| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Higashicho (小金井市) | 184-0011 |
| Postal/ZIP Codes in Honcho (小金井市) | 184-0004 |
| Postal/ZIP Codes in Kajinocho (小金井市) | 184-0002 |
| Postal/ZIP Codes in Maeharacho (小金井市) | 184-0013 |
| Postal/ZIP Codes in Midoricho (小金井市) | 184-0003 |
| Postal/ZIP Codes in Nakacho (小金井市) | 184-0012 |
| Postal/ZIP Codes in Nukuikitamachi (小金井市) | 184-0015 |
| Postal/ZIP Codes in Nukuiminamicho (小金井市) | 184-0014 |
| Postal/ZIP Codes in Others (小金井市) | 184-0000 |
| Postal/ZIP Codes in Sakuracho (小金井市) | 184-0005 |
| Postal/ZIP Codes in Sekinocho (小金井市) | 184-0001 |