| Locality | Post Code |
|---|---|
| Amboy, Jasper | 50208 |
| Baxter, Jasper | 50028 |
| Colfax, Jasper | 50054 |
| Collins, Jasper | 50055 |
| Galesburg, Jasper | 50232 |
| Gilman, Jasper | 50106 |
| Goddard, Jasper | 50054 |
| Green Castle, Jasper | 50054 |
| Grinnell, Jasper | 50112 |
| Ira, Jasper | 50127 |
| Kellogg, Jasper | 50135 |
| Killduff, Jasper | 50137 |
| Lambs Grove, Jasper | 50208 |
| Laurel, Jasper | 50141 |
| Lynnville, Jasper | 50153 |
| Mingo, Jasper | 50168 |
| Mitchellville, Jasper | 50169 |
| Monroe, Jasper | 50170 |
| Newton, Jasper | 50208 |
| Prairie City, Jasper | 50228 |
| Reasnor, Jasper | 50232 |
| Rhodes, Jasper | 50234 |
| Sully, Jasper | 50251 |
| Valeria, Jasper | 50054 |