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| Place | Code | Country | Admin1 | Admin2 | Admin3 | |
|---|---|---|---|---|---|---|
| 1 | Abell | 20606 | United States | Maryland | St. Mary's | |
| 38.247/-76.748 | ||||||
| 2 | Avenue | 20609 | United States | Maryland | St. Mary's | |
| 38.283/-76.747 | ||||||
| 3 | Bushwood | 20618 | United States | Maryland | St. Mary's | |
| 38.284/-76.793 | ||||||
| 4 | California | 20619 | United States | Maryland | St. Mary's | |
| 38.301/-76.531 | ||||||
| 5 | Callaway | 20620 | United States | Maryland | St. Mary's | |
| 38.228/-76.521 | ||||||
| 6 | Chaptico | 20621 | United States | Maryland | St. Mary's | |
| 38.351/-76.783 | ||||||
| 7 | Charlotte Hall | 20622 | United States | Maryland | St. Mary's | |
| 38.475/-76.804 | ||||||
| 8 | Clements | 20624 | United States | Maryland | St. Mary's | |
| 38.341/-76.726 | ||||||
| 9 | Coltons Point | 20626 | United States | Maryland | St. Mary's | |
| 38.237/-76.765 | ||||||
| 10 | Compton | 20627 | United States | Maryland | St. Mary's | |
| 38.277/-76.704 | ||||||
| 11 | Dameron | 20628 | United States | Maryland | St. Mary's | |
| 38.153/-76.357 | ||||||
| 12 | Drayden | 20630 | United States | Maryland | St. Mary's | |
| 38.172/-76.473 | ||||||
| 13 | Great Mills | 20634 | United States | Maryland | St. Mary's | |
| 38.267/-76.495 | ||||||
| 14 | Helen | 20635 | United States | Maryland | St. Mary's | |
| 38.312/-76.608 | ||||||
| 15 | Hollywood | 20636 | United States | Maryland | St. Mary's | |
| 38.352/-76.563 | ||||||
| 16 | Leonardtown | 20650 | United States | Maryland | St. Mary's | |
| 38.277/-76.638 | ||||||
| 17 | Lexington Park | 20653 | United States | Maryland | St. Mary's | |
| 38.249/-76.453 | ||||||
| 18 | Loveville | 20656 | United States | Maryland | St. Mary's | |
| 38.359/-76.683 | ||||||
| 19 | Mechanicsville | 20659 | United States | Maryland | St. Mary's | |
| 38.429/-76.725 | ||||||
| 20 | Morganza | 20660 | United States | Maryland | St. Mary's | |
| 38.364/-76.694 | ||||||
| 21 | Park Hall | 20667 | United States | Maryland | St. Mary's | |
| 38.217/-76.433 | ||||||
| 22 | Patuxent River | 20670 | United States | Maryland | St. Mary's | |
| 38.279/-76.438 | ||||||
| 23 | Piney Point | 20674 | United States | Maryland | St. Mary's | |
| 38.14/-76.505 | ||||||
| 24 | Ridge | 20680 | United States | Maryland | St. Mary's | |
| 38.117/-76.371 | ||||||
| 25 | Saint Marys City | 20686 | United States | Maryland | St. Mary's | |
| 38.189/-76.421 | ||||||
| 26 | Scotland | 20687 | United States | Maryland | St. Mary's | |
| 38.083/-76.348 | ||||||
| 27 | Tall Timbers | 20690 | United States | Maryland | St. Mary's | |
| 38.165/-76.54 | ||||||
| 28 | Valley Lee | 20692 | United States | Maryland | St. Mary's | |
| 38.19/-76.509 | ||||||
| 29 | Saint Inigoes | 20684 | United States | Maryland | St. Mary's | |
| 38.144/-76.408 | ||||||