Postal codes in Naganohara-machi, Agatsuma-gun, Gumma
群馬県吾妻郡長野原町 — 13 postal codes. General code: 377-1300. Local government code 10424.
Address example
1-2-3 Okuwa, Naganohara-machi, Agatsuma-gun, Gumma 377-1310, Japan
〒377-1310 群馬県吾妻郡長野原町応桑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 |
|---|---|
| 377-1300 | (any other address in this municipality) （下に掲載がない場合） Naganohara-machi, Agatsuma-gun, Gumma 377-1300, Japan |
| 377-1310 | Okuwa 応桑 堂光原 Okuwa, Naganohara-machi, Agatsuma-gun, Gumma 377-1310, Japan |
| 377-1411 | Okuwa 応桑 その他 Okuwa, Naganohara-machi, Agatsuma-gun, Gumma 377-1411, Japan |
| 377-1308 | Otsu 大津 Otsu, Naganohara-machi, Agatsuma-gun, Gumma 377-1308, Japan |
| 377-1301 | Kawarahata 川原畑 Kawarahata, Naganohara-machi, Agatsuma-gun, Gumma 377-1301, Japan |
| 377-1302 | Kawarayu 川原湯 Kawarayu, Naganohara-machi, Agatsuma-gun, Gumma 377-1302, Japan |
| 377-1412 | Kitakaruizawa 北軽井沢 Kitakaruizawa, Naganohara-machi, Agatsuma-gun, Gumma 377-1412, Japan |
| 377-1304 | Naganohara 長野原 Naganohara, Naganohara-machi, Agatsuma-gun, Gumma 377-1304, Japan |
| 377-1307 | Haneo 羽根尾 Haneo, Naganohara-machi, Agatsuma-gun, Gumma 377-1307, Japan |
| 377-1309 | Hayashi 林 Hayashi, Naganohara-machi, Agatsuma-gun, Gumma 377-1309, Japan |
| 377-1306 | Furumori 古森 Furumori, Naganohara-machi, Agatsuma-gun, Gumma 377-1306, Japan |
| 377-1305 | Yokiya 与喜屋 Yokiya, Naganohara-machi, Agatsuma-gun, Gumma 377-1305, Japan |
| 377-1303 | Yokokabe 横壁 Yokokabe, Naganohara-machi, Agatsuma-gun, Gumma 377-1303, 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.