| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Hakusan (文京区) | 112-0001, 113-0001 |
| Postal/ZIP Codes in Hongo (文京区) | 113-0033 |
| Postal/ZIP Codes in Honkomagome (文京区) | 113-0021 |
| Postal/ZIP Codes in Kasuga (文京区) | 112-0003 |
| Postal/ZIP Codes in Kohinata (文京区) | 112-0006 |
| Postal/ZIP Codes in Koishikawa (文京区) | 112-0002 |
| Postal/ZIP Codes in Koraku (文京区) | 112-0004 |
| Postal/ZIP Codes in Mejirodai (文京区) | 112-0015 |
| Postal/ZIP Codes in Mukogaoka (文京区) | 113-0023 |
| Postal/ZIP Codes in Nezu (文京区) | 113-0031 |
| Postal/ZIP Codes in Nishikata (文京区) | 113-0024 |
| Postal/ZIP Codes in Others (文京区) | 112-0000 |
| Postal/ZIP Codes in Otowa (文京区) | 112-0013 |
| Postal/ZIP Codes in Otsuka (文京区) | 112-0012 |
| Postal/ZIP Codes in Sekiguchi (文京区) | 112-0014 |
| Postal/ZIP Codes in Sendagi (文京区) | 113-0022 |
| Postal/ZIP Codes in Sengoku (文京区) | 112-0011 |
| Postal/ZIP Codes in Suido (文京区) | 112-0005 |
| Postal/ZIP Codes in Yayoi (文京区) | 113-0032 |
| Postal/ZIP Codes in Yushima (文京区) | 113-0034 |