| Locality | Post Code |
|---|---|
| Shinanomachi (新宿区) | 160-0016 |
| Shinjuku (新宿区) | 160-0022 |
| Shinogawamachi (新宿区) | 162-0814 |
| Shiroganecho (新宿区) | 162-0816 |
| Sugacho (新宿区) | 160-0018 |
| Suidocho (新宿区) | 162-0811 |
| Sumiyoshicho (新宿区) | 162-0065 |
| Takadanobaba (新宿区) | 169-0075 |
| Tansumachi (新宿区) | 162-0833 |
| Tenjincho (新宿区) | 162-0808 |
| Tomihisacho (新宿区) | 162-0067 |
| Totsukamachi (新宿区) | 169-0071 |
| Toyama (新宿区) | 162-0052, 169-0052 |
| Tsukijimachi (新宿区) | 162-0818 |
| Tsukudocho (新宿区) | 162-0821 |
| Tsukudohachimancho (新宿区) | 162-0815 |
| Wakaba (新宿区) | 160-0011 |
| Wakamatsucho (新宿区) | 162-0056 |
| Wakamiyacho (新宿区) | 162-0827 |
| Wasedamachi (新宿区) | 162-0042 |
| Waseda Minamicho (新宿区) | 162-0043 |
| Waseda Tsurumakicho (新宿区) | 162-0041 |
| Yamabukicho (新宿区) | 162-0801 |
| Yaraicho (新宿区) | 162-0805 |
| Yochomachi (新宿区) | 162-0055 |
| Yokoteramachi (新宿区) | 162-0831 |