St. Mary's County Post Offices & Zip Codes
Zip Codes and Post Office Information for local towns in St. Mary's County.
| Zip Code | City | Location | Phone |
|---|---|---|---|
| 20606 | Abell | Abell Road | 301-769-2262 |
| 20609 | Avenue | Route 242 | 301-769-2263 |
| 20618 | Bushwood | Bushwood Road | 301-769-2264 |
| 20619 | California | 330 Macarthur Blvd | 301-863-9506 |
| 20620 | Callaway | Route 249 | 301-994-1183 |
| 20621 | Chaptico | Route 234 | 301-884-4334 |
| 20622 | Charlotte Hall | 301-884-3050 | |
| 20623 | Cheltenham | 1191 Crain Highway | 301-782-7853 |
| 20624 | Clements | Route 234 | 301-475-8192 |
| 20626 | Colton's Point | Route 242 | 301-769-3853 |
| 20627 | Compton | Bayside Road | 301-475-9354 |
| 20628 | Dameron | Route 235 | 301-872-5461 |
| 20630 | Drayden | Cherryfield Road | 301-994-0430 |
| 20634 | Great Mills | Route 5 | 301-994-2240 |
| 20635 | Helen | 301-884-5403 | |
| 20636 | Hollywood | Old Three Notch Road | 301-373-5215 |
| 20650 | Leonardtown | 103 East Park Ave | 301-475-9781 |
| 20653 | Lexington Park | 12879 FDR Blvd | 301-862-2380 |
| 20656 | Loveville | Route 5 | 301-475-5243 |
| 20659 | Mechanicsville | 7201 Waldorf Leonardtown Rd | 301-884-3013 |
| 20660 | Morganza | Routes 242 & 5 | 301-475-9858 |
| 20667 | Park Hall | Route 5 | 301-862-4033 |
| 20670 | Patuxent River | 301-342-7641 | |
| 20674 | Piney Point | Route 249 | 301-994-2521 |
| 20680 | Ridge | 13274 Point Lookout Road | 301-872-5864 |
| 20684 | St. Inigoes | 15066 Point Lookout Road | 301-872-5010 |
| 20686 | St. Mary's City | Route 5 | 301-862-2665 |
| 20687 | Scotland | 12388 Point Lookout Road | 301-872-5800 |
| 20690 | Tall Timbers | Tall Timbers Road | 301-994-2241 |
| 20692 | Valley Lee | Route 249 | 301-994-0802 |