| Locality | Post Code |
|---|---|
| Brookfield, Linn | 64628 |
| Browning, Linn | 64630 |
| Bucklin, Linn | 64631 |
| Laclede, Linn | 64651 |
| Linneus, Linn | 64653 |
| Marceline, Linn | 64658 |
| Meadville, Linn | 64659 |
| New Boston, Linn | 63557 |
| Purdin, Linn | 64674 |
| Saint Catharine, Linn | 64628 |
| Wheeling, Linn | 64688 |
| Winigan, Linn | 63566 |