Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Finzel School (historical) | School | 787 | Garrett | 39 42 55 N | 078 56 36 W |
| Chub Run | Stream | | Garrett | 39 42 55 N | 079 20 42 W |
| Rock Springs | Populated Place | 155 | Cecil | 39 42 54 N | 076 09 31 W |
| Cherby-Maurlyn Estates | Populated Place | 162 | Harford | 39 42 54 N | 076 21 38 W |
| Glen Afton Spring | Spring | 364 | Washington | 39 42 54 N | 077 30 40 W |
| Mount Tabor Graveyard | Cemetery | 159 | Washington | 39 42 54 N | 077 50 41 W |
| Bear Pond Mountains | Range | 563 | Washington | 39 42 54 N | 077 58 01 W |
| Little Allegheny Mountain | Summit | 660 | Allegany | 39 42 54 N | 078 48 39 W |
| Mount Hope Church (historical) | Church | 135 | Cecil | 39 42 53 N | 076 02 32 W |
| Persimmon Island (historical) | Island | 30 | Cecil | 39 42 53 N | 076 13 46 W |
| Middletown Estates | Populated Place | 260 | Baltimore | 39 42 53 N | 076 45 19 W |
| Mount Tabor Evangelical Church | Church | 159 | Washington | 39 42 53 N | 077 50 40 W |
| Nottingham Fields | Populated Place | 125 | Cecil | 39 42 52 N | 076 03 52 W |
| Friends Creek | Populated Place | 201 | Frederick | 39 42 52 N | 077 24 12 W |
| Amorine Branch | Stream | | Allegany | 39 42 52 N | 078 32 09 W |
| Finzel | Populated Place | 775 | Garrett | 39 42 52 N | 078 56 43 W |
| Collier Run | Stream | | Garrett | 39 42 52 N | 079 23 04 W |
| Oak Grove | Populated Place | 112 | Cecil | 39 42 51 N | 076 05 06 W |
| Maryland Line | Populated Place | 257 | Baltimore | 39 42 51 N | 076 39 14 W |
| Linden Springs | Populated Place | 245 | Baltimore | 39 42 51 N | 076 43 03 W |
| Cascade School | School | 407 | Washington | 39 42 51 N | 077 29 30 W |
| Airport Industrial Park | Locale | 213 | Washington | 39 42 51 N | 077 43 16 W |
| Guard Post Office (historical) | Post Office | 439 | Garrett | 39 42 51 N | 079 23 21 W |
| Mill Run | Stream | | Garrett | 39 42 51 N | 079 23 02 W |
| Speelman Mills (historical) | Locale | 443 | Garrett | 39 42 51 N | 079 23 05 W |
| Oak Grove School (historical) | School | 112 | Cecil | 39 42 50 N | 076 05 06 W |
| Maryland Line United Methodist Church | Church | 258 | Baltimore | 39 42 50 N | 076 39 14 W |
| Walkers Run | Populated Place | 269 | Baltimore | 39 42 50 N | 076 46 51 W |
| Harney | Populated Place | 153 | Carroll | 39 42 50 N | 077 12 24 W |
| Rowland Hill | Populated Place | 476 | Washington | 39 42 50 N | 077 28 38 W |
| Interchange 1 | Crossing | 152 | Washington | 39 42 50 N | 078 11 19 W |
| Glen Westover | Populated Place | 100 | Cecil | 39 42 49 N | 075 47 49 W |
| Lazarus Church | Church | 223 | Carroll | 39 42 49 N | 076 50 55 W |
| Allana Acres | Populated Place | 319 | Carroll | 39 42 49 N | 076 54 54 W |
| Rarjem Acres | Populated Place | 302 | Carroll | 39 42 49 N | 076 54 28 W |
| Mairs Mill | Populated Place | 116 | Carroll | 39 42 49 N | 077 13 01 W |
| Stonehurst | Populated Place | 157 | Frederick | 39 42 49 N | 077 20 24 W |
| Sausman Mine | Mine | 527 | Garrett | 39 42 49 N | 079 20 48 W |
| Fairview School (historical) | School | 127 | Cecil | 39 42 48 N | 075 55 16 W |
| Nellys Corner (historical) | Populated Place | 140 | Cecil | 39 42 48 N | 075 56 10 W |
| Fellowship Church (historical) | Church | 192 | Harford | 39 42 48 N | 076 27 08 W |
| Lazarus Cemetery | Cemetery | 226 | Carroll | 39 42 48 N | 076 50 53 W |
| Mount Zion United Brethren in Christ Church (historical) | Church | 153 | Carroll | 39 42 48 N | 077 12 24 W |
| Camp Louise | Locale | 433 | Washington | 39 42 48 N | 077 29 56 W |
| Thomas Ridge | Ridge | 692 | Garrett | 39 42 48 N | 079 28 35 W |
| Red Hill Estates | Populated Place | 105 | Cecil | 39 42 47 N | 076 11 16 W |
| Harris Mill Creek | Stream | | Baltimore | 39 42 47 N | 076 35 52 W |
| Emmitsburg Cemetery | Cemetery | 150 | Frederick | 39 42 47 N | 077 18 32 W |
| Yoder School | School | 715 | Garrett | 39 42 47 N | 079 08 57 W |
| Great Crossing Church | Church | 571 | Garrett | 39 42 47 N | 079 24 22 W |
| Moores Chapel | Church | 130 | Cecil | 39 42 46 N | 075 55 23 W |
| Fellowship Cemetery | Cemetery | 195 | Harford | 39 42 46 N | 076 27 08 W |
| Dry Run | Populated Place | 183 | Washington | 39 42 46 N | 077 52 52 W |
| Faith School (historical) | School | 217 | Washington | 39 42 46 N | 077 54 08 W |
| Minnow Run | Stream | | Washington | 39 42 46 N | 078 13 43 W |
| Great Crossings Cemetery | Cemetery | 569 | Garrett | 39 42 46 N | 079 24 23 W |
| Thomas Athletic Field | Locale | | Frederick | 39 42 46 N | 077 42 19 W |
| Moores Chapel Cemetery | Cemetery | 129 | Cecil | 39 42 45 N | 075 55 23 W |
| Slate Ridge School | School | 173 | Harford | 39 42 45 N | 076 20 23 W |
| Oakland | Populated Place | 218 | Baltimore | 39 42 45 N | 076 41 25 W |
| South Branch Gunpowder Falls | Stream | | Carroll | 39 42 45 N | 076 50 07 W |
| Sunrise Cemetery | Cemetery | 152 | Carroll | 39 42 45 N | 077 12 10 W |
| Minnow Run | Stream | 140 | Washington | 39 42 45 N | 078 13 47 W |
| Foxcatcher at Fair Hill | Populated Place | 124 | Cecil | 39 42 44 N | 075 52 23 W |
| Brook Hill Acres | Populated Place | 266 | Carroll | 39 42 44 N | 076 53 04 W |
| Greenfield | Populated Place | 252 | Carroll | 39 42 44 N | 077 00 09 W |
| Victor Cullen State Hospital | Hospital | 448 | Frederick | 39 42 44 N | 077 27 29 W |
| Strites School (historical) | School | 177 | Washington | 39 42 44 N | 077 37 18 W |
| Reid | Populated Place | 177 | Washington | 39 42 44 N | 077 40 45 W |
| Fairview | Populated Place | 151 | Washington | 39 42 44 N | 077 50 35 W |
| Bear Camp Branch | Stream | | Allegany | 39 42 44 N | 078 26 43 W |
| Bear Camp Branch | Stream | 247 | Allegany | 39 42 44 N | 078 26 45 W |
| Hearthstone Mountain | Summit | 616 | Washington | 39 42 43 N | 077 58 20 W |
| Elbow Ridge | Ridge | 281 | Washington | 39 42 43 N | 078 04 30 W |
| Piney Ridge | Ridge | 363 | Allegany | 39 42 43 N | 078 24 48 W |
| Octararo Forge (historical) | Locale | 43 | Cecil | 39 42 42 N | 076 07 14 W |
| Krohs Mill Post Office (historical) | Post Office | 210 | Carroll | 39 42 42 N | 076 51 41 W |
| Lake Royer | Reservoir | 403 | Washington | 39 42 42 N | 077 29 41 W |
| Lehmans Mill | Locale | 177 | Washington | 39 42 42 N | 077 40 30 W |
| Ringgold Graveyard | Cemetery | 223 | Washington | 39 42 41 N | 077 33 58 W |
| Lehmans Mill Historic District | Park | 177 | Washington | 39 42 41 N | 077 40 34 W |
| Martz Hall | Building | | Frederick | 39 42 41 N | 077 42 11 W |
| Cambria | Populated Place | 151 | Harford | 39 42 40 N | 076 20 55 W |
| Saint Pauls Church | Church | 253 | Baltimore | 39 42 40 N | 076 47 24 W |
| Grand Valley Farms | Locale | 248 | Carroll | 39 42 40 N | 076 58 27 W |
| Humbert Schoolhouse Estates | Populated Place | 237 | Carroll | 39 42 40 N | 077 01 44 W |
| Ringgold Church | Church | 218 | Washington | 39 42 40 N | 077 33 55 W |
| Sword Mountain | Summit | 436 | Washington | 39 42 40 N | 077 57 16 W |
| Cherry Grove School (historical) | School | 141 | Cecil | 39 42 39 N | 076 01 12 W |
| Penn Marr Plaza Shopping Center | Locale | 153 | Harford | 39 42 39 N | 076 20 58 W |
| Whiteford Family Reading Center | Building | 153 | Harford | 39 42 39 N | 076 20 52 W |
| Saint Pauls | Populated Place | 251 | Baltimore | 39 42 39 N | 076 47 24 W |
| Young Mans Fancy | Populated Place | 238 | Carroll | 39 42 39 N | 076 47 45 W |
| Cascade | Populated Place | 411 | Washington | 39 42 39 N | 077 29 22 W |
| Blue Mountain School (historical) | School | 288 | Washington | 39 42 39 N | 077 31 37 W |
| Coblentz Hall | Building | | Frederick | 39 42 39 N | 077 42 22 W |
| Vangline Acres | Populated Place | 262 | Carroll | 39 42 38 N | 076 48 37 W |
| Buena Vista Spring Station (historical) | Locale | 406 | Washington | 39 42 38 N | 077 29 34 W |
| Huntsinger Aquatic Center | Building | | Frederick | 39 42 38 N | 077 42 37 W |
| Williams Observatory | Building | | Frederick | 39 42 38 N | 077 42 06 W |
| Fair Hill Nature and Environmental Center | Building | 58 | Cecil | 39 42 37 N | 075 50 23 W |
| Sharpes Cemetery | Cemetery | 120 | Cecil | 39 42 37 N | 075 52 04 W |
| Head of Canal (historical) | Populated Place | 40 | Cecil | 39 42 37 N | 076 13 11 W |
| Middletown Downs | Populated Place | 259 | Baltimore | 39 42 37 N | 076 45 05 W |
| Eberseld Mill (historical) | Locale | 237 | Carroll | 39 42 37 N | 076 47 42 W |
| Humbert School (historical) | School | 239 | Carroll | 39 42 37 N | 077 01 44 W |
| Lake Royer | Lake | 405 | Washington | 39 42 37 N | 077 29 45 W |
| Lower Lake Royer Dam | Dam | 405 | Washington | 39 42 37 N | 077 29 45 W |
| Timber Ridge Heights | Populated Place | 221 | Washington | 39 42 37 N | 078 07 32 W |
| Fairview Cemetery | Cemetery | 379 | Allegany | 39 42 37 N | 078 36 33 W |