Japan Post operates the postal service in Japan. You can buy postcards and stamps at convenience stores as well as post offices. It costs 63 yen to send a postcard within Japan. A regular letter costs 84 yen.
Hakodate Chuo Post Office
Open
9:00am to 7:00pm on weekdays, 9:00am to 5:00pm on Sat/Sun
Address
1-6 Shinkawa-cho, Hakodate
Access
3 minutes on foot from "Shinkawa-cho" tram stop
Phone
0138-22-9125
Hakodate Higashi Post Office
Open
9:00am to 7:00pm on Weekdays
Address
2-9-1 Yunokawa-cho, Hakodate
Access
3 minutes on foot from "Yunokawa-onsen" tram stop
Phone
0138-59-4238
Hakodate Ekimae Post Office
Open
9:00am to 5:00pm on Weekdays
Address
7-18 Wakamatsu-cho, Hakodate
Access
5 minutes on foot from Hakodate Station
Phone
0138-22-9909
Hakodate Motomachi Post Office
Open
9:00am to 5:00pm on Weekdays
Address
28-13 Motomachi, Hakodate
Access
4 minutes on foot from "Jujigai" tram stop
Phone
0138-22-9904
Hakodate Honcho Post Office
Open
9:00am to 5:00pm on Weekdays
Address
9-2 Hon-cho, Hakodate
Access
3 minutes on foot from "Goryokaku-koen-mae" tram stop
Phone
0138-53-4706
To call from abroad to Hakodate
Dial the international dialing access code and Japan’s country code (81).
See Here
Drop the first 0 and dial everything else. For example, to call the Japanese number 0138-00-0000 from the US, dial 011-81-138-00-0000.