Hokkaido
This is a list of post offices where I visited in Hokkaido (As of 2025/1/1).
Sapporo City, Chuo Ward
| # | Name | Visited at |
| 90014 | Sapporo Minami Sanjo | 2005/11/28 |
| 90075 | Sapporo Kita Gojo Naka | 2005/11/28 |
| 90082 | Sapporo Minami Ichijo | 2005/11/28 |
| 90089 | Sapporo Minamihachijonishi | 2011/06/06 |
| 90096 | Sapporo Minami Gojo | 2005/11/28 |
| 90097 | Sapporo Kita Sanjo | 2005/11/28 |
| 90098 | Sapporo Kita Nijo | 2005/11/28 |
| 90099 | Sapporo Kita Ichijo | 2005/11/28 |
| 90110 | Sapporo Minami Yojo | 2005/11/28 |
| 90121 | Nagayama Kinen Koenmae | 2005/11/28 |
| 90160 | Sapporo Minami Ichijo Naka | 2005/11/28 |
| 90167 | Sapporo Minamihachijo | 2011/06/06 |
| 90182 | Sapporo Minamijuyojo | 2011/06/06 |
| 90200 | Sapporo Minamirokujo | 2011/06/06 |
| 90217 | Sapporo Minamijuichijo | 2011/06/06 |
| 90221 | Sapporo Minami Ichijo Higashi | 2005/11/28 |
| 90227 | Yamahana Higashitondendori | 2011/06/06 |
| 90237 | Sapporo Minamijujo | 2011/06/06 |
| 90296 | Sapporo Minaminijuichijo | 2011/06/06 |
| 90304 | Hokkaidocho Nai | 2005/11/28 |
| 90305 | Sapporo Minamikujo | 2011/06/06 |
| 90333 | Sapporo Minamijuyojonishi | 2011/06/06 |
| 90362 | Sapporo Odori | 2005/11/28 |
| 90415 | Yamahana | 2011/06/06 |
| 90497 | Sapporo Kita Nijo Naka | 2005/11/28 |
| 90499 | Sapporo Minami Nijo | 2005/11/28 |
| 90501 | Sapporo Kita Ichijo Naka | 2005/11/28 |
| 90516 | Sapporo Maruinai | 2005/11/28 |
| 90522 | Hokkaidocho Akarengamae | 2005/11/28 |
| 90530 | Sapporo Factory Nai | 2005/11/28 |
| 90538 | Sapporo Shokubutsuenmae | 2005/11/28 |
| 90565 | Sapporo Odori Koenmae | 2005/11/28 |
| 90566 | Sapporo Odori Higashi 2 | 2005/11/28 |
Sapporo City, Kita Ward
| # | Name | Visited at |
| 90114 | Sapporo Kita Shichijo | 2005/11/28 |
| 90181 | Sapporo Hokudaibyoinmae | 2011/06/06 |
| 90318 | Sapporo Kitanijusanjo | 2011/06/06 |
| 90405 | Sapporo Kitasanjuyojo | 2011/06/06 |
| 90457 | Sappro Asabu | 2011/06/06 |
| 90498 | Sapporoeki Paseo [at present]Sapporoeki Tokyu Hyakkatennai | 2005/11/28 |
| 90507 | Sapporo Godo Choshanai | 2005/11/28 |
| 90512 | Hokkaido Daigakumae | 2011/06/06 |
Sapporo City, Higashi Ward
| # | Name | Visited at |
| 90001 | Sapporo Chuo | 2005/11/28 |
| 90198 | Sapporo Kitajusanjohigashi | 2011/06/07 |
| 90219 | Sapporo Kitajunijo | 2011/06/07 |
| 90226 | Sapporo Kitakujo | 2011/06/07 |
| 90347 | Sapporo Sakaemachinishi | 2011/06/06 |
| 90373 | Sapporo Kitasanjusanjo | 2011/06/06 |
| 90392 | Sapporo Higashi | 2011/06/07 |
| 90469 | Sapporo Kitasanjuhachijo | 2011/06/07 |
| 90502 | Sapporo Kitayonjusanjo | 2011/06/07 |
Sapporo City, Shiroishi Ward
| # | Name | Visited at |
| 90368 | Shiroishi Nango | 2011/06/07 |
| 90541 | Shiroishi Nango 1 | 2011/06/07 |
| 90570 | Shiroishi Nango 18 | 2011/06/07 |
Sapporo City, Toyohira Ward
| # | Name | Visited at |
| 90320 | Misono | 2011/06/07 |
| 90325 | Sapporo Nakanoshima | 2011/06/06 |
| 90328 | Sapporo Hiragishisanjo | 2011/06/06 |
| 90337 | Toyohira Hiragishi | 2011/06/06 |
| 90343 | Tsukisamu | 2011/06/07 |
| 90377 | Sapporo Tsukisamuchuodori | 2011/06/07 |
Sapporo City, Minami Ward
| # | Name | Visited at |
| 90087 | Sapporo Minami | 2011/06/06 |
| 90346 | Makomanai Kamimachi | 2011/06/06 |
| 90357 | Sapporo Sumikawa | 2011/06/06 |
| 90379 | Makomanai Izumimachi | 2011/06/06 |
| 90533 | Sapporo Sumikawaekimae | 2011/06/06 |
Sapporo City, Atsubetsu Ward
| # | Name | Visited at |
| 90048 | Atsubetsu | 2011/06/07 |
| 90355 | Atsubetsu Hibarigaoka | 2011/06/07 |
| 90494 | Atsubetsu Genshirindori | 2011/06/07 |
| 90505 | Oyachi Higashi | 2011/06/07 |
| 90523 | Shinsapporoeki Duo | 2011/06/07 |
Hakodate City
| # | Name | Visited at |
| 94001 | Hakodate Chuo | 2015/10/13 |
| 94002 | Hakodate Mandai | 2015/10/14 |
| 94027 | Hakodate Ote | 2015/10/13 |
| 94030 | Hakodate Higashi | 2015/10/13 |
| 94037 | Hakodate Motomachi | 2015/10/13 |
| 94045 | Hakodate Asahimachi | 2015/10/13 |
| 94047 | Hakodate Ekimae | 2015/10/13 |
| 94048 | Hakodate Ohmachi | 2015/10/13 |
| 94049 | Hokaodate Horai | 2015/10/13 |
| 94051 | Hakodate Fukabori | 2015/10/13 |
| 94054 | Hakodate Koendori | 2015/10/13 |
| 94056 | Hakodate Honcho | 2015/10/13 |
| 94058 | Goryokaku Ekimae | 2015/10/14 |
| 94060 | Hakodate Chiyodai | 2015/10/13 |
| 94061 | Hakodate Kaigan | 2015/10/14 |
| 94063 | Hakodate Benten | 2015/10/13 |
| 94065 | Hakodate Horikawa | 2015/10/13 |
| 94066 | Hakodate Matsukawa | 2015/10/13 |
| 94069 | Hakodate Matsukage | 2015/10/13 |
| 94071 | Hakodate Ueno | 2015/10/13 |
| 94075 | Hakodate Kameda | 2015/10/14 |
| 94093 | Hakodate Tokito | 2015/10/13 |
| 94098 | Hakodate Kashiwagi | 2015/10/13 |
| 94102 | Hakodate Kitahama | 2015/10/14 |
| 94105 | Hakodate Hitomi | 2015/10/13 |
| 94109 | Hakodate Hinode | 2015/10/13 |
| 94110 | Yunikawa Onsen | 2015/10/13 |
| 94114 | Hakodate Hiyoshi | 2015/10/14 |
| 94115 | Hakodate Yunohama | 2015/10/13 |
| 94117 | Hakodate Kamiyukawa | 2015/10/14 |
| 94118 | Hakodate Kita | 2015/10/14 |
| 94119 | Hakodate Higashiyama | 2015/10/14 |
| 94121 | Hakodate Hondori | 2015/10/14 |
| 94126 | Hakodate Showa | 2015/10/14 |
| 94127 | Hakodate Hanazono | 2015/10/14 |
| 94130 | Hakodate Kamiyama | 2015/10/14 |
| 94707 | Tanshin (agency) | 2015/10/14 |
| 94713 | Oshima Showa (agency) | 2015/10/14 |
| 94749 | Hakodate Daigakunai (agency) | 2015/10/13 |
Chitose City
| # | Name | Visited at |
| 90525 | Shinchitose Kukonai | 2005/11/28 |