| Locality | Post Code |
|---|---|
| Bazetta, Trumbull | 44410 |
| Braceville, Trumbull | 44444 |
| Bristolville, Trumbull | 44402 |
| Brookfield, Trumbull | 44403 |
| Burghill, Trumbull | 44404 |
| Champion, Trumbull | 44483 |
| Cortland, Trumbull | 44410 |
| Farmdale, Trumbull | 44417 |
| Fowler, Trumbull | 44418 |
| Girard, Trumbull | 44420 |
| Greene, Trumbull | 44450 |
| Gustavus, Trumbull | 44417 |
| Hartford, Trumbull | 44424 |
| Howland, Trumbull | 44484 |
| Hubbard, Trumbull | 44425 |
| Kinsman, Trumbull | 44428 |
| Leavittsburg, Trumbull | 44430 |
| Lockwood, Trumbull | 44450 |
| Lordstown, Trumbull | 44481 |
| Masury, Trumbull | 44438 |
| Mayburn Corners, Trumbull | 44417 |
| McDonald, Trumbull | 44437 |
| Mecca, Trumbull | 44410 |
| Mesopotamia, Trumbull | 44439 |
| Mineral Ridge, Trumbull | 44440 |
| Newton Falls, Trumbull | 44444 |