| Locality | Post Code |
|---|---|
| Andrew, Sangamon | 62707 |
| Archer, Sangamon | 62707 |
| Auburn, Sangamon | 62615 |
| Barclay, Sangamon | 62684 |
| Bates, Sangamon | 62670 |
| Berlin, Sangamon | 62670 |
| Berry, Sangamon | 62563 |
| Bissell, Sangamon | 62707 |
| Bolivia, Sangamon | 62545 |
| Bradfordton, Sangamon | 62707 |
| Breckenridge, Sangamon | 62563 |
| Buckhart, Sangamon | 62563 |
| Buffalo, Sangamon | 62515 |
| Buffalo Hart, Sangamon | 62515 |
| Cantrall, Sangamon | 62625 |
| Chatham, Sangamon | 62629 |
| Cimic, Sangamon | 62530 |
| Clear Lake, Sangamon | 62707 |
| Curran, Sangamon | 62670 |
| Dawson, Sangamon | 62520 |
| Devereux Heights, Sangamon | 62707 |
| Divernon, Sangamon | 62530 |
| Farmingdale, Sangamon | 62677 |
| Glenarm, Sangamon | 62536 |
| Grandview, Sangamon | 62702 |
| Illiopolis, Sangamon | 62539 |