| Place | Post Code |
|---|---|
| 広戸 (Hiroto, Nagano) | 389-0203 |
| 豊昇 (Hosho, Nagano) | 389-0204 |
| 草越 (Kusagoe, Nagano) | 389-0202 |
| 馬瀬口 (Maseguchi, Nagano) | 389-0207 |
| 御代田 (Miyota, Nagano) | 389-0206 |
| 茂沢 (Mosawa, Nagano) | 389-0208 |
| 面替 (Omogae, Nagano) | 389-0205 |
| その他 (Others, Nagano) | 389-0200 |
| 塩野 (Shiono, Nagano) | 389-0201 |
| Postal Codes in Kitasaku | |
|---|---|
| Karuizawa (軽井沢町) | |
| Miyota (御代田町) | |
| Tateshina (立科町) | |