| Place | Post Code |
|---|---|
| 東条 (Higashijo, Nagano) | 399-7502 |
| 乱橋 (Midarehashi, Nagano) | 399-7504 |
| 西条 (Nishijo, Nagano) | 399-7501 |
| 大沢新田 (Osawashinden, Nagano) | 399-7503 |
| その他 (Others, Nagano) | 399-7500 |
| 坂井 (Sakai, Nagano) | 399-7711 |
| 坂北 (Sakakita, Nagano) | 399-7601 |
| Postal Codes in Higashichikuma | |
|---|---|
| Asahi (朝日村) | |
| Chikuhoku (筑北村) | |
| Ikusaka (生坂村) | |
| Omi (麻績村) | |
| Yamagata (山形村) | |