| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Sayamadai (狭山市) | 350-1304 |
| Postal/ZIP Codes in Shimohirose (狭山市) | 350-1322 |
| Postal/ZIP Codes in Shimokudomi (狭山市) | 350-1332 |
| Postal/ZIP Codes in Shinsayama (狭山市) | 350-1331 |
| Postal/ZIP Codes in Tsutsujino (狭山市) | 350-1326 |
| Postal/ZIP Codes in Unoki (狭山市) | 350-1323 |