| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Prathertown | city | Maryland | United States | 39.20 | -77.20 | 830 | |
| Pratt | city | Maryland | United States | 39.69 | -78.51 | 1040 | |
| Preference Estates | city | Maryland | United States | 38.49 | -76.99 | 147 | |
| Presidential Park | city | Maryland | United States | 39.46 | -76.99 | 830 | |
| Prestige Village | city | Maryland | United States | 39.61 | -75.93 | 88 | |
| Preston | city | Maryland | United States | 38.71 | -75.91 | 39 | |
| Preston Point | city | Maryland | United States | 38.37 | -76.48 | 3 | |
| Prettyboy | city | Maryland | United States | 39.61 | -76.72 | 830 | |
| Prettyboy Garth | city | Maryland | United States | 39.60 | -76.71 | 830 | |
| Prettyboy Trails | city | Maryland | United States | 39.66 | -76.79 | 830 | |
| Prettyman Manor | city | Maryland | United States | 38.75 | -75.97 | 19 | |
| Price | city | Maryland | United States | 39.10 | -75.96 | 39 | |
| Priceville | city | Maryland | United States | 39.55 | -76.67 | 298 | |
| Priestford Hills | city | Maryland | United States | 39.57 | -76.26 | 351 | |
| Primrose Acres | city | Maryland | United States | 38.96 | -76.50 | 49 | |
| Primrose Garth | city | Maryland | United States | 39.20 | -76.06 | 3 | |
| Prince Frederick | city | Maryland | United States | 38.54 | -76.58 | 98 | |
| Princess Anne | city | Maryland | United States | 38.20 | -75.69 | 13 | |
| Principio | city | Maryland | United States | 39.65 | -76.04 | 298 | |
| Principio Furnace | city | Maryland | United States | 39.58 | -76.04 | 101 | |
| Principio Heights | city | Maryland | United States | 39.65 | -76.05 | 298 | |
| Proctors Seat | city | Maryland | United States | 39.64 | -76.03 | 357 | |
| Profit Acres | city | Maryland | United States | 39.30 | -77.51 | 301 | |
| Prospect | city | Maryland | United States | 39.69 | -76.30 | 400 | |
| Prospect Bay | city | Maryland | United States | 38.92 | -76.20 | 3 | |
| Prospect Heights | city | Maryland | United States | 39.56 | -76.31 | 347 | |
| Prospect Hills | city | Maryland | United States | 38.63 | -75.85 | 19 | |
| Prospect Hills | city | Maryland | United States | 39.36 | -76.89 | 413 | |
| Prospect View | city | Maryland | United States | 39.38 | -77.18 | 830 | |
| Providence | city | Maryland | United States | 38.77 | -75.97 | 19 | |
| Providence | city | Maryland | United States | 39.42 | -76.56 | 400 | |
| Providence | city | Maryland | United States | 39.69 | -75.88 | 249 | |
| Providence (historical) | city | Maryland | United States | 39.00 | -76.46 | 3 | |
| Providence Cove | city | Maryland | United States | 39.00 | -76.46 | 3 | |
| Providence Landing | city | Maryland | United States | 38.76 | -75.98 | 13 | |
| Provinces | city | Maryland | United States | 39.14 | -76.73 | 236 |