| Locality | Post Code |
|---|---|
| Atwater, Merced | 95301 |
| Ballico, Merced | 95303 |
| Cressey, Merced | 95312 |
| Delhi, Merced | 95315 |
| Dos Palos, Merced | 93620 |
| El Nido, Merced | 95317 |
| Gustine, Merced | 95322 |
| Hilmar, Merced | 95324 |
| Le Grand, Merced | 95333 |
| Livingston, Merced | 95334 |
| Los Banos, Merced | 93635 |
| Merced, Merced | 95340, 95341, 95343, 95348 |
| Planada, Merced | 95365 |
| Santa Nella, Merced | 95322 |
| Santa Rita Park, Merced | 93661 |
| Snelling, Merced | 95369 |
| South Dos Palos, Merced | 93665 |
| Stevinson, Merced | 95374 |
| Winton, Merced | 95388 |