| Locality | Post Code |
|---|---|
| Bouckville, Madison | 13310 |
| Bridgeport, Madison | 13030 |
| Brookfield, Madison | 13314 |
| Canastota, Madison | 13032 |
| Caz, Madison | 13035 |
| Cazenovia, Madison | 13035 |
| Chittenango, Madison | 13037 |
| Clockville, Madison | 13043 |
| Colgate, Madison | 13346 |
| De Ruyter, Madison | 13052 |
| Earlville, Madison | 13332 |
| Eaton, Madison | 13334 |
| Erieville, Madison | 13061 |
| Fenner, Madison | 13035 |
| Georgetown, Madison | 13072 |
| Georgtown Station, Madison | 13334 |
| Geotown, Madison | 13072 |
| Hamilton, Madison | 13346 |
| Hubbardsville, Madison | 13355 |
| Kenwood, Madison | 13421 |
| Lakeport, Madison | 13037 |
| Leonardsville, Madison | 13364 |
| Lincklaen, Madison | 13052 |
| Lincoln, Madison | 13043 |
| Madison, Madison | 13402 |
| Merrillsville, Madison | 13421 |