Postal codes in Hatoyama-machi, Hiki-gun, Saitama
埼玉県比企郡鳩山町 — 16 postal codes. General code: 350-0300. Local government code 11348.
Address example
1-2-3 Akanuma, Hatoyama-machi, Hiki-gun, Saitama 350-0321, Japan
〒350-0321 埼玉県比企郡鳩山町赤沼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 |
|---|---|
| 350-0300 | (any other address in this municipality) （下に掲載がない場合） Hatoyama-machi, Hiki-gun, Saitama 350-0300, Japan |
| 350-0321 | Akanuma 赤沼 Akanuma, Hatoyama-machi, Hiki-gun, Saitama 350-0321, Japan |
| 350-0311 | Ishizaka 石坂 Ishizaka, Hatoyama-machi, Hiki-gun, Saitama 350-0311, Japan |
| 350-0305 | Izui 泉井 Izui, Hatoyama-machi, Hiki-gun, Saitama 350-0305, Japan |
| 350-0322 | Imajuku 今宿 Imajuku, Hatoyama-machi, Hiki-gun, Saitama 350-0322, Japan |
| 350-0302 | Ohashi 大橋 Ohashi, Hatoyama-machi, Hiki-gun, Saitama 350-0302, Japan |
| 350-0301 | Okuda 奥田 Okuda, Hatoyama-machi, Hiki-gun, Saitama 350-0301, Japan |
| 350-0314 | Kaedegaoka 楓ケ丘 Kaedegaoka, Hatoyama-machi, Hiki-gun, Saitama 350-0314, Japan |
| 350-0303 | Kumai 熊井 Kumai, Hatoyama-machi, Hiki-gun, Saitama 350-0303, Japan |
| 350-0323 | Koyo 小用 Koyo, Hatoyama-machi, Hiki-gun, Saitama 350-0323, Japan |
| 350-0307 | Sue 須江 Sue, Hatoyama-machi, Hiki-gun, Saitama 350-0307, Japan |
| 350-0304 | Takanokura 高野倉 Takanokura, Hatoyama-machi, Hiki-gun, Saitama 350-0304, Japan |
| 350-0306 | Takemoto 竹本 Takemoto, Hatoyama-machi, Hiki-gun, Saitama 350-0306, Japan |
| 350-0312 | Hatogaoka 鳩ケ丘 Hatogaoka, Hatoyama-machi, Hiki-gun, Saitama 350-0312, Japan |
| 350-0313 | Matsugaoka 松ケ丘 Matsugaoka, Hatoyama-machi, Hiki-gun, Saitama 350-0313, Japan |
| 350-0324 | Mamedo 大豆戸 Mamedo, Hatoyama-machi, Hiki-gun, Saitama 350-0324, 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.