Are you looking for the list of ZIP Codes for yamanashi-ken region you are on the perfect page. On this page you will see the information for the ZIP Codes list which Yamanashi Ken - Japan covers, we cover almost all the zip codes for this state.
To see the detailed information of the ZIP Code you just need to click on the relevant ZIP Code, it will show you all the information such as how many sub-region that the ZIP Code covers.