| Locality | Post Code |
|---|---|
| Antiville, Jay | 47371 |
| Balbee, Jay | 47369 |
| Bellefountain, Jay | 47371 |
| Blaine, Jay | 47371 |
| Bluff Point, Jay | 47371 |
| Boundry, Jay | 47371 |
| Brice, Jay | 47371 |
| Bryant, Jay | 47326 |
| College Corner, Jay | 47371 |
| Collett, Jay | 47371 |
| Como, Jay | 47371 |
| Crumley Crossing, Jay | 47336 |
| Dunkirk, Jay | 47336 |
| Fiat, Jay | 47326 |
| Jay City, Jay | 47326 |
| Liber, Jay | 47371 |
| New Mount Pleasant, Jay | 47371 |
| Noble, Jay | 47371 |
| Pennville, Jay | 47369 |
| Poling, Jay | 47326 |
| Portland, Jay | 47371 |
| Powers, Jay | 47371 |
| Redkey, Jay | 47373 |
| Salamonia, Jay | 47381 |
| West Liberty, Jay | 47326 |
| Westchester, Jay | 47371 |