| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Nanjemoy | city | Maryland | United States | 38.45 | -77.22 | 65 | |
| Nanticoke | city | Maryland | United States | 38.27 | -75.91 | 6 | |
| Nanticoke Acres | city | Maryland | United States | 38.26 | -75.91 | 6 | |
| Nantucket | city | Maryland | United States | 38.38 | -75.16 | 6 | |
| Naples Manor | city | Maryland | United States | 39.10 | -77.03 | 344 | |
| Narnia | city | Maryland | United States | 39.52 | -77.07 | 830 | |
| Narrows | city | Maryland | United States | 38.97 | -76.24 | 0 | |
| Narrows Park | city | Maryland | United States | 39.67 | -78.80 | 1092 | |
| Nassawango Hills | city | Maryland | United States | 38.23 | -75.47 | 19 | |
| Nathaniels Retreat | city | Maryland | United States | 38.17 | -75.35 | 22 | |
| Nathans Hill | city | Maryland | United States | 39.16 | -77.20 | 830 | |
| National | city | Maryland | United States | 39.61 | -78.94 | 1988 | |
| National Mobile Home Park | city | Maryland | United States | 38.28 | -76.48 | 98 | |
| Natural Woods | city | Maryland | United States | 39.17 | -77.41 | 396 | |
| Naylor | city | Maryland | United States | 38.71 | -76.75 | 124 | |
| Naylor Mill Village Trailer Park | city | Maryland | United States | 38.41 | -75.61 | 29 |