tag:www.city.hakodate.hokkaido.jp,2023:/category/ 移住定住 | 函館市 2026-07-31T00:00:00+09:00 tag:www.city.hakodate.hokkaido.jp,2026:/docs/2026050800030/ 函館市お試し移住 2026-07-31T00:00:00+09:00 企画部　移住・人口減担当 iju@city.hakodate.hokkaido.jp