Postal codes in Koshigaya-shi, Saitama
埼玉県越谷市 — 80 postal codes. General code: 343-0000. Local government code 11222.
Address example
1-2-3 Akayamacho, Koshigaya-shi, Saitama 343-0807, Japan
〒343-0807 埼玉県越谷市赤山町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 |
|---|---|
| 343-0000 | (any other address in this municipality) （下に掲載がない場合） Koshigaya-shi, Saitama 343-0000, Japan |
| 343-0807 | Akayamacho 赤山町 Akayamacho, Koshigaya-shi, Saitama 343-0807, Japan |
| 343-0808 | Akayamahoncho 赤山本町 Akayamahoncho, Koshigaya-shi, Saitama 343-0808, Japan |
| 343-0826 | Azumacho 東町 Azumacho, Koshigaya-shi, Saitama 343-0826, Japan |
| 343-0831 | Ihara 伊原 Ihara, Koshigaya-shi, Saitama 343-0831, Japan |
| 343-0025 | Osawa 大沢 Osawa, Koshigaya-shi, Saitama 343-0025, Japan |
| 343-0031 | Ozato 大里 Ozato, Koshigaya-shi, Saitama 343-0031, Japan |
| 343-0005 | Osugi 大杉 Osugi, Koshigaya-shi, Saitama 343-0005, Japan |
| 343-0034 | Otake 大竹 Otake, Koshigaya-shi, Saitama 343-0034, Japan |
| 343-0044 | Odomari 大泊 Odomari, Koshigaya-shi, Saitama 343-0044, Japan |
| 343-0021 | Obayashi 大林 Obayashi, Koshigaya-shi, Saitama 343-0021, Japan |
| 343-0027 | Ofusa 大房 Ofusa, Koshigaya-shi, Saitama 343-0027, Japan |
| 343-0004 | Omatsu 大松 Omatsu, Koshigaya-shi, Saitama 343-0004, Japan |
| 343-0844 | Omanocho 大間野町 Omanocho, Koshigaya-shi, Saitama 343-0844, Japan |
| 343-0035 | Omichi 大道 Omichi, Koshigaya-shi, Saitama 343-0035, Japan |
| 343-0008 | Oyoshi 大吉 Oyoshi, Koshigaya-shi, Saitama 343-0008, Japan |
| 343-0802 | Osogawa 小曽川 Osogawa, Koshigaya-shi, Saitama 343-0802, Japan |
| 343-0033 | Omma 恩間 Omma, Koshigaya-shi, Saitama 343-0033, Japan |
| 343-0037 | Ommashinden 恩間新田 Ommashinden, Koshigaya-shi, Saitama 343-0037, Japan |
| 343-0043 | Kamimakuri 上間久里 Kamimakuri, Koshigaya-shi, Saitama 343-0043, Japan |
| 343-0838 | Gamo 蒲生 Gamo, Koshigaya-shi, Saitama 343-0838, Japan |
| 343-0843 | Gamo Akanecho 蒲生茜町 Gamo Akanecho, Koshigaya-shi, Saitama 343-0843, Japan |
| 343-0842 | Gamo Asahicho 蒲生旭町 Gamo Asahicho, Koshigaya-shi, Saitama 343-0842, Japan |
| 343-0834 | Gamo Atagocho 蒲生愛宕町 Gamo Atagocho, Koshigaya-shi, Saitama 343-0834, Japan |
| 343-0836 | Gamo Kotobukicho 蒲生寿町 Gamo Kotobukicho, Koshigaya-shi, Saitama 343-0836, Japan |
| 343-0841 | Gamo Higashicho 蒲生東町 Gamo Higashicho, Koshigaya-shi, Saitama 343-0841, Japan |
| 343-0835 | Gamo Nishimachi 蒲生西町 Gamo Nishimachi, Koshigaya-shi, Saitama 343-0835, Japan |
| 343-0833 | Gamo Minamicho 蒲生南町 Gamo Minamicho, Koshigaya-shi, Saitama 343-0833, Japan |
| 343-0837 | Gamo Honcho 蒲生本町 Gamo Honcho, Koshigaya-shi, Saitama 343-0837, Japan |
| 343-0827 | Kawayanagicho 川柳町 Kawayanagicho, Koshigaya-shi, Saitama 343-0827, Japan |
| 343-0821 | Kawarazone 瓦曽根 Kawarazone, Koshigaya-shi, Saitama 343-0821, Japan |
| 343-0854 | Kitaushiroya 北後谷 Kitaushiroya, Koshigaya-shi, Saitama 343-0854, Japan |
| 343-0006 | Kitakawasaki 北川崎 Kitakawasaki, Koshigaya-shi, Saitama 343-0006, Japan |
| 343-0026 | Kitakoshigaya 北越谷 Kitakoshigaya, Koshigaya-shi, Saitama 343-0026, Japan |
| 343-0024 | Koshigaya 越ケ谷 番地 Koshigaya, Koshigaya-shi, Saitama 343-0024, Japan |
| 343-0813 | Koshigaya 越ケ谷 丁目 Koshigaya, Koshigaya-shi, Saitama 343-0813, Japan |
| 343-0818 | Koshigayahoncho 越ケ谷本町 Koshigayahoncho, Koshigaya-shi, Saitama 343-0818, Japan |
| 343-0811 | Gotencho 御殿町 Gotencho, Koshigaya-shi, Saitama 343-0811, Japan |
| 343-0823 | Sagamicho 相模町 Sagamicho, Koshigaya-shi, Saitama 343-0823, Japan |
| 343-0036 | Sannomiya 三野宮 Sannomiya, Koshigaya-shi, Saitama 343-0036, Japan |
| 343-0851 | Shichizacho 七左町 Shichizacho, Koshigaya-shi, Saitama 343-0851, Japan |
| 343-0045 | Shimomakuri 下間久里 Shimomakuri, Koshigaya-shi, Saitama 343-0045, Japan |
| 343-0852 | Shinkawacho 新川町 Shinkawacho, Koshigaya-shi, Saitama 343-0852, Japan |
| 343-0857 | Shinkoshigaya 新越谷 Shinkoshigaya, Koshigaya-shi, Saitama 343-0857, Japan |
| 343-0805 | Shimmeicho 神明町 Shimmeicho, Koshigaya-shi, Saitama 343-0805, Japan |
| 343-0803 | Sunahara 砂原 Sunahara, Koshigaya-shi, Saitama 343-0803, Japan |
| 343-0042 | Sengendaihigashi 千間台東 Sengendaihigashi, Koshigaya-shi, Saitama 343-0042, Japan |
| 343-0041 | Sengendainishi 千間台西 Sengendainishi, Koshigaya-shi, Saitama 343-0041, Japan |
| 343-0825 | Taiseicho 大成町 Taiseicho, Koshigaya-shi, Saitama 343-0825, Japan |
| 343-0013 | Nakajima 中島 Nakajima, Koshigaya-shi, Saitama 343-0013, Japan |
| 343-0817 | Nakamachi 中町 Nakamachi, Koshigaya-shi, Saitama 343-0817, Japan |
| 343-0853 | Nagashima 長島 Nagashima, Koshigaya-shi, Saitama 343-0853, Japan |
| 343-0855 | Nishiarai 西新井 Nishiarai, Koshigaya-shi, Saitama 343-0855, Japan |
| 343-0822 | Nishikata 西方 Nishikata, Koshigaya-shi, Saitama 343-0822, Japan |
| 343-0801 | Nojima 野島 Nojima, Koshigaya-shi, Saitama 343-0801, Japan |
| 343-0846 | Noboritocho 登戸町 Noboritocho, Koshigaya-shi, Saitama 343-0846, Japan |
| 343-0015 | Hanata 花田 Hanata, Koshigaya-shi, Saitama 343-0015, Japan |
| 343-0022 | Higashiosawa 東大沢 Higashiosawa, Koshigaya-shi, Saitama 343-0022, Japan |
| 343-0023 | Higashikoshigaya 東越谷 Higashikoshigaya, Koshigaya-shi, Saitama 343-0023, Japan |
| 343-0814 | Higashiyanagidacho 東柳田町 Higashiyanagidacho, Koshigaya-shi, Saitama 343-0814, Japan |
| 343-0002 | Hirakata 平方 Hirakata, Koshigaya-shi, Saitama 343-0002, Japan |
| 343-0001 | Hirakataminamicho 平方南町 Hirakataminamicho, Koshigaya-shi, Saitama 343-0001, Japan |
| 343-0032 | Fukuroyama 袋山 Fukuroyama, Koshigaya-shi, Saitama 343-0032, Japan |
| 343-0003 | Funato 船渡 Funato, Koshigaya-shi, Saitama 343-0003, Japan |
| 343-0011 | Mashibayashi 増林 Mashibayashi, Koshigaya-shi, Saitama 343-0011, Japan |
| 343-0012 | Mashimori 増森 Mashimori, Koshigaya-shi, Saitama 343-0012, Japan |
| 343-0804 | Minamiogishima 南荻島 Minamiogishima, Koshigaya-shi, Saitama 343-0804, Japan |
| 343-0845 | Minamikoshigaya 南越谷 Minamikoshigaya, Koshigaya-shi, Saitama 343-0845, Japan |
| 343-0832 | Minamicho 南町 Minamicho, Koshigaya-shi, Saitama 343-0832, Japan |
| 343-0014 | Miyamae 宮前 Miyamae, Koshigaya-shi, Saitama 343-0014, Japan |
| 343-0806 | Miyamotocho 宮本町 Miyamotocho, Koshigaya-shi, Saitama 343-0806, Japan |
| 343-0007 | Mukobatake 向畑 Mukobatake, Koshigaya-shi, Saitama 343-0007, Japan |
| 343-0815 | Motoyanagidacho 元柳田町 Motoyanagidacho, Koshigaya-shi, Saitama 343-0815, Japan |
| 343-0046 | Yasakacho 弥栄町 Yasakacho, Koshigaya-shi, Saitama 343-0046, Japan |
| 343-0047 | Yajuro 弥十郎 Yajuro, Koshigaya-shi, Saitama 343-0047, Japan |
| 343-0856 | Yanakacho 谷中町 Yanakacho, Koshigaya-shi, Saitama 343-0856, Japan |
| 343-0812 | Yanagicho 柳町 Yanagicho, Koshigaya-shi, Saitama 343-0812, Japan |
| 343-0816 | Yayoicho 弥生町 Yayoicho, Koshigaya-shi, Saitama 343-0816, Japan |
| 343-0824 | Ryutsudanchi 流通団地 Ryutsudanchi, Koshigaya-shi, Saitama 343-0824, Japan |
| 343-0828 | Reikutaun レイクタウン Reikutaun, Koshigaya-shi, Saitama 343-0828, 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.