| Business | Phone |
| Natural Resources Conservation 22660 Court Square Bldg, Leonardtown 20650 | (301) 934-9588 |
| St Mary's Soil Conservation 22660 Washington St, Leonardtown 20650 | (301) 475-5856 |
| Us Consolidated Farm Svc Agcy Po Box 268, Leonardtown 20650 | (301) 475-8431 |
| Us Consolidated Farm Svc Agcy Washington St, Leonardtown 20650 | (301) 934-1218 |
| Us Fish & Wildlife Svc Leonardtown 20650 | (301) 475-5342 |