Postal address
Koshu, Sashima Gun
The postal code of Koshu, in Sashima Gun (Ibaraki Ken, Japón), is 306-0304. Include it in your shipments and forms.
Location
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Koshu
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Frequently asked questions
What is the postal code of Koshu?
The main postal code of Koshu (Sashima Gun, Japón) is 306-0304.