| Place | Postal Code |
|---|---|
| 発地 (Hotchi, Nagano) | 389-0113 |
| 軽井沢 (Karuizawa, Nagano) | 389-0103, 389-0102 |
| 軽井沢東 (Karuizawahigashi, Nagano) | 389-0104 |
| 茂沢 (Mozawa, Nagano) | 389-0114 |
| 長倉 (Nagakura, Nagano) | 389-0111 |
| 中軽井沢 (Nakakaruizawa, Nagano) | 389-0112 |
| 追分 (Oiwake, Nagano) | 389-0115 |
| その他 (Others, Nagano) | 389-0100 |
| 峠町 (Togemachi, Nagano) | 389-0101 |
| Postal Codes in Kitasaku | |
|---|---|
| Karuizawa (軽井沢町) | |
| Miyota (御代田町) | |
| Tateshina (立科町) | |