| Locality | Post Code |
|---|---|
| Atwater, Macoupin | 62572 |
| Barr, Macoupin | 62674 |
| Benld, Macoupin | 62009 |
| Brighton, Macoupin | 62012 |
| Bunker Hill, Macoupin | 62014 |
| Carlinville, Macoupin | 62626 |
| Chesterfield, Macoupin | 62630 |
| Comer, Macoupin | 62626 |
| Dorchester, Macoupin | 62033 |
| Eagarville, Macoupin | 62023 |
| East Gillespie, Macoupin | 62033 |
| Enos, Macoupin | 62626 |
| Gillespie, Macoupin | 62033 |
| Girard, Macoupin | 62640 |
| Hagaman, Macoupin | 62630 |
| Hettick, Macoupin | 62649 |
| Lake Keho, Macoupin | 62069 |
| McVey, Macoupin | 62640 |
| Medora, Macoupin | 62063 |
| Modesto, Macoupin | 62667 |
| Mount Clare, Macoupin | 62033 |
| Mount Olive, Macoupin | 62069 |
| Nilwood, Macoupin | 62672 |
| Palmyra, Macoupin | 62674 |
| Piasa, Macoupin | 62079 |
| Plainview, Macoupin | 62685 |