| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Pea Hill | city | Maryland | United States | 38.31 | -75.75 | 9 | |
| Peace and Plenty | city | Maryland | United States | 39.41 | -77.25 | 830 | |
| Peaceful Valley | city | Maryland | United States | 39.70 | -76.85 | 830 | |
| Peach Blossom Farm | city | Maryland | United States | 38.62 | -76.54 | 98 | |
| Peach Blossom Heights | city | Maryland | United States | 38.73 | -76.06 | 49 | |
| Peach Brandy Village | city | Maryland | United States | 39.50 | -76.98 | 830 | |
| Peach Mill Estates | city | Maryland | United States | 39.48 | -76.97 | 830 | |
| Peach Orchard | city | Maryland | United States | 38.75 | -76.11 | 3 | |
| Peach Orchard Heights | city | Maryland | United States | 39.10 | -76.96 | 830 | |
| Peachblossom | city | Maryland | United States | 38.74 | -76.09 | 3 | |
| Peacock Corners | city | Maryland | United States | 39.26 | -75.81 | 49 | |
| Peacock Manor | city | Maryland | United States | 38.34 | -76.52 | 16 | |
| Pealiquor Landing | city | Maryland | United States | 38.86 | -75.85 | 19 | |
| Pear Tree Point | city | Maryland | United States | 39.22 | -76.02 | 3 | |
| Pearl Estates | city | Maryland | United States | 39.69 | -75.99 | 396 | |
| Pearre | city | Maryland | United States | 39.64 | -78.32 | 830 | |
| Pearson (historical) | city | Maryland | United States | 38.29 | -76.43 | 49 | |
| Pecan Acres | city | Maryland | United States | 38.37 | -75.62 | 19 | |
| Pecktonville | city | Maryland | United States | 39.67 | -78.04 | 830 | |
| Pegasus Estates | city | Maryland | United States | 39.58 | -76.26 | 252 | |
| Pembray | city | Maryland | United States | 39.54 | -75.89 | 9 | |
| Pembroke Hills | city | Maryland | United States | 38.42 | -75.50 | 62 | |
| Pembroke Knolls | city | Maryland | United States | 39.18 | -76.91 | 413 | |
| Pembrook | city | Maryland | United States | 39.49 | -76.27 | 49 | |
| Pen Delle Manor | city | Maryland | United States | 39.66 | -76.71 | 830 | |
| Pen Mar Park | city | Maryland | United States | 39.72 | -77.51 | 1669 | |
| Pendennis Mount | city | Maryland | United States | 39.00 | -76.48 | 49 | |
| Pendleton | city | Maryland | United States | 38.56 | -76.52 | 98 | |
| Penn Manor | city | Maryland | United States | 38.49 | -77.04 | 121 | |
| Pennbrook | city | Maryland | United States | 39.40 | -76.51 | 351 | |
| Pennbrooke | city | Maryland | United States | 38.86 | -76.58 | 52 | |
| Pennsfield | city | Maryland | United States | 38.76 | -76.08 | 6 | |
| Penwick Village | city | Maryland | United States | 38.72 | -76.66 | 85 | |
| Penwood Mobile Home Park | city | Maryland | United States | 39.22 | -76.44 | 3 | |
| Penwood Park (historical) | city | Maryland | United States | 39.21 | -76.46 | 0 | |
| Peppermill Village | city | Maryland | United States | 38.89 | -76.89 | 200 | |
| Peppermint Park | city | Maryland | United States | 39.53 | -76.96 | 830 | |
| Peppermint Woods Mobile Home Park | city | Maryland | United States | 39.34 | -76.41 | 3 | |
| Permenter | city | Maryland | United States | 39.37 | -77.32 | 410 | |
| Perring Village | city | Maryland | United States | 39.39 | -76.55 | 367 | |
| Perry Hall | city | Maryland | United States | 39.41 | -76.46 | 249 | |
| Perry Hall Estates | city | Maryland | United States | 39.42 | -76.47 | 249 | |
| Perry Hall Estates | city | Maryland | United States | 39.55 | -76.46 | 830 | |
| Perry Hall Manor | city | Maryland | United States | 39.43 | -76.46 | 298 | |
| Perry Hall Park | city | Maryland | United States | 39.39 | -76.47 | 147 | |
| Perry Hall Village | city | Maryland | United States | 39.40 | -76.46 | 173 | |
| Perry Point | city | Maryland | United States | 39.55 | -76.07 | 16 | |
| Perry View | city | Maryland | United States | 39.41 | -76.47 | 249 | |
| Perry Wright | city | Maryland | United States | 38.60 | -77.15 | 9 | |
| Perry's Mobile Home Park | city | Maryland | United States | 39.43 | -76.28 | 3 | |
| Perryman | city | Maryland | United States | 39.47 | -76.20 | 16 | |
| Perrys Corner | city | Maryland | United States | 38.94 | -76.19 | 3 | |
| Perrys Haven | city | Maryland | United States | 38.27 | -75.61 | 49 | |
| Perryvale | city | Maryland | United States | 39.40 | -76.46 | 147 | |
| Perryville | city | Maryland | United States | 39.56 | -76.07 | 16 | |
| Perrywood | city | Maryland | United States | 39.48 | -76.20 | 36 | |
| Perrywood Estates | city | Maryland | United States | 39.10 | -76.94 | 830 | |
| Persimmon Hills | city | Maryland | United States | 38.68 | -76.60 | 141 | |
| Peter Harmond Acres | city | Maryland | United States | 39.21 | -76.80 | 351 | |
| Peters Corners | city | Maryland | United States | 39.20 | -75.79 | 45 | |
| Petersburg | city | Maryland | United States | 38.60 | -75.86 | 36 | |
| Petersville | city | Maryland | United States | 39.35 | -77.61 | 830 | |
| Pettebone Farms | city | Maryland | United States | 39.03 | -76.42 | 3 |