| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Akebonocho (立川市) | 190-0012 |
| Postal/ZIP Codes in Fujimicho (立川市) | 190-0013 |
| Postal/ZIP Codes in Hagoromocho (立川市) | 190-0021 |
| Postal/ZIP Codes in Ichibancho (立川市) | 190-0033 |
| Postal/ZIP Codes in Izumicho (立川市) | 190-0015 |
| Postal/ZIP Codes in Kamisunacho (立川市) | 190-0032 |
| Postal/ZIP Codes in Kashiwacho (立川市) | 190-0004 |
| Postal/ZIP Codes in Midoricho (立川市) | 190-0014 |
| Postal/ZIP Codes in Nishikicho (立川市) | 190-0022 |
| Postal/ZIP Codes in Nishisunacho (立川市) | 190-0034 |
| Postal/ZIP Codes in Others (立川市) | 190-0000 |
| Postal/ZIP Codes in Saiwaicho (立川市) | 190-0002 |
| Postal/ZIP Codes in Sakaecho (立川市) | 190-0003 |
| Postal/ZIP Codes in Shibasakicho (立川市) | 190-0023 |
| Postal/ZIP Codes in Sunagawacho (立川市) | 190-0031 |
| Postal/ZIP Codes in Takamatsucho (立川市) | 190-0011 |
| Postal/ZIP Codes in Wakabacho (立川市) | 190-0001 |