| Localité | Code postal |
|---|---|
| Jerome, Sangamon | 62704 |
| Lanesville, Sangamon | 62515 |
| Leland Grove, Sangamon | 62704 |
| Loami, Sangamon | 62661 |
| Lowder, Sangamon | 62662 |
| Mechanicsburg, Sangamon | 62545 |
| New Berlin, Sangamon | 62670 |
| New City, Sangamon | 62563 |
| Old Berlin, Sangamon | 62670 |
| Pawnee, Sangamon | 62558 |
| Pleasant Plains, Sangamon | 62677 |
| Richland, Sangamon | 62677 |
| Riddle Hill, Sangamon | 62707 |
| Riverton, Sangamon | 62561 |
| Roby, Sangamon | 62545 |
| Rochester, Sangamon | 62563 |
| Salisbury, Sangamon | 62677 |
| Sherman, Sangamon | 62684 |
| Sicily, Sangamon | 62558 |
| Southern View, Sangamon | 62703 |
| Spaulding, Sangamon | 62561 |
| Springfield, Sangamon | 62701, 62702, 62703, 62704, 62706, … |
| Thayer, Sangamon | 62689 |
| Williamsville, Sangamon | 62693 |