Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Clarksville Elementary School | School | 156 | Howard | 39 13 06 N | 076 55 45 W |
| Clarksville Middle School | School | 148 | Howard | 39 11 24 N | 076 55 24 W |
| Clear Spring Elementary School | School | 182 | Washington | 39 39 24 N | 077 56 03 W |
| Clear Spring High School | School | 183 | Washington | 39 39 29 N | 077 56 13 W |
| Clear Spring Middle School | School | 178 | Washington | 39 39 30 N | 077 56 07 W |
| Clearspring Elementary School | School | 236 | Montgomery | 39 15 58 N | 077 12 29 W |
| Clearview School (historical) | School | 140 | Carroll | 39 38 54 N | 077 13 22 W |
| Clemens Crossing Elementary School | School | 109 | Howard | 39 11 36 N | 076 52 18 W |
| Clements School (historical) | School | 33 | St. Mary's | 38 19 17 N | 076 41 48 W |
| Clifton Park Junior High School | School | 42 | Baltimore (city) | 39 19 02 N | 076 35 34 W |
| Clinton Grove Elementary School | School | 69 | Prince George's | 38 45 38 N | 076 55 20 W |
| Clopper Mill Elementary School | School | 104 | Montgomery | 39 09 33 N | 077 15 43 W |
| Cloverly Elementary School | School | 163 | Montgomery | 39 06 27 N | 076 59 39 W |
| Cockeysville Middle School | School | 109 | Baltimore | 39 28 21 N | 076 37 47 W |
| Cokesbury School (historical) | School | 10 | Dorchester | 38 36 38 N | 075 43 48 W |
| Cold Hill Academy (historical) | School | 256 | Montgomery | 39 16 55 N | 077 12 37 W |
| Cold Spring Elementary School | School | 109 | Montgomery | 39 03 33 N | 077 11 19 W |
| Coldstream Park Elementary School | School | 51 | Baltimore (city) | 39 19 18 N | 076 36 09 W |
| Colesville School | School | 147 | Montgomery | 39 05 09 N | 076 59 56 W |
| Colesville School (historical) | School | 86 | Howard | 39 07 43 N | 076 50 43 W |
| Colgate Elementary School | School | 37 | Baltimore | 39 17 40 N | 076 31 07 W |
| College Gardens Elementary School | School | 134 | Montgomery | 39 06 10 N | 077 09 47 W |
| College Gardens Elementary School | School | 135 | Montgomery | 39 06 13 N | 077 09 43 W |
| College Park School | School | 18 | Prince George's | 38 58 42 N | 076 56 04 W |
| Collington School (historical) | School | 51 | Prince George's | 38 57 39 N | 076 45 58 W |
| Collington Square Elementary School | School | 43 | Baltimore (city) | 39 18 26 N | 076 35 12 W |
| Colmar Manor School | School | 4 | Prince George's | 38 55 53 N | 076 56 56 W |
| Colonel E Brooke Lee Middle School | School | 128 | Montgomery | 39 02 59 N | 077 01 51 W |
| Colonel Richardson High School | School | 16 | Caroline | 38 45 17 N | 075 49 42 W |
| Colonel Richardson Middle School | School | 16 | Caroline | 38 45 17 N | 075 49 33 W |
| Colonel Zadok Magruder High School | School | 132 | Montgomery | 39 07 53 N | 077 07 06 W |
| Columbia Academy | School | 119 | Howard | 39 10 44 N | 076 52 20 W |
| Columbia Montessori School | School | 130 | Howard | 39 13 23 N | 076 52 32 W |
| Columbia Park Elementary School | School | 30 | Prince George's | 38 55 00 N | 076 53 14 W |
| Columbia Street School (historical) | School | 200 | Allegany | 39 39 31 N | 078 45 57 W |
| Columbia Union College | School | 67 | Montgomery | 38 59 05 N | 076 59 58 W |
| Columbus School | School | 32 | Baltimore (city) | 39 18 45 N | 076 35 23 W |
| Combination School | School | 840 | Garrett | 39 23 53 N | 079 16 20 W |
| Community College at Calvert County | School | 49 | Calvert | 38 29 29 N | 076 32 16 W |
| Community College of Baltimore | School | 106 | Baltimore (city) | 39 19 11 N | 076 39 44 W |
| Community College of Baltimore County Catonsville | School | 134 | Baltimore | 39 15 10 N | 076 44 07 W |
| Community College of Baltimore County Dundalk | School | 27 | Baltimore | 39 15 57 N | 076 30 50 W |
| Community College of Baltimore County Essex | School | 59 | Baltimore | 39 21 13 N | 076 28 53 W |
| Community College of Baltimore Harbor Campus | School | 3 | Baltimore (city) | 39 17 16 N | 076 36 27 W |
| Concord Elementary School | School | 89 | Prince George's | 38 51 46 N | 076 54 30 W |
| Concordia Lutheran School | School | 24 | Prince George's | 38 57 22 N | 076 57 15 W |
| Congressional Elementary School (historical) | School | 109 | Montgomery | 39 03 25 N | 077 07 39 W |
| Connecticut Park Elementary School (historical) | School | 111 | Montgomery | 39 03 42 N | 077 04 44 W |
| Connelly School of the Holy Child | School | 91 | Montgomery | 38 59 58 N | 077 11 15 W |
| Conococheague Elementary School | School | 145 | Washington | 39 39 15 N | 077 49 41 W |
| Conowingo Elementary School | School | 94 | Cecil | 39 40 27 N | 076 09 31 W |
| Cool Springs Elementary School | School | 53 | Prince George's | 39 00 08 N | 076 58 19 W |
| Cooper Lane Academy | School | 55 | Prince George's | 38 56 22 N | 076 53 59 W |
| Coppin Demonstration School (historical) | School | 35 | Baltimore (city) | 39 17 06 N | 076 38 44 W |
| Coppin State University | School | 81 | Baltimore (city) | 39 18 37 N | 076 39 30 W |
| Cora L Rice Elementary School | School | 65 | Prince George's | 38 54 13 N | 076 52 24 W |
| Cordova Elementary School | School | 12 | Talbot | 38 52 46 N | 075 59 48 W |
| Corkran Middle School | School | 29 | Anne Arundel | 39 08 18 N | 076 38 01 W |
| Corriganville School (historical) | School | 219 | Allegany | 39 41 37 N | 078 47 20 W |
| Corunna School | School | 793 | Garrett | 39 16 58 N | 079 22 38 W |
| Country School | School | 14 | Talbot | 38 46 35 N | 076 03 40 W |
| Countryside School | School | 7 | Dorchester | 38 32 53 N | 076 00 23 W |
| Crellin Elementary School | School | 731 | Garrett | 39 23 22 N | 079 27 58 W |
| Cresaptown Elementary School | School | 236 | Allegany | 39 35 23 N | 078 49 53 W |
| Cresthaven Elementary School | School | 114 | Montgomery | 39 01 39 N | 076 59 15 W |
| Crestwood Middle School | School | 96 | Frederick | 39 23 35 N | 077 25 29 W |
| Crisfield Elementary School | School | 1 | Somerset | 37 58 44 N | 075 50 39 W |
| Crisfield High School | School | 1 | Somerset | 37 59 12 N | 075 50 36 W |
| Crofton Elementary School | School | 36 | Anne Arundel | 39 00 47 N | 076 41 19 W |
| Crofton Junior High School | School | 53 | Anne Arundel | 38 59 50 N | 076 40 15 W |
| Crofton Meadows Elementary School | School | 43 | Anne Arundel | 39 00 55 N | 076 40 13 W |
| Crofton Woods Elementary School | School | 36 | Anne Arundel | 38 59 52 N | 076 41 39 W |
| Croom High School | School | 42 | Prince George's | 38 46 28 N | 076 44 06 W |
| Croom Vocational School | School | 48 | Prince George's | 38 46 26 N | 076 44 49 W |
| Cross Country Elementary School | School | 117 | Baltimore (city) | 39 21 45 N | 076 41 19 W |
| Crossland High School | School | 78 | Prince George's | 38 47 40 N | 076 55 49 W |
| Crusaders Christian Academy | School | 12 | Wicomico | 38 23 24 N | 075 34 14 W |
| Curtis Bay School | School | 13 | Baltimore (city) | 39 13 36 N | 076 35 17 W |
| Damascus Elementary School | School | 264 | Montgomery | 39 17 07 N | 077 12 39 W |
| Damascus High School | School | 256 | Montgomery | 39 16 55 N | 077 12 37 W |
| Daniel A Payne Public School (historical) | School | 5 | Baltimore (city) | 39 16 37 N | 076 37 11 W |
| Darlington Elementary School | School | 100 | Harford | 39 38 13 N | 076 12 04 W |
| Darnestown Elementary School | School | 129 | Montgomery | 39 06 08 N | 077 17 06 W |
| Davidsonville Elementary School | School | 43 | Anne Arundel | 38 55 07 N | 076 38 21 W |
| Dayton School (historical) | School | 169 | Howard | 39 13 56 N | 076 59 36 W |
| De La Salle College | School | 44 | Prince George's | 38 56 59 N | 076 58 46 W |
| De Matha High School | School | 27 | Prince George's | 38 57 28 N | 076 56 31 W |
| De Sales Hall | School | 28 | Prince George's | 38 57 10 N | 076 59 06 W |
| Deal Island Elementary School | School | 2 | Somerset | 38 09 23 N | 075 56 51 W |
| Deale Elementary School | School | 2 | Anne Arundel | 38 46 44 N | 076 33 08 W |
| Deep Creek Middle School | School | 6 | Baltimore | 39 17 37 N | 076 27 09 W |
| Deep Creek School | School | 4 | Baltimore | 39 18 32 N | 076 27 13 W |
| Deep Run School | School | 243 | Carroll | 39 41 45 N | 076 57 30 W |
| Deer Crossing Elementary | School | 146 | Frederick | 39 24 01 N | 077 17 54 W |
| Deer Park Elementary School | School | 177 | Baltimore | 39 23 17 N | 076 49 12 W |
| Deer Park Middle School | School | 184 | Baltimore | 39 23 22 N | 076 49 04 W |
| Deerfield Elementary School | School | 12 | Harford | 39 25 20 N | 076 17 26 W |
| Deerfield Run Elementary School | School | 44 | Prince George's | 39 04 16 N | 076 50 47 W |
| Dellinger School (historical) | School | 128 | Washington | 39 31 52 N | 077 50 56 W |
| Delmar Elementary School | School | 15 | Wicomico | 38 26 52 N | 075 34 31 W |
| Dennis Avenue Elementary School (historical) | School | 110 | Montgomery | 39 01 29 N | 077 02 34 W |
| Denton Elementary School | School | 11 | Caroline | 38 52 11 N | 075 49 54 W |
| Detwiler School | School | 83 | Prince George's | 38 50 55 N | 076 54 32 W |
| Diamond Elementary School | School | 125 | Montgomery | 39 08 08 N | 077 14 21 W |
| Dickey Hill Elementary School | School | 118 | Baltimore (city) | 39 18 40 N | 076 42 14 W |
| Dingle School (historical) | School | 247 | Allegany | 39 38 59 N | 078 47 07 W |
| District Heights Elementary School | School | 83 | Prince George's | 38 51 32 N | 076 53 53 W |
| District of Columbia Childrens Center | School | 42 | Anne Arundel | 39 06 00 N | 076 47 10 W |
| Divine Savior Seminary | School | 35 | Prince George's | 38 58 33 N | 076 51 46 W |
| Doctor Bernard Harris Senior Elementary School | School | 37 | Baltimore (city) | 39 18 25 N | 076 35 52 W |