| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Suburban Acres | city | Maryland | United States | 38.34 | -75.59 | 26 | |
| Suburban Estates | city | Maryland | United States | 38.26 | -76.48 | 72 | |
| Suburban Mobile Estates | city | Maryland | United States | 38.26 | -76.48 | 72 | |
| Suburbia | city | Maryland | United States | 39.45 | -76.81 | 830 | |
| Suburbia | city | Maryland | United States | 39.17 | -76.60 | 13 | |
| Sudbrook Park | city | Maryland | United States | 39.37 | -76.73 | 830 | |
| Sudlersville | city | Maryland | United States | 39.19 | -75.86 | 49 | |
| Sudley | city | Maryland | United States | 38.82 | -76.58 | 39 | |
| Sudleys Choice | city | Maryland | United States | 38.84 | -76.60 | 118 | |
| Sue Creek Landing | city | Maryland | United States | 39.29 | -76.41 | 3 | |
| Sugar Valley | city | Maryland | United States | 39.72 | -76.81 | 830 | |
| Sugarland | city | Maryland | United States | 39.10 | -77.39 | 278 | |
| Sugarloaf Estates | city | Maryland | United States | 39.31 | -77.38 | 367 | |
| Sugarloaf Meadows | city | Maryland | United States | 39.31 | -77.32 | 830 | |
| Sugarloaf Overlook | city | Maryland | United States | 39.34 | -77.24 | 830 | |
| Sugarloaf Vista | city | Maryland | United States | 39.29 | -77.30 | 830 | |
| Sugarloaf West | city | Maryland | United States | 39.29 | -77.41 | 341 | |
| Sugarvale Estates | city | Maryland | United States | 39.45 | -76.72 | 830 | |
| Suitland | city | Maryland | United States | 38.85 | -76.92 | 249 | |
| Suitland Manor | city | Maryland | United States | 38.85 | -76.93 | 249 | |
| Sullivan Heights | city | Maryland | United States | 39.59 | -76.99 | 830 | |
| Sullivans Trailer Park | city | Maryland | United States | 39.52 | -76.92 | 830 | |
| Summer City | city | Maryland | United States | 38.67 | -76.54 | 75 | |
| Summer Hill | city | Maryland | United States | 39.43 | -76.53 | 203 | |
| Summer Hill Trailer Park | city | Maryland | United States | 39.01 | -76.59 | 98 | |
| Summer Hills | city | Maryland | United States | 39.58 | -76.91 | 830 | |
| Summerfield | city | Maryland | United States | 39.13 | -76.51 | 75 | |
| Summerfield (historical) | city | Maryland | United States | 39.44 | -76.52 | 232 | |
| Summerfield Farms | city | Maryland | United States | 39.43 | -76.53 | 246 | |
| Summerhill Park | city | Maryland | United States | 39.01 | -76.59 | 98 | |
| Summers | city | Maryland | United States | 39.49 | -77.58 | 830 | |
| Summerseat | city | Maryland | United States | 38.40 | -76.66 | 98 | |
| Summerseat Village | city | Maryland | United States | 38.40 | -76.66 | 98 | |
| Summerville (historical) | city | Maryland | United States | 38.33 | -76.48 | 0 | |
| Summit | city | Maryland | United States | 38.32 | -75.61 | 22 | |
| Summit | city | Maryland | United States | 38.70 | -76.56 | 49 | |
| Summit Chase | city | Maryland | United States | 39.39 | -76.68 | 400 | |
| Summit Park | city | Maryland | United States | 39.38 | -76.68 | 396 | |
| Sumner | city | Maryland | United States | 38.96 | -77.11 | 196 | |
| Sumor Estates | city | Maryland | United States | 39.48 | -76.93 | 830 | |
| Sun Set Knoll | city | Maryland | United States | 39.10 | -76.54 | 16 | |
| Sun Valley | city | Maryland | United States | 39.46 | -77.07 | 830 | |
| Sun Valley | city | Maryland | United States | 39.14 | -76.58 | 59 | |
| Sun Valley Estates | city | Maryland | United States | 38.64 | -76.93 | 200 | |
| Sun Valley Farms | city | Maryland | United States | 39.46 | -77.07 | 830 | |
| Sunayr | city | Maryland | United States | 38.36 | -75.57 | 22 | |
| Sunday | city | Maryland | United States | 39.58 | -77.42 | 830 | |
| Sundays Manor | city | Maryland | United States | 39.49 | -77.43 | 354 | |
| Sunderland | city | Maryland | United States | 38.67 | -76.60 | 141 | |
| Sunderland Estates | city | Maryland | United States | 38.65 | -76.59 | 49 | |
| Sunderland Farms | city | Maryland | United States | 38.67 | -76.62 | 127 | |
| Sunderland Hills | city | Maryland | United States | 38.65 | -76.56 | 98 | |
| Sunderland Park | city | Maryland | United States | 38.65 | -76.61 | 147 | |
| Sunderland Woods | city | Maryland | United States | 38.66 | -76.63 | 134 | |
| Sunderlandville (historical) | city | Maryland | United States | 38.68 | -76.60 | 147 | |
| Sundown Manor | city | Maryland | United States | 39.33 | -77.23 | 830 | |
| Sunny Acres | city | Maryland | United States | 39.45 | -77.46 | 830 | |
| Sunny Isle of Kent | city | Maryland | United States | 38.93 | -76.36 | 3 | |
| Sunnybrook | city | Maryland | United States | 39.50 | -76.57 | 830 | |
| Sunnybrook Estates | city | Maryland | United States | 39.57 | -75.80 | 49 | |
| Sunnybrook Farms | city | Maryland | United States | 39.43 | -76.82 | 830 | |
| Sunnybrook Farms | city | Maryland | United States | 39.32 | -77.25 | 830 | |
| Sunnyfield Estates | city | Maryland | United States | 39.21 | -76.64 | 98 | |
| Sunnymeade | city | Maryland | United States | 39.19 | -77.04 | 367 | |
| Sunnyside | city | Maryland | United States | 39.62 | -76.06 | 400 | |
| Sunnyside | city | Maryland | United States | 38.53 | -76.87 | 147 | |
| Sunnyside | city | Maryland | United States | 39.34 | -79.45 | 2509 | |
| Sunnyside | city | Maryland | United States | 39.02 | -76.91 | 88 | |
| Sunnyview Acres | city | Maryland | United States | 39.06 | -76.64 | 111 | |
| Sunrise | city | Maryland | United States | 38.62 | -76.57 | 98 | |
| Sunrise | city | Maryland | United States | 39.32 | -77.56 | 380 | |
| Sunrise Acres | city | Maryland | United States | 38.22 | -76.39 | 3 | |
| Sunrise Beach | city | Maryland | United States | 39.07 | -76.59 | 49 | |
| Sunrise Estates | city | Maryland | United States | 39.69 | -76.05 | 413 | |
| Sunrise Hills | city | Maryland | United States | 38.72 | -76.77 | 98 | |
| Sunset | city | Maryland | United States | 38.63 | -76.58 | 98 | |
| Sunset Acres | city | Maryland | United States | 39.53 | -77.28 | 830 | |
| Sunset Acres | city | Maryland | United States | 39.64 | -77.68 | 830 | |
| Sunset Beach | city | Maryland | United States | 39.16 | -76.52 | 16 | |
| Sunset Gardens | city | Maryland | United States | 39.69 | -76.05 | 413 | |
| Sunset Heights | city | Maryland | United States | 38.38 | -75.61 | 19 | |
| Sunset Hill | city | Maryland | United States | 39.45 | -76.99 | 830 | |
| Sunset Knoll | city | Maryland | United States | 39.65 | -76.03 | 357 | |
| Sunset Knoll | city | Maryland | United States | 39.41 | -76.66 | 301 | |
| Sunset Point | city | Maryland | United States | 39.42 | -75.99 | 29 | |
| Sunset Terrace | city | Maryland | United States | 39.02 | -77.03 | 275 | |
| Sunset View | city | Maryland | United States | 39.72 | -76.71 | 849 | |
| Sunset View | city | Maryland | United States | 39.40 | -77.51 | 830 | |
| Sunset Vista | city | Maryland | United States | 39.59 | -77.08 | 830 | |
| Sunset Way | city | Maryland | United States | 39.63 | -76.83 | 830 | |
| Sunshine | city | Maryland | United States | 39.22 | -77.06 | 830 | |
| Sunshine Acres | city | Maryland | United States | 38.66 | -76.63 | 98 | |
| Sunshine Acres | city | Maryland | United States | 39.22 | -77.06 | 830 | |
| Sunview | city | Maryland | United States | 39.68 | -76.08 | 830 | |
| Surfside | city | Maryland | United States | 39.16 | -76.50 | 3 | |
| Surrattsville | city | Maryland | United States | 38.77 | -76.90 | 246 | |
| Surrey Ridge | city | Maryland | United States | 39.69 | -75.86 | 269 | |
| Susquehanna (historical) | city | Maryland | United States | 38.30 | -76.41 | 3 | |
| Susquehanna Hills | city | Maryland | United States | 39.68 | -76.16 | 200 | |
| Susquehanna Point | city | Maryland | United States | 38.51 | -76.26 | 3 | |
| Susquehanna River Hills | city | Maryland | United States | 39.57 | -76.13 | 396 | |
| Sutton Acres | city | Maryland | United States | 38.50 | -77.02 | 49 | |
| Sutton Manor | city | Maryland | United States | 39.61 | -76.55 | 830 |