Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Bailes Mill | Populated Place | 186 | Carroll | 39 31 52 N | 077 03 29 W |
| Baileys Mill (historical) | Locale | 1 | Wicomico | 38 22 18 N | 075 36 09 W |
| Baileys Neck | Cape | 3 | Talbot | 38 43 34 N | 076 06 26 W |
| Baileys Woods (historical) | Woods | 5 | Wicomico | 38 22 20 N | 075 36 04 W |
| Bailys Branch | Stream | -1 | Anne Arundel | 39 06 51 N | 076 32 39 W |
| Bainbridge | Populated Place | 5 | Worcester | 38 23 30 N | 075 10 25 W |
| Bainbridge Elementary School | School | 134 | Cecil | 39 36 23 N | 076 04 27 W |
| Bair Stadium | Park | 241 | Carroll | 39 35 05 N | 077 00 13 W |
| Bais Yaakov School for Girls | School | 167 | Baltimore | 39 25 38 N | 076 43 32 W |
| Bais Yaakov School for Girls | School | 132 | Baltimore (city) | 39 20 58 N | 076 39 26 W |
| Baisman Run | Stream | | Baltimore | 39 28 38 N | 076 40 22 W |
| Baker | Populated Place | 7 | Queen Anne's | 39 00 28 N | 076 08 19 W |
| Baker Cemetery | Cemetery | 102 | Harford | 39 31 52 N | 076 11 59 W |
| Baker Cove | Bay | 4 | Cecil | 39 33 03 N | 076 01 52 W |
| Baker Memorial Chapel | Church | 257 | Carroll | 39 35 02 N | 077 00 08 W |
| Baker Park | Park | 85 | Frederick | 39 24 58 N | 077 25 26 W |
| Bakerfield Elementary School | School | 40 | Harford | 39 30 47 N | 076 10 15 W |
| Bakersfield | Populated Place | 187 | Harford | 39 33 47 N | 076 29 19 W |
| Bakersville | Populated Place | 129 | Washington | 39 30 53 N | 077 45 27 W |
| Bald Eagle | Populated Place | 45 | Prince George's | 38 40 35 N | 076 43 21 W |
| Bald Eagle Island Campground | Locale | 68 | Frederick | 39 17 56 N | 077 33 26 W |
| Bald Eagle Point | Cape | 0 | Talbot | 38 43 51 N | 076 18 48 W |
| Bald Eagle School (historical) | School | 45 | Prince George's | 38 40 34 N | 076 43 17 W |
| Bald Friar | Summit | 116 | Cecil | 39 42 20 N | 076 12 46 W |
| Bald Friar (historical) | Populated Place | 64 | Cecil | 39 42 10 N | 076 12 36 W |
| Bald Friar Ferry (historical) | Crossing | 30 | Cecil | 39 42 00 N | 076 13 19 W |
| Bald Hill | Populated Place | 97 | Harford | 39 41 09 N | 076 13 43 W |
| Bald Hill Branch | Stream | | Prince George's | 38 55 15 N | 076 49 11 W |
| Bald Knob | Summit | 615 | Allegany | 39 42 55 N | 078 52 57 W |
| Bald Knob | Summit | 795 | Garrett | 39 39 42 N | 079 16 25 W |
| Baldwin | Populated Place | 113 | Baltimore | 39 29 41 N | 076 28 13 W |
| Baldwin Acres | Populated Place | 2 | Queen Anne's | 38 57 35 N | 076 20 02 W |
| Baldwin Church | Church | 43 | Cecil | 39 39 27 N | 075 49 32 W |
| Baldwin Estates | Populated Place | 143 | Baltimore | 39 29 01 N | 076 26 59 W |
| Baldwin Hills | Populated Place | 40 | Anne Arundel | 39 02 53 N | 076 38 55 W |
| Baldwin Hills | Populated Place | 177 | Harford | 39 34 00 N | 076 27 48 W |
| Baldwin Hills South | Populated Place | 29 | Anne Arundel | 39 02 22 N | 076 38 42 W |
| Baldwin Manor (subdivision) | Populated Place | 24 | Harford | 39 30 35 N | 076 09 34 W |
| Baldwin Memorial United Methodist Church | Church | 30 | Anne Arundel | 39 03 34 N | 076 37 38 W |
| Baldwin Mill Terrace | Populated Place | 160 | Baltimore | 39 30 32 N | 076 28 39 W |
| Baldwin Post Office | Post Office | 112 | Baltimore | 39 29 40 N | 076 28 16 W |
| Baldwin Station | Locale | 114 | Baltimore | 39 29 52 N | 076 28 21 W |
| Ball Point | Cape | -5 | St. Mary's | 38 07 15 N | 076 28 22 W |
| Ballard | Populated Place | 75 | Prince George's | 38 46 00 N | 076 52 52 W |
| Ballard Gardens | Populated Place | 14 | Baltimore | 39 20 11 N | 076 26 38 W |
| Ballards Island | Island | 1 | Somerset | 38 14 04 N | 075 50 38 W |
| Ballenger Creek | Populated Place | 92 | Frederick | 39 22 21 N | 077 26 07 W |
| Ballenger Creek | Stream | | Frederick | 39 21 45 N | 077 24 36 W |
| Ballenger Creek Elementary School | School | 85 | Frederick | 39 22 36 N | 077 25 43 W |
| Ballenger Creek Meadows | Populated Place | 118 | Frederick | 39 23 15 N | 077 27 00 W |
| Ballenger Creek Middle School | School | 96 | Frederick | 39 23 05 N | 077 26 32 W |
| Ballenger Creek Park | Park | 98 | Frederick | 39 22 55 N | 077 26 59 W |
| Ballenger Creek Sewage Treatment Plant | Locale | 74 | Frederick | 39 21 51 N | 077 24 34 W |
| Ballenger Heights | Populated Place | 149 | Frederick | 39 21 42 N | 077 29 58 W |
| Balliston Point | Cape | 1 | Baltimore | 39 16 09 N | 076 23 45 W |
| Balls Creek | Bay | -3 | Talbot | 38 43 28 N | 076 16 33 W |
| Balls Point | Cape | 3 | Charles | 38 25 57 N | 077 06 25 W |
| Balls Road | Locale | 152 | Washington | 39 35 09 N | 077 43 25 W |
| Balmoral | Populated Place | 135 | Frederick | 39 25 15 N | 077 18 02 W |
| Baltimore | Populated Place | 10 | Baltimore (city) | 39 17 25 N | 076 36 44 W |
| Baltimore Academy of Visitation | School | 135 | Baltimore (city) | 39 22 02 N | 076 38 05 W |
| Baltimore Airpark (historical) | Airport | 50 | Baltimore | 39 24 16 N | 076 25 34 W |
| Baltimore and Ohio Railroad Covered Bridge | Bridge | 73 | Washington | 39 19 27 N | 077 43 43 W |
| Baltimore and Ohio Railroad Museum | Building | 20 | Baltimore (city) | 39 17 07 N | 076 37 58 W |
| Baltimore Arena | Building | 14 | Baltimore (city) | 39 17 18 N | 076 37 07 W |
| Baltimore Ballet Center | School | 36 | Baltimore (city) | 39 18 30 N | 076 37 23 W |
| Baltimore Cemetery | Cemetery | 35 | Baltimore (city) | 39 18 42 N | 076 34 41 W |
| Baltimore City College | School | 78 | Baltimore (city) | 39 19 32 N | 076 35 48 W |
| Baltimore City Courthouse | Building | 12 | Baltimore (city) | 39 17 26 N | 076 36 47 W |
| Baltimore City Detention Center | Building | | Baltimore (city) | 39 17 55 N | 076 36 33 W |
| Baltimore City Fire Department | Building | | Baltimore (city) | 39 29 48 N | 077 01 27 W |
| Baltimore City Hall | Building | 6 | Baltimore (city) | 39 17 27 N | 076 36 38 W |
| Baltimore City Police Department | Building | | Anne Arundel | 39 32 25 N | 077 02 14 W |
| Baltimore Civil War Museum | Building | | Baltimore (city) | 39 17 01 N | 076 36 09 W |
| Baltimore Commons Business Park | Locale | | Anne Arundel | 39 10 23 N | 076 42 06 W |
| Baltimore Corner | Populated Place | 18 | Caroline | 39 03 29 N | 075 50 41 W |
| Baltimore Country Club | Locale | 61 | Baltimore (city) | 39 21 20 N | 076 38 43 W |
| Baltimore Country Club at Five Farms | Locale | 177 | Baltimore | 39 26 32 N | 076 39 59 W |
| Baltimore County | Civil | 91 | Baltimore | 39 28 00 N | 076 38 59 W |
| Baltimore County Courthouse | Building | 141 | Baltimore | 39 24 01 N | 076 36 24 W |
| Baltimore County Fire Station Number Six | Building | 31 | Baltimore | 39 14 05 N | 076 41 12 W |
| Baltimore County General Hospital | Hospital | 154 | Baltimore | 39 21 24 N | 076 46 59 W |
| Baltimore County Health Center (historical) | Building | 13 | Baltimore | 39 18 42 N | 076 28 23 W |
| Baltimore County Jail | Building | 129 | Baltimore | 39 23 52 N | 076 36 29 W |
| Baltimore County Police Department Precinct 01 Wilkens | Building | | Baltimore | 39 26 38 N | 077 12 02 W |
| Baltimore County Police Department Precinct 02 Woodlawn | Building | | Baltimore | 39 32 21 N | 077 13 05 W |
| Baltimore County Police Department Precinct 06 Towson | Building | | Baltimore | 39 40 30 N | 077 01 09 W |
| Baltimore County Police Department Precinct 07 Cockeysville | Building | | Baltimore | 39 49 24 N | 077 05 37 W |
| Baltimore County Police Department Precinct 08 Parkville | Building | | Baltimore | 39 39 23 N | 076 54 43 W |
| Baltimore County Police Department Precinct 09 White Marsh | Building | | Baltimore | 39 38 00 N | 076 47 31 W |
| Baltimore County Police Department Precinct 11 Essex | Building | | Baltimore | 39 32 05 N | 076 47 11 W |
| Baltimore County Police Department Precinct 12 North Point | Building | | Baltimore | 39 27 28 N | 076 50 18 W |
| Baltimore First Free Methodist Church | Church | 65 | Baltimore (city) | 39 19 47 N | 076 37 39 W |
| Baltimore First Seventh Day Adventist Church | Church | 126 | Howard | 39 16 52 N | 076 49 29 W |
| Baltimore Hebrew Cemetery | Cemetery | 46 | Baltimore (city) | 39 19 00 N | 076 34 50 W |
| Baltimore Hebrew University | School | 137 | Baltimore (city) | 39 21 15 N | 076 41 17 W |
| Baltimore Highlands | Populated Place | 10 | Baltimore | 39 13 59 N | 076 38 12 W |
| Baltimore Highlands Elementary School | School | 28 | Baltimore | 39 14 12 N | 076 38 32 W |
| Baltimore Lighthouse | Locale | 6 | Anne Arundel | 39 03 32 N | 076 23 56 W |
| Baltimore Livestock Auction Market | Locale | 187 | Howard | 39 18 45 N | 076 57 31 W |
| Baltimore Maritime Museum | Building | 1 | Baltimore (city) | 39 17 10 N | 076 36 30 W |
| Baltimore Municipal Airport (historical) | Airport | 4 | Baltimore | 39 14 49 N | 076 31 49 W |
| Baltimore Museum of Art | Building | 60 | Baltimore (city) | 39 19 33 N | 076 37 09 W |
| Baltimore Museum of Industry | Building | 1 | Baltimore (city) | 39 16 27 N | 076 36 07 W |
| Baltimore National Cemetery | Cemetery | 99 | Baltimore | 39 16 29 N | 076 42 22 W |
| Baltimore Pike Volunteer Fire Company | Building | | Allegany | 40 07 58 N | 079 08 52 W |
| Baltimore Police Department Heliport | Airport | 5 | Baltimore | 39 17 25 N | 076 36 27 W |
| Baltimore Polytechnic Institute | School | 97 | Baltimore (city) | 39 20 48 N | 076 38 41 W |
| Baltimore Post Office | Post Office | 6 | Baltimore (city) | 39 17 32 N | 076 36 20 W |
| Baltimore Public Works Museum | Building | 2 | Baltimore (city) | 39 17 05 N | 076 36 12 W |