Postal codes in Omachi-shi, Nagano
長野県大町市 — 8 postal codes. General code: 398-0000. Local government code 20212.
Address example
1-2-3 Omachi, Omachi-shi, Nagano 398-0002, Japan
〒398-0002 長野県大町市大町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 |
|---|---|
| 398-0000 | (any other address in this municipality) （下に掲載がない場合） Omachi-shi, Nagano 398-0000, Japan |
| 398-0002 | Omachi 大町 Omachi, Omachi-shi, Nagano 398-0002, Japan |
| 398-0001 | Taira 平 Taira, Omachi-shi, Nagano 398-0001, Japan |
| 398-0004 | Tokiwa 常盤 Tokiwa, Omachi-shi, Nagano 398-0004, Japan |
| 399-9101 | Miasa 美麻 Miasa, Omachi-shi, Nagano 399-9101, Japan |
| 399-7301 | Yasaka 八坂 Yasaka, Omachi-shi, Nagano 399-7301, Japan |
| 399-7302 | Yasakashobu 八坂菖蒲 Yasakashobu, Omachi-shi, Nagano 399-7302, Japan |
| 398-0003 | Yashiro 社 Yashiro, Omachi-shi, Nagano 398-0003, 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.