| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Gibralter Acres | city | Maryland | United States | 39.30 | -77.33 | 830 | |
| Gibson | city | Maryland | United States | 39.59 | -76.32 | 351 | |
| Gibson Island | city | Maryland | United States | 39.07 | -76.42 | 0 | |
| Gibson Manor | city | Maryland | United States | 39.59 | -76.32 | 291 | |
| Gibson Meadows | city | Maryland | United States | 38.61 | -76.63 | 98 | |
| Gilbert Acres | city | Maryland | United States | 38.44 | -76.91 | 101 | |
| Gilboa | city | Maryland | United States | 39.39 | -77.12 | 830 | |
| Gill Estates | city | Maryland | United States | 39.46 | -76.91 | 830 | |
| Gillcrest | city | Maryland | United States | 39.62 | -76.66 | 830 | |
| Gillens Grove | city | Maryland | United States | 38.37 | -76.61 | 98 | |
| Gillespie Mobile Home Court | city | Maryland | United States | 38.65 | -76.88 | 196 | |
| Gillis Falls Estates | city | Maryland | United States | 39.42 | -77.08 | 830 | |
| Gilmor Homes | city | Maryland | United States | 39.31 | -76.64 | 164 | |
| Gilmore | city | Maryland | United States | 39.58 | -78.95 | 1843 | |
| Gilnock Hall | city | Maryland | United States | 38.73 | -76.09 | 3 | |
| Gilpin | city | Maryland | United States | 39.70 | -78.56 | 830 | |
| Gilpin Farms | city | Maryland | United States | 39.63 | -75.82 | 72 | |
| Gilpin Manor | city | Maryland | United States | 39.62 | -75.83 | 72 | |
| Ginger Cove | city | Maryland | United States | 38.96 | -76.56 | 3 | |
| Gingerville | city | Maryland | United States | 38.96 | -76.55 | 3 | |
| Gingerville Manor Estates | city | Maryland | United States | 38.97 | -76.55 | 49 | |
| Gingerville Woods | city | Maryland | United States | 38.97 | -76.56 | 49 | |
| Ginns Corner | city | Maryland | United States | 39.39 | -75.80 | 49 | |
| Girdletree | city | Maryland | United States | 38.09 | -75.40 | 22 | |
| Gist | city | Maryland | United States | 39.45 | -76.99 | 830 | |
| Gittings | city | Maryland | United States | 39.47 | -76.49 | 390 |