About Yamaguchi, Japan Postal Code Lookup
This is an online tool (Mashup) to search postal code of a place, address or city in Yamaguchi, Japan.
Select the name of the Place/Address/City (in Yamaguchi, Japan) from the suggested list.
This will display the postal code of the selected location from Yamaguchi, Japan on Google map.
Note that the postal code may be searched with nearby approximation.