| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Society Hill | city | Maryland | United States | 38.27 | -76.67 | 3 | |
| Solitude | city | Maryland | United States | 38.75 | -76.20 | 3 | |
| Sollers | city | Maryland | United States | 38.39 | -76.49 | 29 | |
| Sollers Point | city | Maryland | United States | 39.23 | -76.51 | 0 | |
| Solley | city | Maryland | United States | 39.17 | -76.55 | 49 | |
| Solley Heights | city | Maryland | United States | 39.15 | -76.57 | 49 | |
| Solley Park | city | Maryland | United States | 39.18 | -76.55 | 49 | |
| Solomons | city | Maryland | United States | 38.32 | -76.45 | 0 | |
| Somerset | city | Maryland | United States | 38.97 | -77.10 | 249 | |
| Somerset | city | Maryland | United States | 38.40 | -75.17 | 19 | |
| Somerset | city | Maryland | United States | 38.70 | -76.63 | 111 | |
| Somerset | city | Maryland | United States | 39.53 | -77.04 | 830 | |
| Somerset | city | Maryland | United States | 39.27 | -76.86 | 393 | |
| Somerset | city | Maryland | United States | 39.15 | -76.63 | 75 | |
| Somerset | city | Maryland | United States | 39.41 | -77.51 | 830 | |
| Somerset Heights | city | Maryland | United States | 38.97 | -77.09 | 298 | |
| Somersett Town (historical) | city | Maryland | United States | 38.15 | -75.77 | 3 | |
| Sonoma | city | Maryland | United States | 39.00 | -77.11 | 347 | |
| Sorrento | city | Maryland | United States | 39.39 | -76.65 | 232 | |
| Sorrento Run | city | Maryland | United States | 39.39 | -76.66 | 321 | |
| Sotterley | city | Maryland | United States | 38.38 | -76.53 | 13 | |
| South Baltimore | city | Maryland | United States | 39.27 | -76.61 | 3 | |
| South Beechwood | city | Maryland | United States | 38.74 | -76.06 | 13 | |
| South Bel Air | city | Maryland | United States | 39.53 | -76.34 | 278 | |
| South Carroll Estates | city | Maryland | United States | 39.41 | -77.03 | 830 | |
| South Covell | city | Maryland | United States | 39.33 | -77.39 | 830 | |
| South Creek View | city | Maryland | United States | 38.83 | -76.53 | 3 | |
| South Cumberland | city | Maryland | United States | 39.63 | -78.76 | 830 | |
| South Down Shores | city | Maryland | United States | 38.94 | -76.57 | 6 | |
| South Gate | city | Maryland | United States | 39.13 | -76.63 | 98 | |
| South Glen | city | Maryland | United States | 39.38 | -77.23 | 830 | |
| South Hampton | city | Maryland | United States | 38.68 | -76.66 | 68 | |
| South Hampton Village | city | Maryland | United States | 38.63 | -77.08 | 147 | |
| South Haven | city | Maryland | United States | 38.96 | -76.58 | 9 | |
| South Kensington | city | Maryland | United States | 39.02 | -77.08 | 242 | |
| South Laurel | city | Maryland | United States | 39.07 | -76.85 | 193 | |
| South Lawn | city | Maryland | United States | 38.79 | -76.99 | 131 | |
| South Ocean Pines | city | Maryland | United States | 38.38 | -75.15 | 6 | |
| South Pennsfield | city | Maryland | United States | 38.76 | -76.07 | 6 | |
| South Piscataway | city | Maryland | United States | 38.69 | -76.98 | 170 | |
| South River | city | Maryland | United States | 38.90 | -76.56 | 55 | |
| South River Estates | city | Maryland | United States | 38.90 | -76.57 | 91 | |
| South River Heights | city | Maryland | United States | 38.95 | -76.57 | 9 | |
| South River Manor | city | Maryland | United States | 38.97 | -76.58 | 49 | |
| South River Spring Lakes | city | Maryland | United States | 38.96 | -76.62 | 49 | |
| South River Towers | city | Maryland | United States | 38.97 | -76.59 | 91 | |
| South Timber | city | Maryland | United States | 39.44 | -77.17 | 830 | |
| South Woodside Park | city | Maryland | United States | 39.01 | -77.02 | 249 | |
| Southampton | city | Maryland | United States | 38.25 | -76.43 | 98 | |
| Southampton | city | Maryland | United States | 39.55 | -76.33 | 295 | |
| Southdown Estates | city | Maryland | United States | 38.94 | -76.57 | 16 | |
| Southeast Landing | city | Maryland | United States | 39.16 | -76.03 | 19 | |
| Southern Pines | city | Maryland | United States | 38.30 | -75.49 | 42 | |
| Southfield at Whitemarsh | city | Maryland | United States | 39.38 | -76.47 | 150 | |
| Southgate | city | Maryland | United States | 38.26 | -76.42 | 49 | |
| Southgate | city | Maryland | United States | 39.13 | -76.61 | 88 | |
| Southglenn Farms | city | Maryland | United States | 39.52 | -76.86 | 830 | |
| Southland Hills | city | Maryland | United States | 39.40 | -76.61 | 400 | |
| Southside Trailer Park | city | Maryland | United States | 38.63 | -75.85 | 19 | |
| Southview | city | Maryland | United States | 39.29 | -76.84 | 830 | |
| Southview | city | Maryland | United States | 39.27 | -77.20 | 830 | |
| Southwind | city | Maryland | United States | 38.92 | -76.30 | 3 | |
| Southwood | city | Maryland | United States | 39.55 | -76.86 | 830 |