| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Guilford | city | Maryland | United States | 39.17 | -76.83 | 334 | |
| Guilford | city | Maryland | United States | 39.33 | -76.62 | 203 | |
| Guilford Downs | city | Maryland | United States | 39.23 | -76.84 | 380 | |
| Guilford Gardens | city | Maryland | United States | 39.17 | -76.83 | 347 | |
| Guilford Manor | city | Maryland | United States | 39.22 | -76.61 | 98 | |
| Guilford Square | city | Maryland | United States | 39.17 | -76.83 | 347 | |
| Gullwing Villas | city | Maryland | United States | 38.81 | -76.22 | 0 | |
| Gum Landing | city | Maryland | United States | 38.14 | -76.41 | 3 | |
| Gum Springs | city | Maryland | United States | 39.10 | -76.97 | 410 | |
| Gum Swamp | city | Maryland | United States | 38.36 | -75.83 | 9 | |
| Gum Swamp | city | Maryland | United States | 38.42 | -76.17 | 6 | |
| Gunpowder | city | Maryland | United States | 39.41 | -76.39 | 49 | |
| Gunpowder Acres | city | Maryland | United States | 39.70 | -76.78 | 830 | |
| Gunpowder Estates | city | Maryland | United States | 39.42 | -76.45 | 203 | |
| Gunpowder Farms | city | Maryland | United States | 39.52 | -76.44 | 351 | |
| Gunpowder Ridge | city | Maryland | United States | 39.72 | -76.82 | 830 | |
| Gunrich (historical) | city | Maryland | United States | 39.45 | -76.79 | 830 | |
| Guys | city | Maryland | United States | 38.94 | -76.17 | 3 |