basin Dam | Dam | 486 | Garrett | 39 32 30 N | 079 01 59 W |
| Barton Reservation | Reserve | 475 | Garrett | 39 32 27 N | 079 01 53 W |
| Beachy School | School | 825 | Garrett | 39 34 41 N | 079 16 24 W |
| Beall School | School | 735 | Garrett | 39 40 16 N | 078 59 27 W |
| Bear Creek | Stream | | Garrett | 39 40 13 N | 079 24 04 W |
| Bear Creek Fish Rearing Station | Locale | 653 | Garrett | 39 38 46 N | 079 17 05 W |
| Bear Hill | Summit | 833 | Garrett | 39 36 06 N | 079 02 36 W |
| Bear Hill School | School | 736 | Garrett | 39 37 03 N | 079 11 36 W |
| Bear Pen Run | Stream | | Garrett | 39 33 43 N | 079 06 37 W |
| Beaver Hill | Summit | 789 | Garrett | 39 32 16 N | 079 10 44 W |
| Beckman Cemetery | Cemetery | 808 | Garrett | 39 19 46 N | 079 23 59 W |
| Beckman Cemetery | Cemetery | 804 | Garrett | 39 26 06 N | 079 17 05 W |
| Beckman Point | Cape | 765 | Garrett | 39 29 51 N | 079 17 28 W |
| Bee Tree Hollow | Valley | | Garrett | 39 30 24 N | 079 21 36 W |
| Berrett (historical) | Populated Place | 708 | Garrett | 39 17 07 N | 079 21 04 W |
| Bethel | Populated Place | 509 | Garrett | 39 26 42 N | 079 07 07 W |
| Bethel United Methodist Church | Church | 758 | Garrett | 39 24 01 N | 079 22 54 W |
| Bethlehem Church | Church | 789 | Garrett | 39 22 07 N | 079 17 49 W |
| Bethlehem School | School | 816 | Garrett | 39 22 13 N | 079 17 09 W |
| Bevansville | Populated Place | 772 | Garrett | 39 39 15 N | 079 11 34 W |