Postal codes in Kusatsu-machi, Agatsuma-gun, Gumma
群馬県吾妻郡草津町 — 3 postal codes. General code: 377-1700. Local government code 10426.
Address example
1-2-3 Kusatsu, Kusatsu-machi, Agatsuma-gun, Gumma 377-1711, Japan
〒377-1711 群馬県吾妻郡草津町草津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 |
|---|---|
| 377-1700 | (any other address in this municipality) （下に掲載がない場合） Kusatsu-machi, Agatsuma-gun, Gumma 377-1700, Japan |
| 377-1711 | Kusatsu 草津 Kusatsu, Kusatsu-machi, Agatsuma-gun, Gumma 377-1711, Japan |
| 377-1712 | Maeguchi 前口 Maeguchi, Kusatsu-machi, Agatsuma-gun, Gumma 377-1712, 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.