Feature Name | Class | Elev. meters | County | Latitude DMS | Longitude DMS |
| Cedar Beach | Populated Place | 6 | Calvert | 38 30 43 N | 076 39 03 W |
| Cedar Hill School (historical) | School | 24 | Calvert | 38 32 17 N | 076 38 07 W |
| Cedar Point | Cape | 3 | Calvert | 38 34 10 N | 076 38 10 W |
| Cedar Point | Populated Place | 8 | Calvert | 38 34 05 N | 076 37 47 W |
| Cedar Run | Populated Place | 29 | Calvert | 38 44 30 N | 076 37 59 W |
| Cedarwood | Populated Place | 34 | Calvert | 38 44 35 N | 076 39 29 W |
| Central Methodist Cemetery | Cemetery | 46 | Calvert | 38 31 27 N | 076 37 05 W |
| Central Square Shopping Center | Locale | 41 | Calvert | 38 32 40 N | 076 35 15 W |
| Central Village | Populated Place | 42 | Calvert | 38 33 15 N | 076 34 36 W |
| Century Estates | Populated Place | 29 | Calvert | 38 42 16 N | 076 38 57 W |
| Century Manor | Populated Place | 40 | Calvert | 38 45 16 N | 076 38 03 W |
| Chaney | Populated Place | 43 | Calvert | 38 45 05 N | 076 38 05 W |
| Chaney School | School | 51 | Calvert | 38 44 41 N | 076 38 26 W |
| Chaney Station | Populated Place | 41 | Calvert | 38 45 15 N | 076 38 23 W |
| Chaneyville | Populated Place | 34 | Calvert | 38 41 30 N | 076 38 24 W |
| Chaneyville Farm Estates | Populated Place | 48 | Calvert | 38 41 25 N | 076 39 59 W |
| Chapel Hill | Populated Place | 45 | Calvert | 38 31 15 N | 076 36 45 W |
| Cherry Hill | Populated Place | 24 | Calvert | 38 21 16 N | 076 26 01 W |
| Chesapeake Bay | Bay | -7 | Calvert | 38 31 00 N | 076 22 59 W |
| Chesapeake Beach | Populated Place | 15 | Calvert | 38 41 10 N | 076 32 05 W |
| Chesapeake Beach Post Office | Post Office | 12 | Calvert | 38 41 19 N | 076 32 06 W |
| Chesapeake Beach Public School (historical) | School | 2 | Calvert | 38 41 54 N | 076 32 07 W |
| Chesapeake Beach Town Hall | Building | 0 | Calvert | 38 41 37 N | 076 32 03 W |
| Chesapeake Biological Laboratory | Locale | 0 | Calvert | 38 19 06 N | 076 27 13 W |
| Chesapeake Country Club | Locale | 39 | Calvert | 38 22 58 N | 076 25 44 W |
| Chesapeake Cove Estates | Populated Place | 32 | Calvert | 38 22 36 N | 076 24 56 W |
| Chesapeake Heights on the Bay | Populated Place | 20 | Calvert | 38 34 00 N | 076 31 36 W |
| Chesapeake Railway Museum | Building | 3 | Calvert | 38 41 23 N | 076 32 02 W |
| Chesapeake Ranch Airport | Airport | 36 | Calvert | 38 21 40 N | 076 24 19 W |
| Chesapeake Ranch Club Dam | Dam | 21 | Calvert | 38 21 48 N | 076 24 59 W |
| Chesapeake Ranch Club Lake | Reservoir | 21 | Calvert | 38 21 48 N | 076 24 59 W |
| Chesapeake Ranch Estates | Populated Place | 30 | Calvert | 38 20 46 N | 076 25 04 W |
| Chesapeake Ranch Estates Campground | Locale | 31 | Calvert | 38 21 45 N | 076 25 49 W |
| Chesapeake Station (subdivision) | Populated Place | 14 | Calvert | 38 41 15 N | 076 32 06 W |
| Chesapeake Station Shopping Center | Locale | 6 | Calvert | 38 41 20 N | 076 32 08 W |
| Chesapeake Woods | Populated Place | 25 | Calvert | 38 21 33 N | 076 26 09 W |
| Chew Creek | Stream | | Calvert | 38 37 57 N | 076 41 09 W |
| Chippingwood | Populated Place | 38 | Calvert | 38 29 12 N | 076 31 40 W |
| Christ Church | Church | 49 | Calvert | 38 29 39 N | 076 32 10 W |
| Christ Church Cemetery | Cemetery | 49 | Calvert | 38 29 38 N | 076 32 11 W |
| Christiana | Populated Place | 38 | Calvert | 38 38 23 N | 076 32 22 W |
| Church of Christ | Church | 43 | Calvert | 38 37 47 N | 076 36 20 W |
| Circles Trailer Park | Populated Place | 36 | Calvert | 38 42 08 N | 076 38 52 W |
| Clahamman Hills | Populated Place | 47 | Calvert | 38 33 35 N | 076 33 58 W |
| Clearview North | Populated Place | 46 | Calvert | 38 42 48 N | 076 33 55 W |
| Cleve Branch | Stream | | Calvert | 38 22 04 N | 076 25 27 W |
| Cliffs of Calvert | Populated Place | 19 | Calvert | 38 20 21 N | 076 24 26 W |
| Clng Cove Point Heliport | Airport | 37 | Calvert | 38 23 30 N | 076 24 29 W |
| Cobb Creek | Stream | | Calvert | 38 21 52 N | 076 23 16 W |
| Cobb Landing | Locale | 1 | Calvert | 38 21 50 N | 076 23 14 W |
| Cocktown Creek | Stream | | Calvert | 38 37 49 N | 076 40 45 W |
| Coles Creek | Stream | | Calvert | 38 20 17 N | 076 25 54 W |
| Columbia Lng Secondary Dam | Dam | 27 | Calvert | 38 23 24 N | 076 24 59 W |
| Commerce Park | Locale | 35 | Calvert | 38 32 36 N | 076 35 18 W |
| Community College at Calvert County | School | 49 | Calvert | 38 29 29 N | 076 32 16 W |
| Coopers United Methodist Church | Church | 8 | Calvert | 38 42 29 N | 076 39 03 W |
| Coster | Populated Place | 4 | Calvert | 38 21 26 N | 076 28 15 W |
| Coster Cove | Bay | 0 | Calvert | 38 21 11 N | 076 28 27 W |
| Country Road Estates | Populated Place | 39 | Calvert | 38 44 05 N | 076 39 12 W |
| Country Village Plaza Shopping Center | Locale | 42 | Calvert | 38 42 57 N | 076 39 36 W |
| Cove Camp | Locale | 14 | Calvert | 38 25 13 N | 076 29 34 W |
| Cove Lake | Reservoir | 2 | Calvert | 38 22 12 N | 076 23 26 W |
| Cove of Calvert | Populated Place | 6 | Calvert | 38 22 33 N | 076 23 34 W |
| Cove Point | Cape | 2 | Calvert | 38 23 04 N | 076 22 52 W |
| Cove Point | Populated Place | 1 | Calvert | 38 22 52 N | 076 23 20 W |
| Cove Point Beach | Beach | 0 | Calvert | 38 22 52 N | 076 23 14 W |
| Cove Point Hollow | Bay | -3 | Calvert | 38 22 37 N | 076 23 06 W |
| Cove Point Lighthouse | Locale | 4 | Calvert | 38 23 10 N | 076 22 55 W |
| Cove Point Marsh | Swamp | 0 | Calvert | 38 23 17 N | 076 23 42 W |
| Cove Point Park | Park | 32 | Calvert | 38 23 10 N | 076 25 09 W |
| Cove Point Woods | Populated Place | 33 | Calvert | 38 22 45 N | 076 24 15 W |
| Cove View | Populated Place | 4 | Calvert | 38 21 45 N | 076 27 58 W |
| Covenant Creek | Stream | | Calvert | 38 42 50 N | 076 38 46 W |
| Cox | Populated Place | 41 | Calvert | 38 35 48 N | 076 38 08 W |
| Crestwood | Populated Place | 39 | Calvert | 38 44 26 N | 076 37 54 W |
| Crow Haven Estates | Populated Place | 39 | Calvert | 38 37 46 N | 076 38 04 W |
| Cypress Knolls | Populated Place | 37 | Calvert | 38 29 40 N | 076 35 08 W |
| Cypress Swamp | Swamp | 1 | Calvert | 38 29 11 N | 076 35 40 W |
| Dares (historical) | Populated Place | 42 | Calvert | 38 33 31 N | 076 32 24 W |
| Dares Beach | Populated Place | 13 | Calvert | 38 33 42 N | 076 30 56 W |
| Dares Wharf Post Office (historical) | Post Office | 35 | Calvert | 38 30 30 N | 076 32 29 W |
| Deep Landing | Populated Place | 10 | Calvert | 38 35 46 N | 076 40 08 W |
| Deep Landing Estates | Populated Place | 7 | Calvert | 38 35 25 N | 076 40 09 W |
| Deer Crossing | Populated Place | 48 | Calvert | 38 33 30 N | 076 32 59 W |
| Deerfield | Populated Place | 50 | Calvert | 38 36 36 N | 076 37 31 W |
| Den Mar | Populated Place | 44 | Calvert | 38 40 14 N | 076 36 14 W |
| District 1 (Solomons Island) Election District | Civil | 34 | Calvert | 38 25 40 N | 076 27 59 W |
| District 2 (Prince Frederick) Election District | Civil | 37 | Calvert | 38 34 19 N | 076 34 03 W |
| District 3 (Sunderland) Election District | Civil | 49 | Calvert | 38 40 40 N | 076 35 46 W |
| Dory Court | Populated Place | 47 | Calvert | 38 39 44 N | 076 32 27 W |
| Double Oak Estates | Populated Place | 46 | Calvert | 38 32 48 N | 076 31 55 W |
| Dowell | Populated Place | 7 | Calvert | 38 20 46 N | 076 27 32 W |
| Dowell Post Office | Post Office | 1 | Calvert | 38 20 17 N | 076 27 09 W |
| Driftwood Beach | Populated Place | 23 | Calvert | 38 21 01 N | 076 23 54 W |
| Drum Point | Cape | 2 | Calvert | 38 19 12 N | 076 25 18 W |
| Drum Point | Populated Place | 13 | Calvert | 38 19 36 N | 076 25 34 W |
| Drum Point Lighthouse | Locale | 4 | Calvert | 38 19 08 N | 076 25 15 W |
| Drum Point Pond | Lake | 4 | Calvert | 38 19 23 N | 076 25 20 W |
| Dukes Wharf | Locale | 0 | Calvert | 38 28 04 N | 076 38 32 W |
| Duncans Pond | Lake | 0 | Calvert | 38 27 09 N | 076 27 38 W |
| Dunkirk | Populated Place | 48 | Calvert | 38 43 18 N | 076 39 38 W |
| Dunkirk District Park | Park | 40 | Calvert | 38 43 22 N | 076 39 44 W |
| Dunkirk Fields | Populated Place | 15 | Calvert | 38 43 17 N | 076 38 14 W |
| Dunkirk Hall | Populated Place | 33 | Calvert | 38 42 17 N | 076 38 46 W |
| Dunkirk Market Place Shopping Center | Locale | 43 | Calvert | 38 43 10 N | 076 39 35 W |
| Dunkirk Post Office | Post Office | 45 | Calvert | 38 43 08 N | 076 39 36 W |
| Dunkirk South | Populated Place | 31 | Calvert | 38 42 46 N | 076 39 28 W |
| Dunkirk Town Center | Populated Place | 37 | Calvert | 38 43 13 N | 076 39 31 W |
| Dunkirk Volunteer Fire Department and Rescue Squad Company 5 | Building | | Calvert | 39 12 22 N | 077 06 20 W |
| Dunkirk Woods | Populated Place | 33 | Calvert | 38 43 58 N | 076 38 15 W |