Postal codes in Karuizawa-machi, Kitasaku-gun, Nagano
長野県北佐久郡軽井沢町 — 10 postal codes. General code: 389-0100. Local government code 20321.
Address example
1-2-3 Oiwake, Karuizawa-machi, Kitasaku-gun, Nagano 389-0115, Japan
〒389-0115 長野県北佐久郡軽井沢町追分1-2-3
Replace 1-2-3 with the chome-ban-go (block and lot) number, and add the building and room number before it.
| Postal code | Town / English address |
|---|---|
| 389-0100 | (any other address in this municipality) （下に掲載がない場合） Karuizawa-machi, Kitasaku-gun, Nagano 389-0100, Japan |
| 389-0115 | Oiwake 追分 Oiwake, Karuizawa-machi, Kitasaku-gun, Nagano 389-0115, Japan |
| 389-0102 | Karuizawa 軽井沢 大字 Karuizawa, Karuizawa-machi, Kitasaku-gun, Nagano 389-0102, Japan |
| 389-0103 | Karuizawa 軽井沢 その他 Karuizawa, Karuizawa-machi, Kitasaku-gun, Nagano 389-0103, Japan |
| 389-0104 | Karuizawahigashi 軽井沢東 Karuizawahigashi, Karuizawa-machi, Kitasaku-gun, Nagano 389-0104, Japan |
| 389-0101 | Togemachi 峠町 Togemachi, Karuizawa-machi, Kitasaku-gun, Nagano 389-0101, Japan |
| 389-0112 | Nakakaruizawa 中軽井沢 Nakakaruizawa, Karuizawa-machi, Kitasaku-gun, Nagano 389-0112, Japan |
| 389-0111 | Nagakura 長倉 Nagakura, Karuizawa-machi, Kitasaku-gun, Nagano 389-0111, Japan |
| 389-0113 | Hotchi 発地 Hotchi, Karuizawa-machi, Kitasaku-gun, Nagano 389-0113, Japan |
| 389-0114 | Mozawa 茂沢 Mozawa, Karuizawa-machi, Kitasaku-gun, Nagano 389-0114, Japan |
Source: Japan Post postal code data (UTF-8 edition, updated Aug 31, 2026) and romanized edition (KEN_ALL_ROME, June 2025). Japan Post does not claim copyright on postal code data and allows free redistribution. Romaji follows Japan Post (long vowels are not marked). * = romanized by this site from the kana reading because the town is not yet in the romanized edition.