How to write OYAMA Koga-shi Ibaraki in Japanese characters

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

zipcode and address

OYAMA（Inseart numbers and so on before the address）
Koga-shi, Ibaraki
306-0052 Japan

Japanese Kanji

You can click/tap to copy Japanese Expression partially.
茨城県古河市大山
3060052

Japanese Hiragana

いばらきけんこがしおおやま

Japanese Katakana

イバラキケンコガシオオヤマ

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