Prefecture · Japan
Browse all 0 municipalities in Gumma Ken. Find postal codes and location information.
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Postal prefix
0
Municipalities
Postal code format varies by country (often 4–6 digits; some use alphanumeric).
No municipalities in this area yet.
Prefecture · Japan
Browse all 0 municipalities in Gumma Ken. Find postal codes and location information.
—
Postal prefix
0
Municipalities
Postal code format varies by country (often 4–6 digits; some use alphanumeric).
No municipalities in this area yet.