How to write OYAMA Iwakuni-shi Yamaguchi in Japanese characters

How to write OYAMA Iwakuni-shi Yamaguchi in Japanese characters. The data come from Japan Post.

zipcode and address

OYAMA（Inseart numbers and so on before the address）
Iwakuni-shi, Yamaguchi
740-0323 Japan

Japanese Kanji

You can click/tap to copy Japanese Expression partially.
山口県岩国市大山
7400323

Japanese Hiragana

やまぐちけんいわくにしおおやま

Japanese Katakana

ヤマグチケンイワクニシオオヤマ

Map